Burden of Exposure to Potential Interactions Between Antiretroviral and Non-Antiretroviral Medications in a Population of HIV-Positive Patients Aged 50 Years or Older

An update on drug-drug interactions in older adults living with human immunodeficiency virus (HIV)

INTRODUCTION

People with HIV are living longer due to advances in antiretroviral therapy. With improved life expectancy comes an increased lifetime risk of comorbid conditions - such as cardiovascular disease and cancer - and polypharmacy. Older adults, particularly those living with HIV, are more vulnerable to drug interactions and adverse effects, resulting in negative health outcomes.

AREA COVERED

Antiretrovirals are involved in many potential drug interactions with medications used to treat common comorbidities and geriatric conditions in an aging population of people with HIV. We review the mechanisms and management of significant drug-drug interactions involving antiretroviral medications and non-antiretroviral medications commonly used among older people living with HIV. The management of these interactions may require dose adjustments, medication switches to alternatives, enhanced monitoring, and considerations of patient- and disease-specific factors.

EXPERT OPINION

Clinicians managing comorbid conditions among older people with HIV must be particularly vigilant to side effect profiles, drug-drug interactions, pill burden, and cost when optimizing treatment. To support healthier aging among people living with HIV, there is a growing need for antiretroviral stewardship, multidisciplinary care models, and advances that promote insight into the correlations between an individual, their conditions, and their medications.

Management of HIV in the older adults: Clinical and public health challenge

As a result of significant advances in antiretroviral therapy (ART), the number of people living with human immunodeficiency virus (PLWH) who are alive well into their senior years has increased significantly in recent years. While increased life expectancy is a highly desired outcome for PLWH, it brings with it a number of challenges that are only now starting to be understood and fully appreciated. These challenges include higher rates of co-morbidities, polypharmacy, drug side effects, and cognitive deficits, as well as numerous psychosocial issues such as stigma, loneliness, and depression. Older PLWH also face challenges related to housing, health insurance, and long-term care. This review will discuss many of the challenges faced by older PLWH and present clinical and public health responses with suggested interventions that may improve outcomes for this population.

Changing co-morbidity and increasing deprivation among people living with HIV: UK population-based cross-sectional study

BACKGROUND

The great success of HIV treatments means that, increasingly, people living with HIV (PLHIV) are growing old enough to develop age-associated comorbid conditions. We investigated the evolution of comorbid conditions and demographics among PLHIV in England.

METHODS

In a cross-sectional study linking Clinical Practice Research Datalink (CPRD) primary care, hospitalization, death registry and Index of Multiple Deprivation data, we measured the prevalence of 304 individual health conditions, categorized into 47 condition groups (36 non-communicable, 11 communicable). Using logistic regression, we calculated odds ratios (ORs) for the likelihood of each condition and condition group in 2015 versus 2008, adjusting for age, sex and deprivation.

RESULTS

In 2015, there were 964 CPRD-registered PLHIV compared with 1987 in 2008; 62% were male and 38% female in both cohorts. The 2015 cohort was older, with 51.1% aged 45-64 years and 7.2% aged 65-84 years compared with 31.8% and 3.2%, respectively, in 2008. Deprivation was higher in 2015, at 23.9% (quintile 4) and 28.7% (quintile 5) compared with 5.8% and 6.6%, respectively, in 2008. Of 36 non-communicable condition groups, 14 (39%) occurred in ≥ 10% of PLHIV in 2015, of which seven were more likely in 2015 than in 2008: renal-chronic-kidney-disease [odds ratio (OR) = 1.96 (95% CI: 1.33-2.90); endocrine-obesity [OR = 1.76 (1.12-2.77)]; rheumatology [OR = 1.64 (1.30-2.07)]; dermatology [OR = 1.55(1.29-1.85)]; genito-urinary-gynaecological [OR = 1.44(1.18-1.76)]; eyes-ears/nose/throat [OR = 1.31(1.08-1.59)]; and gastro-intestinal conditions [OR = 1.28 (1.04-1.58)]. Two condition groups, respiratory-chronic-obstructive-pulmonary-disease [OR = 0.36 (0.19-0.69)] and endocrine-diabetes [OR = 0.49 (0.34-0.70)], were less likely in 2015. Ten out of 11 communicable infectious condition groups were less likely in 2015.

