Prescription medicine misuse in the Asia-Pacific region: An evolving issue?

Prescription drug dependence with and without concurrent illicit drug use: a multicenter cross-sectional survey among an addiction treatment seeking population

Background

Dependence on prescription drugs and illicit drugs imposes a global health and social burden. Despite accumulating evidence of prescription drugs and illicit drugs dependence, none of the systematized studies has explored the magnitude of this problem in Pakistan. The aim is to investigate the extent and associated factors of prescription drug dependence (PDD), as opposed to concomitant prescription drug dependence and illicit drug use (PIDU), within a sample of individuals seeking addiction treatment.

Methods

The cross sectional study was conducted on the sample recruited from three drug treatment centers in Pakistan. Face-to-face interviews were conducted with participants who met ICD-10 criteria for prescription drug dependence. Several aspects like substance use histories, negative health outcomes, patient attitude, pharmacy and physician practices also collected to predict the determinants of (PDD). Binomial logistic regression models examined the factors associated with PDD and PIDU.

Results

Of the 537 treatment seeking individuals interviewed at baseline, close to one third (178, 33.3%) met criteria for dependence on prescription drugs. The majority of the participants were male (93.3%), average age of 31 years, having urban residence (67.4%). Among participants who met criteria for dependence on prescription drugs (71.9%), reported benzodiazepines as the most frequently used drug, followed by narcotic analgesics (56.8%), cannabis/marijuana (45.5%), and heroin (41.5%). The patients reported alprazolam, buprenorphine, nalbuphine, and pentazocin use as alternatives to illicit drugs. PDD was significantly negatively associated with injectable route (OR = 0.281, 95% CI, 0.079-0.993) and psychotic symptoms (OR = 0.315, 95% CI, 0.100, 0.986). This implies that PDD is less likely to be associated with an injectable route and psychotic symptoms in contrast to PIDU. Pain, depression and sleep disorder were primary reasons for PDD. PDD was associated with the attitude that prescription drugs are safer than illicit drugs (OR = 4.057, 95%CI, 1.254-13.122) and PDD was associated with being on professional terms (i.e., having an established relationship) with pharmaceutical drugs retailers for acquisition of prescription drugs.

Discussion and conclusion

The study found benzodiazepine and opioid dependence in sub sample of addiction treatment seekers. The results have implications for drug policy and intervention strategies for preventing and treating drug use disorders.

Sex differences in the associations of non-medical use of prescription drugs with depressive and anxiety symptoms among undergraduates in China

BACKGROUND

Non-medical use of prescription drugs (NMUPD) and their association with depression and anxiety are becoming global concerns. Biological sex may introduce differential exposure to NMUPD or depressive/anxiety symptoms. However, few studies have investigated the potential sex differences in the associations of NMUPD with depressive/anxiety symptoms.

METHODS

Data were drawn from the 2019 School-based Chinese College Students Health Survey. A total of 30,039 undergraduates (mean age: 19.8 [SD: 1.3] years) from sixty universities/colleges in China completed standard questionnaires and were included in the study (response rate: 97.7 %).

RESULTS

In the final adjusted model, non-medical use of opioids (experimenters: β = 1.10, [95 % CI, 0.62 to 1.57]) or sedatives (frequent users: β = 2.98, [95 % CI, 0.70 to 5.26]) was associated with depressive symptoms, while non-medical use of opioids (frequent users: β = 1.37, [95 % CI, 0.32 to 2.42]) or sedatives (frequent users: β = 1.19, [95 % CI, 0.35 to 2.03]) was also associated with anxiety symptoms. Sex-stratified analyses indicated that lifetime opioids misuse was associated with depressive symptoms in both sexes but with anxiety symptoms only in males (β = 0.39, [95 % CI, 0.09 to 0.70]). The association of lifetime sedative misuse with depressive symptoms was greater in males, while the significant association with anxiety symptoms remained only in female (β = 0.52, [95 % CI, 0.14 to 0.91]).

LIMITATIONS

Causal inference cannot be made due to the cross-sectional nature of the data.

