Epidemiology of over-the-counter drug use in community dwelling elderly: United States perspective

Home medication inventory method to assess over-the-counter (OTC) medication possession and use: A pilot study on the feasibility of in-person and remote modalities with older adults

BACKGROUND

There is a need for reproducible methods to measure over-the-counter (OTC) medication possession and use. This is because OTC medications are self-managed, variably monitored by healthcare professionals, and in certain populations such as older adults some OTC medications may introduce risk and cause more harm than benefit.

OBJECTIVE

(s): To develop and assess the feasibility of the Home Medication Inventory Method (HMIM), a novel method to measure possession and use of OTC medications.

METHODS

We benchmarked, adapted, and standardized prior approaches to medication inventory to develop a method capable of addressing the limitations of existing methods. We then conducted a pilot study of the HMIM among older adults. Eligible participants were aged ≥60 years, reported purchasing or considering purchasing OTC medication, and screened for normal cognition. Interviews were conducted both in person and remotely. When possible, photographs of all OTC medications were obtained with participant consent and completion times were recorded for both in-person and remote modalities.

RESULTS

In total 51 participants completed the pilot study. Home medication inventories were conducted in-person (n = 15) and remotely (n = 36). Inventories were completed in a mean (SD) of 20.2 min (12.7), and 96 % of inventories completed within 45 min. A total of 390 OTC medications were possessed by participants, for a mean (SD) of 7.6 (6.3) per participant. No differences in duration of interviews or number of medications reported were identified between in-person and remote modalities. Anticholinergic medications, a class targeted in the pilot as potentially harmful to older adults, were possessed by 31 % of participants, and 14 % of all participants reported use of such a medication within the previous 2 weeks.

CONCLUSIONS

Implementing the HMIM using in-person and remote modalities is a feasible and ostensibly reproducible method for collecting OTC medication possession and use information. Larger studies are necessary to further generalize HMIM feasibility and reliability in diverse populations.

Polypharmacy in US Medicare beneficiaries with antineutrophil cytoplasmic antibody vasculitis

BACKGROUND: Treatment requirements of antineutrophil cytoplasmic autoantibody vasculitis (AV) and high comorbidity burden among patients with AV may lead to higher potential for polypharmacy and its associated adverse outcomes, including adverse drug events, nonadherence, drug-drug interactions, and higher costs. Medication burden and risk factors associated with polypharmacy in patients with AV have not been well-characterized. OBJECTIVE: To characterize medication burden and examine prevalence of and risk factors for polypharmacy in the first year after diagnosis with AV. METHODS: We conducted a retrospective cohort study using 2015-2017 Medicare claims to identify incident cases of AV. We counted the number of unique generic products dispensed to patients in each of the 4 quarters after diagnosis and categorized medication count as high (≥10 medications), moderate (5-9 medications), or minimal or no polypharmacy (<5 medications). We used multinomial logistic regression to examine associations of predisposing, enabling, and medical need factors with having high or moderate polypharmacy. RESULTS: In 1,239 Medicare beneficiaries with AV, high or moderate polypharmacy was most common in the first quarter after diagnosis (83.7%), with 43.2% taking 5 - 9 medications and 40.5% taking at least 10. The odds of high polypharmacy were greater in all quarters for patients with eosinophilic granulomatosis with polyangiitis compared with granulomatosis with polyangiitis, ranging from 2.02 (95% CI = 1.18 - 3.46) in the third quarter to 2.96 (95% CI = 1.64-5.33) in the second quarter. Older age, diabetes, chronic kidney disease, obesity, a higher Charlson Comorbidity Index score, coverage with Medicaid/Part D low-income subsidy, and living in areas with low education or persistent poverty were risk factors for high or moderate polypharmacy. CONCLUSIONS: Medicare beneficiaries with newly diagnosed AV experienced a high medication burden, with more than 40% taking at least 10 medications and the highest rates among those with eosinophilic granulomatosis with polyangiitis. Patients with AV may benefit from medication therapy management interventions to manage complex drug regimens and reduce risks associated with polypharmacy. DISCLOSURES: Dr Derebail receives personal fees from Travere Therapeutics, Pfizer, Bayer, Forma Therapeutics, UpToDate, outside of the submitted work. The content is solely the responsibility of the authors and does not represent the official views of the National Institutes of Health or the Department of Veterans Affairs. Dr Thorpe receives royalties from SAGE Publishing for activities unrelated to the submitted work. This research is supported by internal funds from the University of North Carolina, as well as the National Institute of Allergy and Infectious Diseases of the National Institutes of Health under award number R21AI160606 (PI: C. Thorpe).

Uses and perceptions of medications among French older adults: results from the 2020 French Health Barometer survey

Background

There are few studies reporting on self-medication, perceptions or difficulties older adults have with their medications. This study aimed to describe the uses and the perceptions of medications among older adults in France and to identify patient groups based on that information.

Methods

We used data from the 2020 ‘French Health Barometer’ – a nationally-representative cross-sectional survey. We assessed polypharmacy (five or more medications), self-medication, and patient perceptions of medications. Robust Poisson regression was used to investigate socio-demographic and health-related factors associated with the outcomes. Latent class analysis was used to identify patient groups classified by the use and the perceptions of medications. Factors associated with group assignment were investigated by multinomial logistic regression. All analyses were weighted.

Results

The study sample comprised 1,623 respondents aged 70–85 years. Polypharmacy and self-medication were reported in 23.5 and 48.7% of the older population, respectively. Polypharmacy was associated with increasing age, low education, and impaired health status. Self-medication was associated with female sex and high education. Among individuals taking at least 1 medication, 8.2% reported not to understand all their medications, and 9.7% having difficulty taking medications as prescribed. Among individuals taking at least 2 medications, 23.2% thought that they took too many medications. Three patient groups were identified: ‘Non-polypharmacy, positive perceptions’ (62.5%), ‘Polypharmacy, positive perceptions’ (28.0%), and ‘Negative perceptions’ (9.5%).

Conclusions

Polypharmacy and self-medication are common in French older adults. One segment of people reported negative perceptions of their medications regardless of their polypharmacy status. This underlines the difference between the objective and perceived measures of polypharmacy.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12877-022-03289-9.

Identifying over-the-counter information to prioritize for the purpose of reducing adverse drug reactions in older adults: a national survey of pharmacists

BACKGROUND

Over-the-counter (OTC) medication use is associated with risks of adverse drug reactions (ADRs), particularly among older adults. The Drug Facts Label (DFL) is supposed to provide consumers with information that would avoid ADRs, yet research suggests that consumers frequently fail to interact with this critical information. We postulate that emphasizing critical information by placing it on the front of the package may increase its usage. Before doing so, the most critical information from the DFL needs to be identified.

OBJECTIVES

This study aimed to determine which information from the DFL is most critical in reducing ADRs at the time of purchase or use by older adults.