CONCLUSIONS

Although infections in PLHIV have fallen, chronic non-communicable comorbidity is increasingly prevalent. Alongside the marked increases in deprivation and ageing, this study suggests that socio-economic measures in addition to healthcare provision are needed to achieve holistic health for PLHIV.

Evolving patterns of antiretroviral drug interactions in people living with HIV in British Columbia, Canada

OBJECTIVES

To characterize the annual prevalence of antiretroviral/non-antiretroviral drug interactions (DIs) in relation to antiretroviral therapy (ART) prescribing patterns, and to describe DI-related ART changes.

DESIGN/METHODS

This cohort study included ART-treated adults in British Columbia, Canada between 01-Jan-2010 and 31-Dec-2016. Medication dispensing records were abstracted from a population-based, linked administrative-health dataset and used to identify antiretroviral-comedication DIs ("caution"/"avoid" DIs in HIV-focused DI-checkers). We identified temporal trends in annual DI prevalence and quantified the association between taking higher DI-risk ART and receiving non-recommended antiretroviral-comedication combinations using Poisson regression models, modified for binary outcomes and correlated data. Clinician-reported, DI-related ART changes and associated adverse events were abstracted from an HIV drug treatment registry and summarized descriptively.

RESULTS

Among 8571 ART-treated adults who received non-antiretroviral comedications, prevalence of having any DI or receiving non-recommended drug combination(s) significantly declined from 85% to 71% and 5.6% to 3.2%, respectively, between 2010 and 2016 (p < 0.001). This paralleled a shift from higher DI-risk ART (e.g. ritonavir/cobicistat-boosted protease inhibitors) to lower DI-risk ART (e.g. unboosted integrase inhibitors). Risk of receiving a non-recommended antiretroviral-comedication combination was greater for persons taking higher versus lower DI-risk ART (aRR 3.12, 95%CI 2.24-4.35). Boosted antiretroviral-inhaled corticosteroid DIs accounted for the most commonly dispensed, non-recommended drug combinations, and the most commonly reported DI-related adverse events (adrenal insufficiency).

CONCLUSION

The prevalence of antiretroviral-comedication DIs is declining as ART shifts towards antiretrovirals with lower DI potential, but non-recommended drug combinations remain a concern. Healthcare providers should screen for DIs whenever drugs are prescribed or dispensed.

Facilitating primary care non-antiretroviral drug prescribing in people living with HIV: The 'THINK ARV' initiative

OBJECTIVES

Older people living with HIV (PLWH) have higher rates of multimorbidity, polypharmacy and an associated increased risk of potential drug-drug interactions (DDIs). We describe the development, implementation and evaluation of an intervention to increase community prescribers' access to specialist prescribing advice.

METHODS

Phase One: a survey evaluating General Practitioners' (GPs') knowledge of, and confidence detecting DDIs affecting PLWH, was circulated to eight General Practices in one UK city. Phase Two: co-production was used to develop the THINK ARV intervention for prescribers in city-wide General Practices: a dedicated mobile phone and e-mail advice service staffed by HIV specialist pharmacists. Queries were audited for 6 months pre- and post-intervention. A user-satisfaction survey was emailed to enquirers.

RESULTS

Phase One: 42 GPs responded, of whom 62% requested further support identifying DDIs among PLWH. Phase Two: the number of queries received increased from 25 (6 months before 'THINK ARV' launch) to 63 in the following 6 months (152% increase). 94% of the queries were specifically about DDIs.

CONCLUSIONS

Increasing community prescribers' access to specialist telephone and e-mail advice resulted in increased awareness and detection of DDIs. Similar interventions could be embedded within different healthcare settings to optimise medicines and avoid potential patient harm.