CONCLUSIONS

Our study suggests NMUPD is associated with depressive and anxiety symptoms among Chinese undergraduates, and the associations may differ by sex.

Population-Based Study on the All-Cause and Cause-Specific Risks of Mortality among Long-Term Opioid Analgesics Users without Cancer in Taiwan

(1) Background: The prevalence of opioid use in Taiwan increased by 41% between 2002 and 2014. However, little is known regarding the risk of mortality among long-term opioid analgesics users who do not have cancer. This study investigated this mortality risk with an emphasis on the calendar year and patients’ age and sex. (2) Methods: This retrospective cohort study included 12,990 adult individuals without cancer who were long-term users of opioid analgesics and were randomly selected from the data set of Taiwan’s National Health Insurance program from 2000 to 2012. They were then followed up through 2013. Information on the underlying causes of death was retrieved from the Taiwan Death Registry. Age, sex, and calendar year-standardized mortality ratios (SMRs) of all-cause and cause-specific mortality were calculated with reference to those of the general population. (3) Results: With up to 14 years of follow-up, 558 individuals had all-cause mortality in 48,020 person-years (cumulative mortality: 4.3%, mortality rate: 11.62 per 1000 person-years). Compared with the general population, the all-cause SMR of 4.30 (95% confidence interval (95% CI): 3.95–4.66) was significantly higher: it was higher in men than in women, declined with calendar year and age, and was significantly higher for both natural (4.15, 95% CI: 3.78–4.53) and unnatural (5.04, 95% CI: 3.88–6.45) causes. (4) Conclusions: Long-term opioid analgesics use among individuals without cancer in Taiwan was associated with a significantly increased risk of mortality. The notably increased mortality in younger adults warrants attention. Strategies to reduce long-term opioid analgesics use, especially their overuse or misuse, are in an urgent need.

Opioid medicines management in primary care settings: A scoping review of quantitative studies of pharmacist activities

To undertake a scoping review of pharmacist activities in opioid medicines management in primary care settings, including those developed or led by pharmacists, or in which pharmacists were members of broader multidisciplinary teams, and to collate the activities, models of care and settings, and reported outcomes. The bibliographic databases MEDLINE, EMBASE, International Pharmaceutical Abstracts, CINAHL, SCOPUS and Web of Science were searched. Studies with quantitative evaluation and published in English were eligible. Participants were patients with any pain category or an opioid use disorder, and healthcare providers. Studies originating in hospitals or involving supply functions were not included. Screening of literature and data charting of results were undertaken by two researchers. The 51 studies included in the scoping review occurred in primary care settings collated into four categories: general practice or primary care clinics, healthcare organisations, community pharmacies and outreach services. Studies were primarily of opioid use in chronic, noncancer pain. Other indications were opioid use disorder, cancer and dental pain. Pharmacist activities targeted risk mitigation, patient and provider education and broader, strategic approaches. Patient-related outcomes included reduced opioid load, improved functionality and symptom management, enhanced access to services and medication-assisted treatments, and engagement in risk-mitigation strategies. Behaviour change of providers was demonstrated. The review has identified the significant contribution that pharmacists working in primary care settings can make to minimise harm from opioids. Strategies implemented in isolation have the potential to further reduce adverse clinical outcomes with greater collaboration and coordination, such as opioid stewardship.

Regional, national and international datasets: How they improve our understanding of the acute harms associated with prescription medicine misuse

Prescription medicine misuse is a significant problem in many areas of the world. Understanding the acute and chronic harms related to misuse of prescription medicines allows healthcare professionals, drug addiction treatment services and legislative authorities to determine what interventions may be beneficial to reduce these harms and protect individuals and society. However, it is difficult to obtain systematic data on the harms associated with prescription medicine misuse because of how patient visits to clinics and hospitals are recorded and coded in regional or national databases. In this review, we discuss how regional, national and international sources of information can help develop a greater understanding of the prevalence and pattern of acute harms related to prescription medicine misuse using data from ambulance attendances, emergency department presentations and poisons information services.