Extent of a valsartan drug shortage and its effect on antihypertensive drug use in the Canadian population: a national cross-sectional study.

BACKGROUND: Drug shortages represent a growing global problem, with potentially serious consequences to patients and the health care system. Our study investigates the impacts of a major recall and shortage of valsartan, an angiotensin receptor blocker (ARB), in July 2018 in Canada. METHODS: We conducted a time-series analysis of antihypertensive drugs dispensed in Canada between 2015 and 2019 using commercially available retail prescription data. Using autoregressive integrated moving average (ARIMA) modelling, we evaluated the change in valsartan use after the recall. We also measured the overall use of ARBs, angiotensin-converting-enzyme (ACE) inhibitors and other antihypertensive drug classes for the same period. RESULTS: After the recall in July 2018, valsartan use decreased 57.8%, from 362 231 prescriptions dispensed in June 2018 to 152 892 in September 2018 (difference = 209 339, p < 0.0001). Overall use of the ARB drug class decreased 2.0%, from 1 577 509 prescriptions dispensed in June 2018 to 1 545 591 in September 2018 (difference = 31 918, p = 0.0003), but use of non-valsartan ARBs increased 14.6%, from 1 215 278 to 1 392 699 prescriptions dispensed (difference = 177 421, p < 0.0001) in the same time frame. Although use of ACE inhibitors initially declined, this reduction was not sustained. The valsartan recall was not associated with a significant impact on use of other antihypertensive drug classes. INTERPRETATION: Our findings illustrate the impact of a major drug shortage, with the immediate and substantial reduction of valsartan dispensed and cascading effects on other ARBs, though future research is warranted to understand the consequences of such extensive shortages on clinical outcomes and health system costs. Improved policy strategies are needed to address the underlying causes of drug shortages and to mitigate their effects.

Natural and Synthetic Cannabinoids: Pharmacology, Uses, Adverse Drug Events, and Drug Interactions.

The purpose of this narrative review is to describe the current use environment of both natural and synthetic cannabinoids while providing context for cannabinoid chemistry and pharmacology. In addition to a long history of recreational and nonmedical use, natural cannabinoids are increasingly used as prescription products, through medical cannabis programs, and as consumer health products. Despite anecdotal safety evidence, cannabis and cannabinoids are pharmacologically complex and pose risks for adverse drug events and drug-drug interactions. Synthetic cannabinoids, particularly agonists of cannabinoid receptors, are more potent than natural cannabinoids and can lead to more severe reactions and medical emergencies. This review provides a summary of approved uses and an overview of mechanisms of action for adverse drug events with natural and synthetic cannabinoids. Clinical considerations for special populations that may be at heightened risk for drug-drug interactions and adverse drug events while using natural or synthetic cannabinoids are examined, and recommendations are provided.

Regulatory status quo and prospects for biosurfactants in pharmaceutical applications.

The concept of going 'green' and 'cold' has led to utilizing renewable resources for the synthesis of microbial biosurfactants that are both patient and eco-friendly. In this review, we shed light on the potential and regulatory aspects of biosurfactants in pharmaceutical applications and how they can significantly contribute to novel concepts for the Coronavirus 2019 (COVID-19) vaccine and future treatment. We emphasize that more specific guidelines should be formulated to regulate the approval of biosurfactants for human use. It is also crucial to implement a risk-based approach from the early research and development (R&D) phase in addition to establishing more robust standardized techniques and assays to evaluate the characteristics of biosurfactants.

Reliance: a smarter way of regulating medical products - The IPRP survey.

Introduction: A survey was conducted among national regulatory authorities' members of the International Pharmaceutical Regulators Programme (IPRP) to collect and share experiences of reliance approaches. Reliance allows formally, or informally, one regulatory authority to use assessments made by other regulatory authorities while remaining responsible for the final decision. Reliance is an essential concept to increase the efficiency of the global regulatory oversight of medical products by national regulatory authorities.Areas covered: This article describes the findings and recommendations from the IPRP survey. It shows that reliance in the area of medical product oversight is broadly accepted. The first part presents the acceptance and reasons for accepting reliance including the need for trust, then gives examples of the most common areas for reliance, and explains the difference between unilateral or reciprocal reliance. Finally, the article analyzes the lessons learned including challenges and opportunities for reliance on regulatory authorities to facilitate patient access in their jurisdictions.Expert opinion: Regulatory reliance facilitates regulatory approvals and allows to use resources in a more efficient way and ultimately serves patients by facilitating earlier access to quality-assured, safe, and effective medicines.