A patient-centred approach to deprescribing antiretroviral therapy in people living with HIV

Only a few studies have explored the benefit of deprescribing in people living with HIV (PLWH), focusing on the discontinuation of non-antiretrovirals (non-ARVs) used for HIV-associated comorbidities (co-medications), or the management of drug-drug interactions (DDIs) between ARVs or between ARVs and co-medications. The availability of modern single-tablet regimens, two-drug regimens and long-acting therapy opens a discussion regarding ARV deprescribing strategies. The objective of this article is to discuss ARV deprescribing strategies in the context of medication-related burden and patients' lived experience with medicine (PLEM) and to suggest indications for whom, when, how and why to consider these ARV options in PLWH. A PLEM construct helps to better interpret these strategies and provides a patient-centred precision-medicine approach. There are several safe and virologically effective ARV deprescribing strategies, but the ultimate benefits of these interventions still need to be further explored in terms of the overall health and quality of life of patients.

Cabotegravir-Rilpivirine: The First Complete Long-Acting Injectable Regimen for the Treatment of HIV-1 Infection

Objective:

To review the efficacy and safety of cabotegravir (CAB) with rilpivirine (RPV) in the treatment of HIV-1 infection.

Data Sources:

A literature search was performed using PubMed and Google Scholar (2010 to January 2021) with the search terms cabotegravir and rilpivirine. Other resources included abstracts presented at recent conferences and the manufacturer’s website and prescribing information.

Study Selection:

All English-language articles of studies assessing the efficacy and safety of CAB with RPV were included.

Data Synthesis:

The combination of CAB, a new integrase strand transfer inhibitor, and RPV, an established nonnucleoside reverse transcriptase inhibitor, is the first long-acting dual therapy approved for the treatment of HIV-1 infection in adults who have achieved viral suppression on a standard antiretroviral therapy (ART). This regimen demonstrated comparable maintenance of viral suppression evaluated up to 160 weeks, with low rates of virological failure. CAB and RPV are available as suspension given intramuscularly in 2 separate injections every 4 weeks. Common adverse effects include injection site reactions, pyrexia, fatigue, and headache. CAB and RPV are also available as tablets given orally for bridging therapy.

Relevance to Patient Care and Clinical Practice:

This long-acting dual therapy represents an attractive option with a high barrier to resistance for adults who have achieved viral suppression on standard ART and who prefer monthly injections over daily oral therapy.

Conclusions:

CAB-RPV is the first complete long-acting injectable that provides a convenient way to maintain viral suppression with no negative effects on renal and bone health and few drug interactions.

Higher plasma drug levels in elderly people living with HIV treated with darunavir

Background

The proportion of elderly people living with HIV-1 (PLHIV) is rising. In older patients, comorbidities and concomitant medications are more frequent, increasing the risk of potential drug-drug interactions (PDDIs). Data on the pharmacokinetics of ART in individuals aged ≥ 65 years of age are scarce. We compared plasma drug levels of ART, PDDIs, and side-effects in PLHIV aged ≥ 65 years of age, with controls ≤ 49 years of age.

Methods

Patients ≥ 65 years of age and controls ≤ 49 years of age, all of whom were on stable treatment with atazanavir (ATV), darunavir (DRV), or efavirenz (EFV) were included cross-sectionally. Plasma drug levels of ART were analyzed, comorbidities, concomitant medication, adherence, and side-effects recorded, and PDDIs analyzed using drug interactions databases.

Results

Between 2013 and 2015, we included 100 individuals ≥ 65 years of age (study group) and 99 controls (≤ 49 years of age). Steady-state DRV concentrations were significantly higher in the study group than in the control group (p = 0.047). In the ATV group there was a trend towards a significant difference (p = 0.056). No significant differences were found in the EFV arm. The DRV arm had a higher frequency of reported side-effects than the ATV and EFV arms in the study group (36.7% vs. 0% and 23.8% respectively (p = 0.014), with significant differences between DRV vs. ATV, and EFV vs. ATV).

Conclusions

Higher steady-state plasma levels of DRV and ATV (but not EFV) were found in PLHIV aged ≥ 65 years of age, compared to controls ≤ 49 years of age.

Co-medications and Drug-Drug Interactions in People Living with HIV in Turkey in the Era of Integrase Inhibitors

BACKGROUND

Long life expectancy in people living with human immunodeficiency virus (PLWH) caused an increase in comorbidities and co-medications. We aimed to analyse comedications and drug-drug interactions (DDIs) in antiretroviral therapy (ART)-naive PLWH in the era of integrase inhibitors.