METHODS

A national survey of practicing pharmacists knowledgeable about OTC medication use by older adults asked participants to rank order the importance of the DFL sections to reduce ADRs in older adults. Open-ended questions focused on identifying ways of improving OTC medication labeling. Quantitative rankings were used to calculate the content validity ratio and analyzed using Wilcoxon signed rank tests. Qualitative results were categorized into themes.

RESULTS

A total of 318 responses (12% response rate) were analyzed. There was high consensus that uses and purpose, active ingredient, warnings, and directions for use were the most important sections of the DFL. Within the warning section, 2 specific warnings, "Do not use" and "Ask a doctor or pharmacist," were deemed most important. Similarly, qualitative themes focused on seeking health care provider assistance or were specific to age-related precautions.

CONCLUSIONS

Prioritizing warnings that highlight the importance of possible drug-drug and drug-disease precautions and the need to seek medical advice before taking OTC medications were deemed most critical. Moving this type of information to the front of the package may help reduce ADRs among older adults.

'Fitting in the pharmacist' - a qualitative analysis of the perceived relationship between community pharmacists and older adults with complex care needs

OBJECTIVES

To explore the current perceived relationship between older adults with varying levels of frailty and healthcare needs and community pharmacists.

METHODS

This qualitative study conducted a thematic analysis of focus groups with older adults and older adult caregivers and community pharmacist participants. Participants were recruited following a maximum variation sampling technique. Verbatim transcripts were inductively coded using NVivo to develop key findings.

KEY FINDINGS

Four major themes emerged: (i) Pharmacy Landscape, (ii) Prescription and Non-Prescription Drug Safety, (iii) Patient-Pharmacist Relationship and (iv) Recommendations for Pharmacy Practice. Themes demonstrate three key findings: (1) older adults approach drug information with a key focus on safety and cost of both prescription and non-prescription drugs, (2) there is a demonstrated opportunity, recognized by older adults and practitioners, for community pharmacists to expand their role in the care of older adults, (3) community pharmacists are able, interested and/or have already incorporated frailty assessments into their practice to better support their care of the older adult population with varying levels of frailty.

CONCLUSIONS

The results demonstrate a reason for the community pharmacist role to shift. The unique knowledge and skills of community pharmacists, coupled with their accessibility and strong patient-clinician relationship, have the potential to better support older adults with varying levels of frailty.

The use of herbal and dietary supplement among community-dwelling elderly in a suburban town of Malaysia

BACKGROUND

The use of herbal and dietary supplement (HDS) in health and disease management has gained global attention. HDS are generally accepted by the public and are associated with positive health behaviours. However, several reports have been documented with regards to their potential adverse effects and interaction with conventional medicines. Limited data is currently available on the use of HDS among elderly population in Malaysia. This present study aims to investigate the prevalence of and pattern of HDS use among a sample of community-dwelling elderly in a suburban town in Malaysia.

METHODS

A cross-sectional survey was conducted between March and May 2019 among the elderly aged ≥60 years old. The participants with the following criteria were included in the study: aged ≥60 years, residing in Puncak Alam and able to understand Malay or English language. Data were collected using a pre-validated questionnaire. All statistical analysis was conducted using IBM SPSS ver. 23.

RESULTS

Overall, 336 out of 400 elderly responded to the survey, achieving a response rate of 84%. This study observed that almost 50% of the respondents were using at least one type of HDS in the past one month of the survey. Among HDS non-users, most of them preferred to use modern medicines (62.6%, 114/182). Among the HDS users, 75.3% (116/154) were using at least one type of modern medicine (prescription or over-the-counter medicine). Multivariate analysis showed that having good to excellent perceived health (adjusted OR = 2.666, 95% CI = 1.592-4.464), having felt sick at least once in the past one month (adjusted OR = 2.500, 95% CI = 1.426-4.383), and lower body mass index (adjusted OR = 0.937, 95% CI = 0.887-0.990) were associated with HDS use. It was noted that only a small percentage of HDS users (16.2%, 25/154) had informed healthcare providers on their HDS use.

CONCLUSION

The use of HDS is common among the elderly sampled. Hence, healthcare providers should be more vigilant in seeking information of HDS use for disease management in their elderly patients. Campaigns that provide accurate information regarding the appropriate use of HDS among the elderly are pertinent to prevent misinformation of the products.

Self-reported medication in community-dwelling older adults in Germany: results from the Berlin Initiative Study

Background

Older adults have the highest drug utilization due to multimorbidity. Although the number of people over age 70 is expected to double within the next decades, population-based data on their medication patterns are scarce especially in combination with polypharmacy and potentially inappropriate medication (PIM). Our objective was to analyse the frequency of polypharmacy, pattern of prescription (PD) and over-the-counter (OTC) drug usage, and PIMs according to age and gender in a population-based cohort of very old adults in Germany.

Methods

Cross-sectional baseline data of the Berlin Initiative Study, a prospective cohort study of community-dwelling adults aged ≥70 years with a standardized interview including demographics, lifestyle variables, co-morbidities, and medication assessment were analysed. Medication data were coded using the Anatomical Therapeutic Chemical (ATC) classification. Age- and sex-standardized descriptive analysis of polypharmacy (≥5 drugs, PD and OTC vs. PD only and regular and on demand drugs vs regular only), medication frequency and distribution, including PIMs, was performed by age (</≥80) and gender.

Results

Of 2069 participants with an average age of 79.5 years, 97% (95%CI [96%;98%]) took at least one drug and on average 6.2 drugs (SD = 3.5) with about 40 to 66% fulfilling the criteria of polypharmacy depending on the definition. Regarding drug type more female participants took a combination of PD and OTC (male: 68%, 95%CI [65%;72%]); female: 78%, 95%CI [76%;80%]). Most frequently used were drugs for cardiovascular diseases (85%, 95%CI [83%;86%]). Medication frequency increased among participants aged ≥80 years, especially for cardiovascular drugs, antithrombotics, psychoanaleptics and dietary supplements. Among the top ten prescription drugs were mainly cardiovascular drugs including lipid-lowering agents (simvastatin), beta-blockers (metoprolol, bisoprolol) and ACE inhibitors (ramipril). The most common OTC drug was acetylsalicylic acid (35%; 95%CI [33%;37%])). Dose-independent PIM were identified for 15% of the participants.

Conclusions

Polypharmacy was excessive in older adults, with not only PD but also OTC drugs contributing to the high point prevalence. The medication patterns reflected the treatment of chronic diseases in this age group. There was even an increase in medication frequency between below and above 80 years especially for drugs of cardiovascular diseases, antithrombotic medication, psychoanaleptics, and dietary supplements.

Prescription medicines, over-the-counter medicines and complementary and alternative medicines use: a comparison between baby boomers and older South Australians

Objective

This study examines the difference in medication use between baby boomers (born between 1946–1965) and older people (born before 1946) to determine the proportion of people combining over-the-counter (OTC) medicines and complementary and alternative medicines (CAM) use with prescription medicine use.