Considerations from the Innovation and Quality Induction Working Group in Response to Drug-Drug Interaction Guidance from Regulatory Agencies: Guidelines on Model Fitting and Recommendations on Time Course for In Vitro Cytochrome P450 Induction Studies Including Impact on Drug Interaction Risk Assessment.

Translational and ADME Sciences Leadership Group Induction Working Group (IWG) presents an analysis on the time course for cytochrome P450 induction in primary human hepatocytes. Induction of CYP1A2, CYP2B6, and CYP3A4 was evaluated by seven IWG laboratories after incubation with prototypical inducers (omeprazole, phenobarbital, rifampicin, or efavirenz) for 6-72 hours. The effect of incubation duration and model-fitting approaches on induction parameters (Emax and EC50) and drug-drug interaction (DDI) risk assessment was determined. Despite variability in induction response across hepatocyte donors, the following recommendations are proposed: 1) 48 hours should be the primary time point for in vitro assessment of induction based on mRNA level or activity, with no further benefit from 72 hours; 2) when using mRNA, 24-hour incubations provide reliable assessment of induction and DDI risk; 3) if validated using prototypical inducers (>10-fold induction), 12-hour incubations may provide an estimate of induction potential, including characterization as negative if <2-fold induction of mRNA and no concentration dependence; 4) atypical dose-response ("bell-shaped") curves can be addressed by removing points outside an established confidence interval and %CV; 5) when maximum fold induction is well defined, the choice of nonlinear regression model has limited impact on estimated induction parameters; 6) when the maximum fold induction is not well defined, conservative DDI risk assessment can be obtained using sigmoidal three-parameter fit or constraining logistic three- or four-parameter fits to the maximum observed fold induction; 7) preliminary data suggest initial slope of the fold induction curve can be used to estimate Emax/EC50 and for induction risk assessment. SIGNIFICANCE STATEMENT: Regulatory agencies provide inconsistent guidance on the optimum length of time to evaluate cytochrome P450 induction in human hepatocytes, with EMA recommending 72 hours and FDA suggesting 48-72 hours. The Induction Working Group analyzed a large data set generated by seven member companies and determined that induction response and drug-drug risk assessment determined after 48-hour incubations were representative of 72-hour incubations. Additional recommendations are provided on model-fitting techniques for induction parameter estimation and addressing atypical concentration-response curves.

What Makes a National Pharmaceutical Track and Trace System Succeed? Lessons From Turkey.

BACKGROUND: Track and trace systems are increasingly being implemented as a technological solution to secure pharmaceutical supply chains. Turkey was the first country to implement a full pharmaceutical track and trace system throughout the entire regulated domestic supply chain. This article explores the emergence and functioning of this system and the consequences for substandard and falsified medicine with a focus on the underlying political and economic factors. METHODS: This study uses an explanatory case study approach that combined interviews with purposefully selected key informants and document analyses. RESULTS: The main drivers for implementing the pharmaceutical track and trace system in Turkey centered on the elimination of reimbursement fraud and the prevention of falsified medicine in the regulated supply chain. Although stakeholders experienced both physical and software-related problems in implementation, the alignment of incentives of all stakeholders with the power of the state, along with leeway for adaptations, ultimately resulted in a successful process. This track and trace system provides a clean regulated supply chain, minimizes reimbursement fraud, facilitates fast market recalls, and can flag likely medicine shortages. Staff previously engaged in pharmacy inspections now concentrate on ensuring production quality, which reduces the risk of substandard medicines. CONCLUSIONS: In Turkey, 4 factors drove the successful implementation of pharmaceutical track and trace: the political determination to eliminate reimbursement fraud, a large pharmaceutical market dominated by a single payer, medicine reimbursement being contingent on verified dispensing and prescription, and flexibility to adapt the system according to the needs of stakeholders during implementation.