METHODS

A retrospective observational study was conducted between January 2016-August 2019. Patients' characteristics and chronic co-medications were recorded. The University of Liverpool HIV drug interaction database was used for DDIs.

RESULTS

Among 745 patients, the chronic co-medication rate was 30.9%. Older age (p<0.001, OR:6.66, 95% CI: 3.86-11.49) and female gender (p=002, OR:2.25, 95%:1.14-4.44) were independently associated with co-medication. Cardiovascular system (CVS) and central nervous system (CNS) drugs were the most common co-medications. Older age patients (p<0.001, OR:12.04, 95% CI:4.63-36.71), having heterosexual (HS) contact (p=0.003, OR:3.8, 95% CI:1.57-9.22) were independently associated with CVS drugs use, while being men who have sex with men (MSM) (p=0.03, OR:2.59, 95% CI:1.11-6.03) were associated with CNS drugs use. DDIs were seen in 37.4% of patients with co-medications. Antidiabetics (23.3%), CNS (22.1%) and CVS drugs (19.8%) most commonly had DDIs. Contraindication was most commonly seen between inhaled corticosteroids and elvitegravir/cobicistat. A number of non-ART drugs, elvitegravir/cobicistat, antidiabetics, vitamins were independently associated with the presence of DDIs.

CONCLUSION

Results suggested the need for attention about co-medication in PLWH regardless of whether they are young or older. CNS drugs should be questioned more detailed in MSM, as well as CVS drugs in older HS patients. Elvitegravir/cobicistat is significantly associated with DDIs and switching to an unboosted INSTI should be considered in patients with multiple comorbidities.

Assessment of drug-drug interaction in an elderly human immunodeficiency virus population: Comparison of 3 expert databases

AIMS

Polypharmacy increase the risk of drug-drug interactions (DDIs) in the elderly population living with human immunodeficiency virus (HIV). Several expert databases can be used to evaluate DDIs. The aim of the study was to describe actual DDIs between antiretroviral drugs and comedications in an elderly population and to compare grading of the DDIs in 3 databases.

METHODS

All treatments of HIV-infected subjects aged 65 years and older were collected in 6 French HIV centres. Summary of Product Characteristic (SPC), French DDI Thesaurus (THES), and Liverpool HIV DDI website (LIV) were used to define each DDI and specific grade. DDIs were classified in yellow flag interaction (undefined grade in SPC and THES or potential weak interaction in LIV), amber flag interaction (to be considered/precaution of use in SPC and THES and potential interaction in LIV) and red flag interaction (not recommended/contraindication in SPC and THES and do not administer/contraindication in LIV).

RESULTS

Among 239 subjects included, 60 (25.1%) had at least 1 DDI for a total of 126 DDIs: 23/126 red flag DDIs were identified in 17 patients. All these 23 DDIs were identified in LIV. THES and SPC missed 6 and 1 red flag DDIs, respectively. Seven of 23 red flag DDIs were identified in the 3 databases concomitantly.

CONCLUSION

Polypharmacy is frequent in this elderly HIV population leading to DDI in a quarter of the subjects. The discrepancies between databases can be explained by differences in analysis methods. A consensus between databases would be helpful for clinicians.

The Challenge of Potential Drug-Drug Interactions Among People Living With HIV on Antiretroviral Therapy: A Cross-Sectional Study in Selected Provinces in China

Objectives

Potential drug–drug interactions (DDIs) are a significant therapeutic threat among human immunodeficiency virus (HIV)-positive individuals on antiretroviral (ARV) medications. DDIs involving ARV drugs in mainland China are unknown and insufficiently described. Herein, we investigated the prevalence and frequencies of potential ARV DDIs in Chinese people living with HIV (PLWH), then we assessed the risk factors associated with potential DDIs.

Methods

This study was conducted with HIV-positive adults undergoing ARV medications from multiple centers across China. The latest prescription of each participant was evaluated for potential DDIs using the Liverpool HIV drug interaction database. Multivariable logistic regressions were used to evaluate the factors associated with DDIs.