Design

A clustered, multistage, systematic, random, self-weighting area sample was obtained and a face-to-face interview was conducted to examine the difference in use in prescription medicines, OTC, and CAM and factors associated with the use between baby boomers and older people.

Setting

South Australia.

Participants

Respondents aged 15 years and over participated in surveys conducted in autumn (March to May) of 2004 (n = 3015) and 2008 (n = 3,034) in which all respondents were asked to list their current medications. This study focuses on those participants whose age was in the range defined by baby boomers and older people.

Main outcome measures

Proportion in each age group taking prescription medicine, OTC medicine, and CAM were determined. Multivariable logistic regression analyses were performed to investigate the relationships between medication use and demographic variables.

Results

The results showed that older people were not only the higher users of prescriptions medicines but also OTC medicines and CAM. Gender and education were associated with the use of CAM.

Conclusions

Due to the high use of CAM and OTC, it is important for the prescriber to take a full history of medication use before prescribing to reduce potential problems associated with drug interactions.

Nonprescription Medication Use in Hospice Patients

Objective:

Patients admitted to hospice are more vulnerable to age-related physiologic changes, polypharmacy, and inappropriate medication use and monitoring. The objective of this study was to characterize the utilization of nonprescription medications in a hospice population.

Methods:

This was a retrospective study designed to characterize nonprescription or over-the-counter medication use in hospice patients. Data for this study were provided by Seasons Hospice & Palliative Care, a national hospice organization with licenses to operate in 19 states and collected from January 1 to December 31, 2016. The most frequently utilized nonprescription medications, therapeutic classes, and the frequency of patients with at least 1 claim within a therapeutic class were summarized.

Results:

The final study population included 62 639 orders representing 15 164 patients. The average age was 79.31 years with a standard deviation of 13.31 years. The average length of stay was 26.80 days with a standard deviation of 44.14 days. The top 5 most common medications were as follows: acetaminophen (25.15%), bisacodyl (21.69%), senna (8.35%), omeprazole (4.51%), and docusate (4.46%). Approximately 13 714 (29.67%) of patients were exposed to analgesics, 13 469 (29.14%) to laxatives, and 3535 (7.65%) to antacids or antigas medications.

Conclusion:

This study highlights numerous opportunities for improvement in the use of nonprescription medications among hospice patients. Reducing the use of nonprescription medications that are ineffective or produce unwanted side effects can contribute to improving the quality of care that patients receive.

Drug trends among non-institutionalized Canadians and the impact of data collection changes in the Canadian Health Measures Survey 2007 to 2015

BACKGROUND

There is a global trend of increasing use in prescription and over-the-counter (OTC) drugs. This hasn't been verified in Canada. In addition, there are changes made to the collection method of medication information after the Canadian Health Measures Survey (CHMS) cycle 2. This study aims to review the potential impact of the changes in medication data collection and the trends in medication use if data quality remains similar throughout the CHMS cycles 1 to 4. This is fundamental for the analysis of this biomonitoring database.

METHODS

The CHMS cycle 1 to 4 medication and household data were used to study the trends of medication use between 2007 and 2015. The use of prescription or OTC drugs was grouped based on the first levels of the Anatomical Therapeutic Chemical (ATC) Classification system. The total numbers of medications were asked in all cycles. However, only a maximum of 15 and 5 drugs could be respectively reported for existing and new prescription or OTC drugs in cycles 1 and 2. There were no restrictions on drug reporting after cycle 2. The trends of medication use were described as ratios, compared to cycle 1.

RESULTS

The total numbers of the types of medication ever identified decreased from 739 to 603 between cycles 1 and 4. The proportions of using any drugs were from 0.90 to 0.88 between cycles 1 and 4 (ratio = 1.08 in cycle 4, 95% CI = 0.89 to 1.26). The numbers of drugs in use were from 3.9 to 3.8 (ratio = 1.05 in cycle 4, 95% CI = 0.86 to 1.24). The proportions of prescription drug use were from 0.53 to 0.55 (ratio = 1.13 in cycle 4, 95% CI = 0.89 to 1.37), while the numbers of prescription were from 1.51 to 1.68 (ratio = 1.20 in cycle 4, 95% CI = 0.92 to 1.48). The use of diabetes and thyroid medication had trends similar to the respective disease prevalence. The use and the numbers of drugs for blood and blood forming organs significantly increased between cycles 1 and 4 (ratio = 1.56 in cycle 4, 95% CI = 1.03 to 2.10).

CONCLUSIONS

There is an increasing trend in the use of blood and blood forming agents through cycles 2 to 4 and cardiovascular drugs in cycle 3. For diabetes and thyroid medication, the proportions of medication use increase proportionally with disease prevalence. The changes in the medication information collection method may not have important impact on the reporting of the use of prescription or OTC drugs.

Prescription and Nonprescription Sleep Product Use Among Older Adults in the United States

OBJECTIVE

Older adults commonly use products that may be used to promote sleep, such as benzodiazepines and over-the-counter medications, but the current extent of use of both prescription and nonprescription products specifically for sleep in the United States is unknown.

METHODS

Respondents in this cross-sectional, nationally representative survey (the National Poll on Healthy Aging) of community-dwelling older adults aged 65-80 (n = 1,065) reported difficulty initiating sleep or early awakening ("sleep symptoms") and use of prescription medication or nonprescription aids to promote sleep ("sleep product"), including prescription sleep medication, over-the-counter (OTC) sleep aids, prescription pain medication, and herbal/natural sleep aids. Logistic regression was used to determine the association of respondent sociodemographic and clinical characteristics with the use of sleep products.

RESULTS

Sleep symptoms were endorsed by 67.7% of respondents (95% confidence interval [CI] 64.7%-70.7%). Use of a sleep product was reported by 35.4% (95% CI 32.4%-38.6%), with 21.9% (95% CI 19.4%-24.7%) using OTC sleep aids, 12.5% using herbal/natural aids (95% CI 10.6%-14.8%), 8.3% using prescription sleep medication (95% CI 6.7%-10.3%), and 5.0% using prescription pain medication (95% CI 3.8%-6.7%). Self-reported fair/poor mental health (relative to excellent/very good) was associated with increased odds of sleep product use (adjusted odds ratio 2.28, 95% CI 1.10-4.72, p = 0.03).

CONCLUSION

More than a third of older adults use medications or aids to help with sleep-most commonly OTC aids. Clinicians should routinely ask older patients about sleep-related difficulties and the use of nonprescription sleep aids.

A qualitative study to understand over-the-counter medication use and decision-making among residents of senior-living communities

INTRODUCTION

OTC medications are generally considered safe and convenient to use without requiring a prescription. However, the safety of an OTC medication and the final health outcome depends in part upon consumers' perceptions, beliefs, and their decision-making about OTC medication use. This study uses a qualitative approach to explore the knowledge, beliefs, and practices associated with OTC medication use and decision-making in adults aged 65 years and older.