A Rapid Review of the Impact of Systems-Level Policies and Interventions on Population-Level Outcomes Related to the Opioid Epidemic, United States and Canada, 2014-2018.

OBJECTIVES: In the United States, rising rates of overdose deaths and recent outbreaks of hepatitis C virus and HIV infection are associated with injection drug use. We updated a 2014 review of systems-level opioid policy interventions by focusing on evidence published during 2014-2018 and new and expanded opioid policies. METHODS: We searched the MEDLINE database, consistent with the 2014 review. We included articles that provided original empirical evidence on the effects of systems-level interventions on opioid use, overdose, or death; were from the United States or Canada; had a clear comparison group; and were published from January 1, 2014, through July 19, 2018. Two raters screened articles and extracted full-text data for qualitative synthesis of consistent or contradictory findings across studies. Given the rapidly evolving field, the review was supplemented with a search of additional articles through November 17, 2019, to assess consistency of more recent findings. RESULTS: The keyword search yielded 535 studies, 66 of which met inclusion criteria. The most studied interventions were prescription drug monitoring programs (PDMPs) (59.1%), and the least studied interventions were clinical guideline changes (7.6%). The most common outcome was opioid use (77.3%). Few articles evaluated combination interventions (18.2%). Study findings included the following: PDMP effectiveness depends on policy design, with robust PDMPs needed for impact; health insurer and pharmacy benefit management strategies, pill-mill laws, pain clinic regulations, and patient/health care provider educational interventions reduced inappropriate prescribing; and marijuana laws led to a decrease in adverse opioid-related outcomes. Naloxone distribution programs were understudied, and evidence of their effectiveness was mixed. In the evidence published after our search's 4-year window, findings on opioid guidelines and education were consistent and findings for other policies differed. CONCLUSIONS: Although robust PDMPs and marijuana laws are promising, they do not target all outcomes, and multipronged interventions are needed. Future research should address marijuana laws, harm-reduction interventions, health insurer policies, patient/health care provider education, and the effects of simultaneous interventions on opioid-related outcomes.

Understanding biosimilars and its regulatory aspects across the globe: an ophthalmology perspective.

PURPOSE: This article aims to analyse the key regulatory guidelines across the globe concerning biosimilars. MATERIALS AND METHODS: Review of the current literature. RESULTS: Biosimilars are well regulated with the majority of regulators having enforced the guidelines for the development and approval, and new biosimilar drugs are appearing on the horizon to provide a therapeutic option to a wider population base because of its cost-effectiveness and proven safety. Due to their extensive analytical data, clinical data and pharmacovigilance studies, their development should not be considered similar to generic drugs. CONCLUSION: This review discusses the biosimilars, their regulation globally and their difference from generics from ophthalmic perspective.

Drug policy and Collective Health: necessary dialogues. / Política de drogas e Saúde Coletiva: diálogos necessários.

The current status of policies on illicit drugs has implications for Collective Health that need to be discussed in depth. This essay aims to explore, in light of the best evidence, the public health impact of drug policies focused on the criminalization of growing, selling, and consuming psychoactive substances. Brazil provides the context for the main analysis. The principal points addressed in this work include drugs as a social issue and the definition of the prohibitionist paradigm, evidence of the unhealthy relationship between this paradigm and the population's health, the issue of a model of care for users of psychoactive substances focused on therapeutic communities, and future paths to be explored to overcome the prohibition of illicit drugs as the principal approach to the issue. Among the main problematic elements in the repressive approach in the Brazilian context, the study highlights violence and homicides, the health impacts of incarceration and blocked access to the health system, and potential new therapies derived from currently banned psychoactive substances. As proposals for future policy changes, the study highlights decriminalization of the use, possession, and small-scale sale of drugs; the reduction of the violence and discrimination associated with policing; focus on harm reduction policies; approach to gender-related specificities; and inclusion of social variables as metrics for successful treatment of problematic drug use. In conclusion, it is relevant that the social issue and drug policy have become the object of more studies in the field of Collective Health.