Results

Among 600 PLWH recruited, at least one non-HIV co-medication was observed in 511 (85.2%) individuals. A total of 2566 DDIs were identified, of which 11 (0.43%) and 311 (12.89%) were of contraindicated (red-flags) and dosage/timing adjustment required (orange-flags), respectively. Multivariate regression analysis revealed a higher risk of clinically significant DDIs (red- and orange-flagged comedication) associated with: the use of boosted protease inhibitors (p < 0.0001), boosted integrase strand transfer inhibitors (p < 0.0001), and non-nucleoside reverse transcriptase inhibitors-based ARV regimen (p < 0.0001); or the use of antiinfectives for systemic use (p < 0.0001), cardiovascular system drugs (p < 0.0001), nervous system drugs (p < 0.0001), fungal infection (p = 0.0071), and Herpes simplex virus infection (p = 0.0231).

Conclusions

Potential DDIs and inappropriate medications constitute a burden for people living with HIV in China. The knowledge of DDIs patterns and the scan for DDIs is crucial. Indeed, they can help to prevent drug-related adverse outcomes in such immunodeficient population.

Polypharmacy and drug-drug interactions in older and younger people living with HIV: the POPPY study

BACKGROUND

Polypharmacy (use of ≥ five medications) increases the risk of drug-drug interactions and can lead to negative health outcomes. This study aimed to review the medications of people living with HIV (PLWH) and HIV-negative controls in the POPPY study and evaluate the frequency of polypharmacy and potential drug-drug interactions (PDDIs).

METHODS

PDDIs between non-antiretroviral (ARV) drugs were analysed using the Lexicomp^® database, and PDDIs between non-ARV and ARV drugs using the Liverpool drug interaction database. Between-group differences were assessed using χ², Mann-Whitney U and Kruskal-Wallis tests.

RESULTS

This analysis included 698 PLWH ≥50 years, 374 PLWH <50 years and 304 HIV-negative controls ≥50 years. The prevalence of polypharmacy was 65.8% in older PLWH, 48.1% in younger PLWH and 13.2% in the HIV-negative group. When ARVs were excluded, 29.8% of older PLWH and 14.2% of younger PLWH had polypharmacy. The prevalence of ≥1 PDDI involving non-ARV drugs was 36.1%, 20.3% and 16.4%, respectively, in older PLWH, younger PLWH and HIV-negative controls. In PLWH the prevalence of ≥1 PDDI involving ARV and non-ARV drugs was 57.3% in older PLWH and 32.4% in younger PLWH.

CONCLUSIONS

Polypharmacy and PDDIs involving non-ARV/ARV drugs and non-ARV/non-ARV drugs were common among older PLWH, highlighting the need for increased awareness and additional research on all types of PDDI.

Use of comedications and potential drug-drug interactions in people living with HIV in China

BACKGROUND

Because people living with HIV (PLWH) are ageing, they will inevitably develop non-communicable diseases (NCDs) and the number of non-HIV medications will increase. Drug-drug interactions(DDIs) will become an ever-increasing issue. However, little is known about this important issue in Chinese PLWH. This study aimed to investigate the prevalence and risk factors of DDIs among PLWH in China.

METHODS

Chinese PLWH aged ≥18 years were enrolled prospectively from October 2018 to April 2019 and after informed consent was obtained, they were ask to fill out a questionnaire about comorbidity and co-medications. Potential DDIs were identified using the University of Liverpool HIV Drug Interaction Checker.

RESULTS

A total of 1804 questionnaires were included. Antiretroviral drugs (ARVs) that most frequently were prescribed were lamivudine (96.18%), efavirenz(64.64%) and tenofovir(60.62%). 16.96% of the participations reported current co-infection with HIV and14.69% reported NCDs. 263(14.57%) participations reported they had used co-medications in the past six months while 186(10.31%) reported they were taking co-medications. Age≥50 years (p < 0.001), living in developed areas(p < 0.001) and lower CD4 cell count(p = 0.045) were independently associated with the use of co-medications. Potential DDIs were identified in 54 (19.15%) persons using co-medications. Age≥50 [OR = 2.272(1.241-4.158)], PLWH with NCDs[OR = 2.889(1.509-5.532)] and usage of protease inhibitors[OR = 2.538(1.250-5.156)] were independently associated with the potential DDIs.