METHODS

A set of focus groups (N = 10) were conducted in a sample of independently living older adult residents of senior apartment buildings (N = 80) using purposeful sampling. All focus groups were recorded, transcribed verbatim, and analyzed qualitatively.

RESULTS

Most participants considered OTC medications safe and effective to use if following the drug label instructions appropriately. Brand name products were perceived as equally or more effective compared to generic products by participants. Two approaches to OTC treatment decision-making were observed: 1) a decision to treat their symptoms by themselves (self-recommended) or 2) a decision to ask and/or follow their physician's recommendation (physician-recommended). Each of these treatment approaches may lead to the other depending on the person's financial and healthcare resources, the severity of the symptoms, experiences with the medication, and relationship with the physician. Maximum and fast relief was mentioned as the most important attribute in the final OTC purchase decision, followed by the lower cost, and easy to swallow dosage forms. Aspirin and ibuprofen were the two most frequently reported OTC medications associated with adverse effects and inappropriate use.

CONCLUSIONS

Older adults, in general, feel positive about OTC medications and are satisfied with using them. Considering the self-reported malpractices and side effects associated with OTC medications, older adults should be encouraged to make safe and responsible decisions about self-medication.

Pain severity and pharmacologic pain management among community-living older adults: the MOBILIZE Boston study

BACKGROUND

Concerns about polypharmacy and medication side effects contribute to undertreatment of geriatric pain. This study examines use and effects of pharmacologic treatment for persistent pain in older adults.

METHODS

The MOBILIZE Boston Study included 765 adults aged ≥70 years, living in the Boston area, recruited from 2005 to 2008. We studied 599 participants who reported chronic pain at baseline. Pain severity, measured using the Brief Pain Inventory (BPI) severity subscale, was grouped as very mild (BPI <2), mild (BPI 2-3.99), and moderate to severe (BPI 4-10). Medications taken in the previous 2 weeks were recorded from medication bottles in the home interview.

RESULTS

Half of participants reported using analgesic medications in the previous 2 weeks. Older adults with moderate to severe pain were more likely to use one or more analgesic medications daily than those with very mild pain (49 versus 11%, respectively). The most commonly used analgesic was acetaminophen (28%). Opioid analgesics were used daily by 5% of participants. Adjusted for health and demographic factors, pain severity was strongly associated with daily analgesic use (moderate-severe pain compared to very mild pain, adj. OR 7.19, 95% CI 4.02-12.9). Nearly one third of participants (30%) with moderate to severe pain felt they needed a stronger pain medication while 16% of this group were concerned they were using too much pain medication.

CONCLUSION

Serious gaps persist in pain management particularly for older adults with the most severe chronic pain. Greater efforts are needed to understand barriers to effective pain management and self-management in the older population.

Opinion of community pharmacists on use of nonprescription medications in Alexandria, Egypt

BACKGROUND

Many studies have reported the use of over-the counter (OTC) or nonprescription medications (medications that are available to consumers without a prescription) to be inappropriate and associated with risks to consumers. Among healthcare professionals, pharmacists have a key role in providing information and helping customers make a safe choice of nonprescription medicines.

OBJECTIVE

This study aimed to measure the attitudes and beliefs of community pharmacists toward the use of nonprescription medications by Egyptian customers.

SUBJECTS AND METHODS

A cross-sectional descriptive study was carried out among community pharmacies in Alexandria. A self-administered questionnaire was used to collect data from 335 pharmacists working in community pharmacies.

RESULTS

The use of nonprescription medicine among patients/consumers was reported by 66.9% of pharmacists to have increased in the past 4 years and 94.1% of them considered such a use to be very serious or somewhat serious. Long-term or chronic use was cited by 76.7% of pharmacists as the most common reason for the widespread inappropriate use of nonprescription medications, and 82.4% of the pharmacists considered the most common contributing factor to be lack of knowledge of patients/customers about the active ingredients in a branded product. The most common medications enquired about by patients/consumers were those for cough, cold, or sore throat, as reported by 73.5% of pharmacists, whereas 79.4% of pharmacists reported that patients asked about how to use nonprescription drugs. Sixty percent of pharmacists reported that the main reason that patients/customers did not seek consultation for nonprescription medicines was that they believed that nonprescription medicines were safe, and 52.5% reported that patients believed that taking advice on how to use it was unnecessary. To learn about nonprescription medicine, 93.7% of pharmacists turned to drug product labeling.

CONCLUSION AND RECOMMENDATIONS

Use of nonprescription drugs is a serious problem that has increased over the past few years. Long-term or chronic use of nonprescription medicine was the most common form of inappropriate use of nonprescription medications and lack of knowledge on the part of patients/customers about the active ingredient in a branded product was the most common factor contributing to its inappropriate use. Pharmacists should receive continuous professional education to increase their knowledge on and improve their practice of prescribing nonprescription medication; further, drug companies should be precise when disclosing information on OTC drug labels as the majority of pharmacists consult the drug label as a source of information about OTC.

Is prostaglandin E2 (PGE2) involved in the thermogenic response to environmental cooling in healthy humans?

Prostaglandin E2 (PGE2) is an eicosanoid derived from cyclooxygenase, an enzyme responsible for the cyclisation and oxygenation of arachidonic acid. In response to bacterial infection, PGE2 binds to EP3 receptors on a population of GABAergic neurons in the pre-optic area. Activation of the EP3 receptor decreases the intracellular cyclic adenosine monophosphate (cAMP) concentrations of these neurons, and the resulting dis-inhibition activates spinal motor outputs responsible for shivering thermogenesis, tachycardia, and brown adipose tissue activation. These involuntary responses increase core body temperature to varying degrees depending on the magnitude of infection; an immune response which is crucial for the survival of the host. However, evidence in animal and human models, primarily through the use of cyclooxygenase inhibitors (which block the production of PGE2), suggests that PGE2 may also be an important molecule for the defence of core temperature against body cooling and cold stress (in the absence of fever). In this paper, evidence within human and animal models is discussed which supports the hypothesis that the eicosanoid PGE2 has a role in maintaining human core temperature during environmental cooling. Given that over-the-counter PGE2 inhibiting drugs [i.e. Non-Steroidal Anti Inflammatory Drugs (NSAIDS)] are frequently used worldwide, it is possible that the use of such medication during environmental cooling could impair one's ability to thermoregulate. Support for such findings could have major implications in the pathology of hypothermia, thus, we suggest that future researchers investigate this specific hypothesis in vivo, using healthy human models. Suggestions for the implementation of such experiments are provided in the present work.