A hegemonia atual das políticas de drogas ilícitas tem implicações à Saúde Coletiva que necessitam ser discutidas de forma aprofundada. Este ensaio procura explorar, à luz das melhores evidências, o impacto das políticas sobre drogas focadas na criminalização do plantio, comércio e consumo de substâncias psicoativas sobre a saúde das populações. O contexto de análise principal será o brasileiro. Os pontos principais abordados por este trabalho incluem a questão social das drogas e a definição do paradigma proibicionista, as evidências da relação insalubre entre tal paradigma e a saúde das populações, a problemática de um modelo de assistência aos usuários de substâncias psicoativas focado nas comunidades terapêuticas, e futuros caminhos a serem explorados na superação da proibição de drogas ilícitas como a principal forma de abordar a questão. Entre os principais elementos problemáticos da abordagem repressiva no contexto brasileiro podem ser destacados a violência e a mortalidade por homicídios, os impactos sanitários do encarceramento e o bloqueio de acesso ao sistema de saúde e a novas terapias derivadas de substâncias psicoativas atualmente proscritas. Como propostas de mudanças políticas futuras, ressalta-se a descriminalização do uso, posse e pequenas vendas de drogas; a redução da violência e da discriminação associadas ao policiamento; o foco em políticas de redução de danos; a abordagem das especificidades relacionadas ao gênero; incluir variáveis sociais como métrica do sucesso no tratamento do uso problemático de drogas. Concluindo, é relevante que a questão social e política das drogas se torne objeto de mais estudos no campo da Saúde Coletiva.

La hegemonía actual de las políticas de drogas ilícitas tiene implicaciones para la Salud Colectiva que necesitan discutirse profundamente. Este trabajo estudia, a la luz de las mejores evidencias, el impacto de las políticas sobre las drogas, enfocadas en la criminalización del cultivo, tráfico y consumo de sustancias psicoactivas, para la salud de la población. El contexto de análisis principal será el brasileño. Los puntos principales abordados por este trabajo incluyen: cuestión social de las drogas y la definición del paradigma prohibicionista; evidencias de la relación insana entre este paradigma y la salud de las poblaciones; así como la problemática de un modelo de asistencia a los consumidores de sustancias psicoactivas centrado en comunidades terapéuticas, y los futuros caminos que se exploran para que se supere la prohibición de las drogas ilícitas como la vía principal de abordaje de esta cuestión. Entre los elementos primordiales y problemáticos del enfoque represivo en el contexto brasileño se pueden destacar: violencia y mortalidad por homicidios; impactos sanitarios con conlleva el encarcelamiento y el bloqueo del acceso al sistema de salud; así como las nuevas terapias, derivadas de sustancias psicoactivas, actualmente proscritas. A modo de propuestas para posibles cambios políticos futuros, se resalta la descriminalización del consumo, posesión y venta de pequeñas cantidades de droga; la reducción de la violencia y discriminación, asociadas a la vigilancia policial; situar el centro de la cuestión en políticas de reducción de perjuicios para la salud; plantear las especificidades relacionadas con el género; así como incluir variables sociales como medir el éxito de los tratamientos relacionados con el consumo problemático de drogas. A modo de conclusión, es relevante que la cuestión social y política de las drogas se convierta en objeto de más estudios en el campo de la Salud Colectiva.

Critical Success Factors of a Drug Traceability System for Creating Value in a Pharmaceutical Supply Chain (PSC).

The general objective of this study was to identify and prioritize the critical success factors required for the adoption of a system to create value for pharmaceutical supply chain stakeholders, and the pharmaceutical supply network as a whole, by using a multi-perspective framework that combines elements of the technology-organization-environment (TOE) contexts for enterprises. The methodology is based on a literature review and expert interviews following the analytic hierarchy process (AHP). This paper identifies and prioritizes 18 critical success factors from three categories: technological, organizational, and environmental. From a practical point of view, this research contributes to the literature by providing expert insight on the topic of drug traceability, especially in terms of how possible values can be captured by companies.