CONCLUSION

The prevalence of the use of co-medications and potential DDIs among Chinese PLWH are low. Older age, NCDs and use of PIs were risk factors for the potential of developing DDIs. With the aging of PLWH, co-medications and DDIs in China warrants more attention.

Polypharmacy in HIV: recent insights and future directions

PURPOSE OF REVIEW

Update findings regarding polypharmacy among people with HIV (PWH) and consider what research is most needed.

RECENT FINDINGS

Among PWH, polypharmacy is common, occurs in middle age, and is predominantly driven by nonantiretroviral (ARV) medications. Many studies have demonstrated strong associations between polypharmacy and receipt of potentially inappropriate medications (PIMS), but few have considered actual adverse events. Falls, delirium, pneumonia, hospitalization, and mortality are associated with polypharmacy among PWH and risks remain after adjustment for severity of illness.

SUMMARY

Polypharmacy is a growing problem and mechanisms of injury likely include potentially inappropriate medications, total drug burden, known pairwise drug interactions, higher level drug interactions, drug--gene interactions, and drug--substance use interactions (alcohol, extra-medical prescription medication, and drug use). Before we can effectively design interventions, we need to use observational data to gain a better understanding of the modifiable mechanisms of injury. As sicker individuals take more medications, analyses must account for severity of illness. As self-report of substance use may be inaccurate, direct biomarkers, such as phosphatidylethanol (PEth) for alcohol are needed. Large samples including electronic health records, genetics, accurate measures of substance use, and state of the art statistical and artificial intelligence techniques are needed to advance our understanding and inform clinical management of polypharmacy in PWH.

Comedication prescription patterns and potential for drug-drug interactions with antiretroviral therapy in people living with human immunodeficiency virus type 1 infection in Germany

PURPOSE

Various first-line recommended antiretroviral therapy (ART) regimens have different drug-drug interaction (DDI)/contraindication profiles. The aim of this study was to estimate the rate of potential DDIs/contraindications of real-world prescribed non-ART comedication with first-line recommended ART in people living with HIV (PLHIV) in Germany.

METHODS

A retrospective, cross-sectional cohort design was used to collect non-ART comedication prescription data from a representative sample of a German health insurance claims database. PLHIV who were prescribed ART during 2016 were included in the analysis. Patients were stratified by sex, age, comorbidities, and time on ART. Prescribed comedications were used to estimate potential DDIs/contraindications for each recommended first-line ART per patient based on criteria from www.hiv-druginteractions.org.

RESULTS

Records from 2680 PLHIV were analyzed. Prescriptions for non-ART comedications were common (mean of seven per patient in the overall population, 10.2 in PLHIV aged 50 years and older). Antiretroviral regimens with the lowest proportion of patients with at least 1 potential DDI/contraindication were unboosted integrase inhibitor, non-tenofovir disoproxil fumarate-based regimens that included raltegravir + emtricitabine/tenofovir alafenamide fumarate (13%), dolutegravir + lamivudine (14%), dolutegravir/abacavir/lamivudine (14%), dolutegravir/emtricitabine/tenofovir alafenamide fumarate (15%), and bictegravir/emtricitabine/tenofovir alafenamide fumarate (19%). Boosted regimens and efavirenz-based regimens presented the highest potential for DDIs/contraindications.

CONCLUSIONS

Comedication with potential DDIs/contraindications with ART is frequently prescribed among PLHIV in Germany. Potential risks for DDIs/contraindications vary by ART, with the lowest potential seen in unboosted integrase strand transfer inhibitor-based regimens, including raltegravir + emtricitabine/tenofovir alafenamide fumarate, followed by three dolutegravir-based regimens.

Reorienting health systems to care for people with HIV beyond viral suppression

The effectiveness of antiretroviral therapy and its increasing availability globally means that millions of people living with HIV now have a much longer life expectancy. However, people living with HIV have disproportionately high incidence of major comorbidities and reduced health-related quality of life. Health systems must respond to this situation by pioneering care and service delivery models that promote wellness rather than mere survival. In this Series paper, we review evidence about the emerging challenges of the care of people with HIV beyond viral suppression and identify four priority areas for action: integrating HIV services and non-HIV services, reducing HIV-related discrimination in health-care settings, identifying indicators to monitor health systems' progress toward new goals, and catalysing new forms of civil society engagement in the more broadly focused HIV response that is now needed worldwide. Furthermore, in the context of an increasing burden of chronic diseases, we must consider the shift that is underway in the HIV field in relation to burgeoning policy and programmatic efforts to promote healthy ageing.