Effects of different types of physical activity on the cognitive functions and attention in older people: A randomized controlled study

This study aimed to evaluate the effects of different types of exercise on cognition. Eighty participants, 32 males and 48 females, aged 66.96 ± 11.73, volunteered for this study. The participants were randomly divided into the four following groups: Resistance Group (RG; n=20), involved in high intensity strength training; Cardiovascular Group (CVG; n=20), involved in high intensity cardiovascular training; Postural Group (PG; n=20) involved in low intensity training, based on postural and balance exercises; and Control Group (CG; n=20). Exercises were performed over the course of 12 weeks. All participants were tested for their cognitive functions pre- and post-intervention using the following neurocognitive tests: the Attentive Matrices Test, Raven's Progressive Matrices, Stroop Color and Word Interference Test, Trail Making Test and Drawing Copy Test. Statistical analysis showed that the CVG group improved significantly in the Attentive Matrices Test and Raven's Progressive Matrices (both p=<0.05), whereas the RG group improved in Drawing Copy Test time (p=<0.05). These results confirm that different types of exercise interventions have unique effects on cognition. Cardiovascular training is effective in improving performance attentive and analytic tasks, whereas resistance training is effective in improving praxis. Further investigation is necessary to evaluate the combination of the two exercise types in order to ascertain if their respective effects can be summated when performed together.

Appropriate prescribing in the elderly: Current perspectives

Advances in medical therapeutics have undoubtedly contributed to health gains and increases in life expectancy over the last century. However, there is growing evidence to suggest that therapeutic decisions in older patients are frequently suboptimal or potentially inappropriate and often result in negative outcomes such as adverse drug events, hospitalisation and increased healthcare resource utilisation. Several factors influence the appropriateness of medication selection in older patients including age-related changes in pharmacokinetics and pharmacodynamics, high numbers of concurrent medications, functional status and burden of co-morbid illness. With ever-increasing therapeutic options, escalating proportions of older patients worldwide, and varying degrees of prescriber education in geriatric pharmacotherapy, strategies to assist physicians in choosing appropriate pharmacotherapy for older patients may be helpful. In this paper, we describe important age-related pharmacological changes as well as the principal domains of prescribing appropriateness in older people. We highlight common examples of drug-drug and drug-disease interactions in older people. We present a clinical case in which the appropriateness of prescription medications is reviewed and corrective strategies suggested. We also discuss various approaches to optimising prescribing appropriateness in this population including the use of explicit and implicit prescribing appropriateness criteria, comprehensive geriatric assessment, clinical pharmacist review, prescriber education and computerized decision support tools.

Racial differences in anticholinergic use among community-dwelling elders

OBJECTIVE

Few studies have examined racial differences in potentially inappropriate medication use. The objective of this study was to examine racial disparities in using prescription and/or nonprescription anticholinergics, a type of potentially inappropriate medication, over time.

DESIGN

Longitudinal.

SETTING

Data from the Health, Aging, and Body Composition Study (years 1, 5, and 10).

PARTICIPANTS

Three thousand fifty-five community-dwelling older adults, both blacks and whites, at year 1.

MAIN OUTCOME MEASURE

Highly anticholinergic medication use per the 2012 American Geriatrics Society Updated Beers Criteria for Potentially Inappropriate Medication Use in Older Adults.

RESULTS

Blacks represented 41.4% of the participants at year 1. At year 1, 13.4% of blacks used an anticholinergic medication compared with 17.8% of whites, and this difference persisted over the ensuing 10-year period. Diphenhydramine was the most common anticholinergic medication reported at baseline and year 5, and meclizine at year 10, for both races. Controlling for demographics, health status, and access to care factors, blacks were 24% to 45% less likely to use any anticholinergics compared with whites over the years considered (all P < 0.05).

CONCLUSION

The use of prescription and/or nonprescription anticholinergic medications was less common in older blacks than whites over a 10-year period, and the difference was unexplained by demographics, health status, and access to care.

A critical appraisal of lubiprostone in the treatment of chronic constipation in the elderly

Chronic constipation is a common disorder in the general population, with higher prevalence in the elderly, and is associated with worse quality of life and with greater health care utilization. Lubiprostone is an intestinal type-2 chloride channel activator that increases intestinal fluid secretion, small intestinal transit, and stool passage. Lubiprostone is currently approved by the US Food and Drug Administration for the treatment of chronic idiopathic constipation and of irritable bowel syndrome with predominant constipation. This review outlines current approaches and limitations in the treatment of chronic constipation in the elderly and discusses the results, limitations, and applicability of randomized, controlled trials of lubiprostone that have been conducted in the general and elderly population, with additional focus on the use of lubiprostone in constipation in Parkinson's disease and in opioid-induced constipation, two clinical entities that can be comorbid in elderly patients.

Polypharmacy and food-drug interactions among older persons: a review

Polypharmacy is generally defined as the use of 5 or more prescription medications on a regular basis. The average number of prescribed and over-the-counter medications used by community-dwelling older adults per day in the United States is 6 medications, and the number used by institutionalized older persons is 9 medications. Almost all medications affect nutriture, either directly or indirectly, and nutriture affects drug disposition and effect. This review will highlight the issues surrounding polypharmacy, food-drug interactions, and the consequences of these interactions for the older adult.

Birth cohort differences in the use of medications in a Brazilian population of older elderly: the Bambuí Cohort Study of Aging (1997 and 2008)

This study examined differences in the use of medications in two birth cohorts (born from 1916 to 1926 and from 1927 to 1937) among older elderly in the population-based cohort study in Bambuí, Minas Gerais State, Brazil. The study used data on participants who were 71-81 years of age in the baseline survey in 1997 (n = 492) and in the 11th wave, in 2008 (n = 620). The number of medications currently consumed (mean = 4.6 and 3.4, respectively) and prevalence of polypharmacy (46.6% and 29.1%, respectively) were higher in the more recent cohort as compared to the earlier one. These differences were independent of gender, age, schooling, number of medical visits in the previous 12 months, and number of chronic conditions. The more recent cohort showed significant differences in the use of psychoactive drugs, lipid modifying agents, drugs for diabetes, and antithrombotic agents, as well as changes in drugs used for arterial hypertension. In general, these changes are consistent with those observed in elderly populations in high-income countries.

Factors Associated with Medicine Use and Non-use by Ontario Seniors

While there is growing evidence of the increasing use of medicines by the elderly, research undertaken to critically examine differences among types of medicine users in this population is limited. Using population data, we examine the influence of social, demographic, and health-related factors on likelihood of being a non-user, a user of non-prescribed medicines only, or a user of prescription medicines only. We find some evidence of the rational use of drugs (i.e., those who are in better health are more likely to be non-users or to use non-prescribed medicines than those who are in poor health) and of rational explanations for reported use (i.e., being female is associated with less likelihood of non-use or exclusive use of non-prescription medicines than being male). Further analysis of the medicine-use patterns and decisions of elderly men and of those of elderly persons who are widowed or separated/divorced is warranted.

Public Health Implications of Household Pharmaceutical Waste in the United States

Household pharmaceuticals are ubiquitous and untold quantities are wasted annually. Most often, people dispose of household pharmaceuticals by flushing them down the toilet, pouring them down the drain, or throwing them away in the trash. Pharmaceuticals disposed in this manner compromise the safety of our environment. This article provides a comprehensive review on the public health issue of household pharmaceutical waste, describing its epidemiology, explaining its effects on aquatic and human life, estimating its cost burden, and discussing strategies for reducing environmental exposure to it. In doing so, this article proposes two key objectives for our nation: (1) reduce the amount of household pharmaceuticals wasted and (2) devise environmentally friendly and cost-effective ways for handling this waste once it has been generated.

Self-medication with over-the-counter drugs and complementary medications in South Australia's elderly population

Background

A number of surveys have examined use of complementary and alternative medicines (CAM) in Australia. However, there are limited Australian data on use of CAM and over-the-counter (OTC) medicines in the elderly population. The main aims of this study were to examine self-medication practices with CAM and OTC medicines among older Australians and variables associated with their use.

Methods

The Australian Longitudinal Study of Ageing (ALSA) is an ongoing multidisciplinary prospective study of the older population which commenced in 1992 in South Australia. Data collected in 4 waves of ALSA between 1992 and 2004 were used in this study with a baseline sample of 2087 adults aged 65 years and over, living in the community or residential aged care. OTC medicines were classified according to the World Health Organization Anatomical Therapeutic Chemical (ATC) classification. CAM were classified according a modified version of the classification adopted by the Therapeutics Goods Administration (TGA) in Australia.

Results

The prevalence of CAM or OTC use ranged from 17.7% in 2000-2001 to 35.5% in 2003-2004. The top classes of CAM and OTC medicines used remained relatively constant over the study period. The most frequent classes of CAM used were vitamins and minerals, herbal medicines and nutritional supplements while the most commonly used OTC were analgesics, laxatives and low dose aspirin. Females and those of younger age were more likely to be CAM users but no variable was associated with OTC use.

Conclusion

Participants seemed to self-medicate in accordance with approved indications, suggesting they were informed consumers, actively looking after their own health. However, use of analgesics and aspirin are associated with an increased risk of adverse drug events in the elderly. Future work should examine how self-medication contributes to polypharmacy and increases the risk of adverse drug reactions.

Medications collected for disposal by outreach pharmacists in Australia

OBJECTIVE

To examine the types, quantities, and monetary value of drugs which are disposed of by patients of outreach pharmacists, and to describe the role of outreach pharmacists in promoting the safe disposal of drug waste and reducing medication cost.

SETTING

An Outreach Medication Review service at a major public hospital in Melbourne, Australia.

METHODS

Part of the service offered by outreach pharmacists in OMR at St Vincent's Hospital Melbourne is to collect the medications that have expired, or are no longer needed by patients. This audit looked at all the items collected over a period of 2 months, July and August of 2008. We recorded the types of medication groups and the number of items in each of these groups. An estimate of the value of this medicinal waste was also made.

MAIN OUTCOME MEASURE

Measurable parameters were the number of medications collected in the various therapeutic groups, and an estimate of their monetary value. This served to provide an estimate of the total value of wasted medications.

RESULTS

Medications collected fell into 11 therapeutic groups, with a total of 293 items collected. The largest number of medications belonged to the cardiovascular group. The number of patients seen was 40 patients, with each patient having an average of 7.3 items that are either expired or unnecessary. The estimated value of medicinal waste per patient is about AU$1308 annually.

CONCLUSION

Outreach pharmacists are in a good position to collect unnecessary medications, and to educate patients on the prudent use of government subsidy of medications. The economic ramification of medication disposal is significant, in terms of the cost of medications that end up not being used. Cardiovascular medications are the main group that end up being wasted, and is among the most expensive to subsidize. Further studies are needed to examine ways of minimising medication waste and reducing the cost of such wastage.

Use of prescription and over-the-counter medications and dietary supplements among older adults in the United States

CONTEXT

Despite concerns about drug safety, current information on older adults' use of prescription and over-the-counter medications and dietary supplements is limited.

OBJECTIVE

To estimate the prevalence and patterns of medication use among older adults (including concurrent use), and potential major drug-drug interactions.

DESIGN, SETTING, AND PARTICIPANTS

Three thousand five community-residing individuals, aged 57 through 85 years, were drawn from a cross-sectional, nationally representative probability sample of the United States. In-home interviews, including medication logs, were administered between June 2005 and March 2006. Medication use was defined as prescription, over-the-counter, and dietary supplements used "on a regular schedule, like every day or every week." Concurrent use was defined as the regular use of at least 2 medications.

MAIN OUTCOME MEASURE

Population estimates of the prevalence of medication use, concurrent use, and potential major drug-drug interactions, stratified by age group and gender.

RESULTS

The unweighted survey response rate was 74.8% (weighted response rate, 75.5%). Eighty-one percent (95% confidence interval [CI], 79.4%-83.5%) used at least 1 prescription medication, 42% (95% CI, 39.7%-44.8%) used at least 1 over-the-counter medication, and 49% (95% CI, 46.2%-52.7%) used a dietary supplement. Twenty-nine percent (95% CI, 26.6%-30.6%) used at least 5 prescription medications concurrently; this was highest among men (37.1%; 95% CI, 31.7%-42.4%) and women (36.0%; 95% CI, 30.2%-41.9%) aged 75 to 85 years. Among prescription medication users, concurrent use of over-the-counter medications was 46% (95% CI, 43.4%-49.1%) and concurrent use of dietary supplements was 52% (95% CI, 48.8%-55.5%). Overall, 4% of individuals were potentially at risk of having a major drug-drug interaction; half of these involved the use of nonprescription medications. These regimens were most prevalent among men in the oldest age group (10%; 95% CI, 6.4%-13.7%) and nearly half involved anticoagulants. No contraindicated concurrent drug use was identified.

CONCLUSIONS

In this sample of community-dwelling older adults, prescription and nonprescription medications were commonly used together, with nearly 1 in 25 individuals potentially at risk for a major drug-drug interaction.

Use of self-prescribed nonprescription medications and dietary supplements among assisted living facility residents

OBJECTIVE

Describe the prevalence of self-prescribed use and misuse as well as users' opinions concerning nonprescription medications and dietary supplements in assisted living facilities.

DESIGN

Descriptive cross-sectional study.

SETTING

Two assisted living facilities (ALFs) in Oregon and Washington State.

PARTICIPANTS

Convenience sample of 45 ALF residents.

INTERVENTION

Chart reviews and face-to-face interviews.

MAIN OUTCOME MEASURES

Prevalence and types of use of self-prescribed over-the-counter (OTC) medications and dietary supplements; misuse of these products, and participants' opinions concerning use of these products.

RESULTS

Among 29 women and 16 men with a mean (+/- SD) age of 84.8 +/- 6.9 years and a mean of 9.9 +/- 6.4 years of education, 84.4% were using selfprescribed OTC medications and dietary supplements at the time of this study. A mean of 3.4 products was used per participant. Nutritional supplements were most frequently used (32% of products), followed by gastrointestinal products (17%), pain relievers (16.3%), herbals (14.4%), topical products (12%), and cold/cough products (8.5%). Potential misuse was identified in 23 (51%) of the participants. Problems in the use of products included duplication (70%), potential drug/disease/food interactions (20.8%), and other inappropriate use (9.1%). The majority (76%) of the participants believed the products were helpful in maintaining health, 56% of them wanted more product information, 49% sought product information from family and friends, 40% turned to their physicians and nurses for information, and 11% asked pharmacists for advice.