Use of non-HIV medication among people living with HIV and receiving antiretroviral treatment in Côte d'Ivoire, West Africa: A cross-sectional study

Background

In Côte d’Ivoire, people living with HIV (PLHIV) have free access to antiretroviral therapy (ART) and cotrimoxazole. Yet, they may use other medications to treat non-HIV diseases. Scarce data are available regarding the use of non-HIV medications in Africa. This study describes the use of non-HIV medications and identifies the factors associated with their use by PLHIV on ART in Côte d’Ivoire.

Methods

A cross-sectional study was conducted in six HIV clinics in 2016. HIV-1-infected adults receiving ART for at least one year were eligible. A standardized questionnaire was used to collect demographics, HIV characteristics and medication use data. Associated factors were identified using a multivariate adjusted Poisson regression.

Results

A total of 1,458 participants (74% women) were enrolled. The median age was 44 years, and the median duration of ART was 81 months. A total of 696 (48%) participants reported having used at least one non-HIV medication. Among the 1,519 non-HIV medications used, 550 (36%) had not been prescribed and 397 (26%) were from the nervous system class. Individuals who were more likely to report the use of at least one non-HIV medication included those who had been treated in an Abidjan HIV clinic, had a high school education level, had a monthly income between 152 and 304 euros, had a poor perceived health status, had WHO advanced clinical stage, had used traditional medicine products and had not used cotrimoxazole.

Conclusion

Almost half PLHIV on ART reported using non-HIV medication. Further research is needed to assess whether the use of non-HIV medication is appropriate given about a third of those medications are not being prescribed.

Prescribing issues in elderly individuals living with HIV

Introduction: Combined antiretroviral therapy has transformed HIV infection into a chronic disease thus people living with HIV (PLWH) live longer. As a result, the management of HIV infection is becoming more challenging as elderly experience age-related comorbidities leading to complex polypharmacy and a higher risk for drug-drug or drug-disease interactions. Furthermore, age-related physiological changes affect pharmacokinetics and pharmacodynamics thereby predisposing elderly PLWH to incorrect dosing or inappropriate prescribing and consequently to adverse drug reactions and the subsequent risk of starting a prescribing cascade. Areas covered: This review discusses the demographics of the aging HIV population, physiological changes and their impact on drug response as well as comorbidities. Particular emphasis is placed on common prescribing issues in elderly PLWH including drug-drug interactions with antiretroviral drugs. A PubMed search was used to compile relevant publications until February 2019. Expert opinion: Prescribing issues are highly prevalent in elderly PLWH thus highlighting the need for education on geriatric prescribing principles. Adverse health outcomes potentially associated with polypharmacy and inappropriate prescribing should promote interventions to prevent harm including medication reconciliation, medication review, and medication prioritization according to the risks/benefits for a given patient. A multidisciplinary team approach is recommended for the care of elderly PLWH.

Managing antiretroviral therapy in the elderly HIV patient

Introduction: Owing to more effective and less toxic antiretroviral therapy (ART), people living with HIV (PLWH) live longer, a phenomenon expected to grow in the next decades. With advancing age, effectively treated PLWH experience not only a heightened risk for non-infective comorbidities and multimorbidity, but also for geriatric syndromes and frailty. In addition, older adults living with HIV (OALWH) have a higher prevalence of so-called iatrogenic triad described as polypharmacy (PP), potentially inappropriate medication use, and drug-drug interactions. Areas covered: This review will focus the management of ART in OALWH. We will discuss iatrogenic triad and best way to address PP. Special focus will be given to pharmacokinetic and pharmacodynamic aspects of ART in the elderly, evaluation of ART toxicities, and specific ART strategies commonly used in this population. Expert commentary: Research should be focused on recruiting more OALWH, frail individuals in particular, into the clinical trials and specific geriatric outcome need to be considered together with traditional viroimmunological outcomes.