CONCLUSION

The use of nonprescription medications and dietary supplements among ALF residents was high, and simultaneous use of multiple products with the same active ingredient was the most prevalent problem. The residents turned to family and friends, physicians, nurses, and ALF staff for information on these products more frequently than they did to pharmacists.

Approaches to appropriate drug prescribing for the older adult

When prescribing for the older adult, the office-based physician walks the fine line between introducing the drugs that are considered best practices for each disease that the person has and acknowledging that as the number of drugs increases, the risks of adverse drug reactions, drug-drug interactions, or drug-disease interactions increase considerably. Establishing the clinician-patient partnership to develop goals of care is the first step in the process. Avoiding drugs that are likely to be associated with adverse outcomes (the Beers Criteria list) is an important next step, as is awareness of the prescribing cascade. It is also important, however, to not be overly pessimistic. Quality of care and quality of life may be greatly enhanced by careful use of prescription and over-the-counter medications in the older adult.

Suitability of written supplemental materials available on the Internet for nonprescription medications

PURPOSE

The suitability, readability, and cultural appropriateness of written supplemental materials available on the Internet for nonprescription medications were examined.

METHODS

We videotaped 48 hours of television programming, recording a total of 152 advertisements highlighting 37 unique nonprescription medications. The supplemental materials corresponding to each advertised medication were downloaded and printed in their entirety from each product-specific Web site. These materials were assessed using the Suitability Assessment of Materials (SAM) instrument. Total SAM scores were grouped as follows: not suitable (0-39%), adequate (40-69%), and superior (70-100%). The Fry readability formula was used to determine the reading grade level for the materials assessed with the SAM instrument.

RESULTS

The mean +/- S.D. SAM score of all materials was 54.9% +/- 0.1% (range, 38-76%). Materials for the majority of drugs (86.5%, n = 32) were rated adequate. Materials for four drugs (10.8%) were rated superior, and the material for one drug was not suitable. While the total SAM scores were adequate for most of the materials evaluated, the majority of materials scored particularly poorly for their reading level (the materials for 81.1% of drugs were not suitable). The materials for 40.9% of drugs used uncommon words.

CONCLUSION

Evaluation of the suitability, readability, and cultural appropriateness of written supplemental materials for nonprescription medications available on manufacturer-sponsored Web sites and intended for consumers or patients revealed that SAM scores were adequate for most of the materials; however, many scored poorly in the areas of reading level and used uncommon words.

Drug–drug interactions in oncology: Why are they important and can they be minimized?

Adverse drug-drug interactions are a major cause of morbidity and mortality. Cancer patients are at particularly high risk of such interactions because they commonly receive multiple medications, including cytotoxic chemotherapy, hormonal agents and supportive care drugs. In addition, the majority of cancer patients are elderly, and so require medications for co-morbid conditions such as cardiovascular, gastrointestinal, and rheumatological diseases. Furthermore, the age-related decline in hepatic and renal function reduces their ability to metabolize and clear drugs and so increases the potential for toxicity. Not all drug-drug interactions can be predicted, and those that are predictable are not always avoidable. However, increased awareness of the potential for these interactions will allow healthcare providers to minimize the risk by choosing appropriate drugs and also by monitoring for signs of interaction. This review considers the basic principles of drug-drug interactions, and presents specific examples that are relevant to oncology.

Estudo de base populacional sobre o consumo de medicamentos entre idosos: Projeto Bambuí

Investigou-se a prevalência e fatores associados ao consumo de medicamentos prescritos e não prescritos entre idosos (60 anos ou mais). Participaram deste trabalho 1.606 (92,2%) dos 1.742 idosos residentes na cidade de Bambuí, Minas Gerais, Brasil. Entre os participantes, 1.281 (79,7%) e 274 (17,1%) haviam consumido medicamentos prescritos e não prescritos nos últimos noventa dias, respectivamente. O consumo de medicamentos prescritos esteve associado ao sexo feminino, idade (70-79 e > 80 anos), renda familiar (maior), estado de saúde (pior) e número de consultas médicas (maior). O uso de medicamentos não prescritos apresentou associação negativa com consulta médica e associação positiva com sexo (feminino) e consulta a um farmacêutico. Os fatores associados ao consumo de medicamentos prescritos e não prescritos verificados neste trabalho foram semelhantes aos observados em estudos conduzidos em outros países. Diferentemente deles, nosso estudo mostrou um menor consumo de medicamentos prescritos entre idosos com pior situação sócio-econômica. Nossos resultados sugerem, ainda, que a automedicação entre idosos esteja sendo utilizada em substituição à atenção formal à saúde.

Switching of Prescription Drugs to Over-the-Counter Status

Prescription medicines are increasingly being switched to over-the-counter (OTC, nonprescription) status in the developed world, with the support of government policy. These changes may provide greater choice for individuals and offer potential savings in government spending on health while expanding the market for pharmaceutical companies. However, there is concern regarding the safety of these reclassifications. Elderly people are the largest consumers of prescription and OTC medicines and are more vulnerable to drug adverse effects and the risks of multiple or inappropriate medications. Commonly purchased agents such as NSAIDs have recognised adverse effects which have been shown to be more common in the elderly. Furthermore, all sedatives, including antihistamines, have a propensity to cause falls in older people. As many doctors do not ask patients about OTC medicine use, problems related to use of these drugs may go undetected. Furthermore, the increased availability of OTCs may result in a delay in patients consulting medical practitioners for potentially serious conditions, although this has not so far been investigated. In the UK, the recent switch of a low-dose HMG-CoA reductase inhibitor (statin) to OTC status has caused concern. Although there might theoretically be some benefits from improved access to medications used in primary and secondary prevention of heart disease, the actual outcomes of use of this reduced dose of the statin will be difficult or impossible for patients or practitioners to monitor. OTC drug use implies a mutual responsibility for communication between patients and health professionals that in practice is not always achieved. Epidemiological research is needed to investigate patterns of OTC use and evaluate the potential risks of OTC medicines in elderly people. Governments, regulatory bodies, professionals and the drug industry have a responsibility to ensure that robust systems are in place if the increased use of OTC medicines by elderly people is to be safe and effective.

Is antioxidant use protective of cognitive function in the community-dwelling elderly?

BACKGROUND

The role of oxidative stress in the pathogenesis of diseases such as macular degeneration, certain types of cancer, and Alzheimer's disease has received much attention. Thus, there is considerable interest in the potential contribution of antioxidants to the prevention of these diseases.

OBJECTIVE

The objective of this study was to determine whether use of supplemental antioxidants (vitamins A, C, or E, plus selenium or zinc) was associated with a reduced risk of development of cognitive impairment or cognitive decline in a representative sample of the community-dwelling elderly.

METHODS

The sample consisted of 2082 nonproxy subjects from the Duke Established Populations for Epidemiologic Studies of the Elderly who were not cognitively impaired at the 1989-1990 interview (baseline for the present analysis). Medication use was determined during in-home interviews. Cognitive function was assessed 3 and 7 years from baseline in terms of incident cognitive impairment, as measured on the Short Portable Mental Status Questionnaire (SPMSQ) using specific cut points (number of errors) based on race and education, and cognitive decline, defined as an increase of > or = 2 errors on the SPMSQ. Multivariate analyses were performed using weighted data adjusted for sampling design and controlled for sociodemographic characteristics, health-related behaviors, and health status.

RESULTS

At baseline, 224 (10.8%) subjects were currently taking a supplement containing an antioxidant. During the follow-up period, 24.0% of subjects developed cognitive impairment and 34.5% experienced cognitive decline. Current antioxidant users had a 34.0% lower risk of developing cognitive impairment compared with non-antioxidant users (adjusted relative risk [RR], 0.66; 95% CI, 0.44-1.00) and a 29.0% lower risk of experiencing cognitive decline (adjusted RR, 0.71; 95% CI, 0.49-1.01).

CONCLUSION

The results of this analysis suggest a possible beneficial effect of antioxidant use in terms of reducing cognitive decline among the community-dwelling elderly.

Granisetron versus tropisetron for prophylaxis of acute chemotherapy-induced emesis: a pooled analysis

This analysis compares the antiemetic efficacy of the 5-HT3-receptor antagonists granisetron and tropisetron in acute chemotherapy-induced nausea and vomiting (CINV). All published randomized studies comparing granisetron with tropisetron in conventionally-dosed, emetogenic chemotherapy are included in this pooled analysis. The target criterion for antiemetic success was 'acute complete response' (complete absence of vomiting in the 24 h after the start of chemotherapy) and the rate of successful treatment reported as 'response rate' (acute complete response rate per patient). Twelve studies were used comprising 810 patients. Comparison between granisetron and tropisetron in patients receiving cisplatin-based therapy showed superiority of granisetron (odds ratio above 1.0) in six out of seven studies. However, this difference did not reach statistical significance. In patients receiving noncisplatin-based therapies, four out of five studies showed an advantage of granisetron over tropisetron with one study showing a significant advantage. Pooled analysis of all studies demonstrated a significant overall advantage for granisetron over tropisetron (p=0.042). This is supported by the individual studies: overall, ten out of the 12 studies analyzed showed an advantage for granisetron, with a 6.4% difference in response rate. This advantage was more pronounced in noncisplatin-based therapy (7.3%), whereas in cisplatin-based therapy, the difference was 5.4%. The overall results of this pooled analysis of cisplatin and noncisplatin-based studies suggest that granisetron has a marginal but clinically potentially relevant statistically significant advantage in efficacy over tropisetron for the control of acute CINV.

Issues related to monitoring the safety of over-the-counter (OTC) medicines

Pharmaceutical advances over the past 50 years have benefited many people in terms of disease prevention and management. However, probably without exception, most pharmaceutical products can cause adverse consequences of varying severity and frequency. In the last 10 years, many medicines that were originally prescription only have now become available over the counter (OTC), either from pharmacies or other general retail outlets. The volume and value of OTC medicine sales have increased accordingly. These switches have been well regulated and based on clear criteria and evidence of safety. Benefits of the changes include increased convenience to patients, greater self-management of minor ailments and a reduction in government drug expenditure.However, there are important differences between medicines supplied OTC and on medical prescription. With OTC medicines there is generally less healthcare professional input into the recommendation or ongoing monitoring of use. There is an absence of records per se, or linkage to other medication records elsewhere, and most countries allow direct-to-consumer advertising of the product. Taken together these differences can result in inappropriate expectations, demand and use of the OTC medicines, with limited opportunity for ongoing patient follow-up and monitoring of safety. Methodologies for pharmacy-based epidemiological studies of OTC medicines need to be developed. Studies should be large enough to detect associations that might exist, and to consider other explanations for associations such as chance, bias or confounding. There have already been some pilot studies with encouraging results with respect to follow-up rates. Outcome data however have usually been self-reported and the studies have lacked a suitable comparison group. Purchasers and suppliers of OTC medicines should also be made aware of, and encouraged to use, existing systems for spontaneous reporting of suspected adverse events, such as the Yellow Card Scheme in the UK. While available OTC medicines are perceived to be generally safe, problems have occasionally arisen with some earlier switched products (e.g. terfenadine). There have also been concerns about some traditional herbal and homeopathic remedies such as St John's wort. While such adverse events are rare, they emphasise the need for healthcare professionals and the public to understand and manage such risks. Many doctors are unaware of the range of OTC preparations available, and therefore do not consider them as a possible cause of presenting symptoms. Neither do they take them into account when making a new prescribing decision. The public need to be aware that OTC medicines should be treated with the same care as prescribed medicines, and that advice on recommended dose, contraindications and interactions should be adhered to.

Same Old Story? Do We Need to Modify Our Supportive Care Treatment of Elderly Cancer Patients? Focus on Antiemetics

The incidence of cancer is highest among individuals > or =65 years of age. Physiological changes associated with aging, such as cognitive decline, renal and hepatic dysfunction, can often complicate treatment options, and the elderly represent a particular challenge to the oncologist because of the high incidence of comorbidity and polypharmacy. Effective supportive care is of particular importance in elderly cancer patients as they may recover less satisfactorily if adverse events are poorly controlled. Nevertheless, evidence suggests that supportive care agents, for example, antiemetics, are underutilised in this patient population. Chemotherapy and radiotherapy regimens are frequently associated with nausea and vomiting--symptoms that can have deleterious effects on vulnerable patients if not adequately managed. The serotonin 5-HT3-receptor antagonists represent a class of antiemetics that are currently regarded as the gold standard treatment for chemotherapy- and radiotherapy-induced nausea and vomiting. They are recommended as first-line treatment for patients at moderate-to-high risk of emesis. However, antiemetic guidelines do not differentiate between these agents and, more importantly, do not contain specific recommendations for the elderly. Pharmacological differences exist between the commonly available 5-HT3-receptor antagonists (dolasetron, granisetron, ondansetron, tropisetron and palonosetron), namely receptor sensitivity, duration of action, metabolism and tolerability profile. Of particular concern with prescriptions to elderly cancer patients is the convenience of once-daily administration, the low potential for drug-drug interactions and cardiovascular adverse effect profile. Moreover, the addition of the newly approved neurokinin NK1-receptor antagonist aprepitant to the choice of antiemetic regimen may complicate therapy and exacerbate the drug-drug interaction risk in elderly patients. Therefore, the use of antiemetics that are well tolerated and with the lowest risk of drug-drug interactions is imperative in this patient population and will enable even those patients with several comorbidities and a high level of polypharmacy to receive effective antiemetic therapy.