Community Distribution of Naloxone: A Systematic Review of Economic Evaluations

Naloxone Dispensing to Youth Ages 10-19: 2017-2022

BACKGROUND AND OBJECTIVES

Naloxone is lifesaving in the event of an opioid overdose but is underutilized in adolescents. Youth-serving clinicians can play a role in expanding naloxone access by offering it to all youth at risk for opioid-involved overdose, including by prescription. Understanding naloxone dispensing trends to youth can inform efforts to expand its use.

METHODS

We used IQVIA National Prescription Audit Patient Insights data, which contains prescriptions dispensed from ∽48 900 retail pharmacies, representing 93% of all prescriptions from all payers in the United States. Cross-sectional analyses were used to describe naloxone dispensing trends among youth ages 10 to 19 years over time and by patient sex, out-of-pocket cost, prescriber specialty, and payer.

RESULTS

From 2017 to 2022, 59 077 prescriptions for naloxone were dispensed to youth ages 10 to 19. Dispensing rates increased 669%, from 6.6 to 50.9 prescriptions per 100 000 adolescents, with increases each year. Dispensing varied by specialty and sex. Pediatricians accounted for an increasing proportion of prescriptions dispensed with a 6-year increase of 991%. Seventy-four percent of prescriptions were paid through commercial insurance. Although most prescriptions dispensed had low to 0 cost-sharing, 20% had out-of-pocket costs exceeding $25, and over 6% had out-of-pocket costs exceeding $75.

CONCLUSIONS

Pediatricians and other youth-serving clinicians can play an important role in expanding access to naloxone and harm reduction information by prescribing naloxone to all youth who are at risk for overdose. Clinician prescribing of naloxone can augment community distribution and over-the-counter access by making naloxone more widely available at all touchpoints with the health care system.

Europe must continue to lead on harm reduction

Europe has been at the forefront of harm reduction since its inception. These important early steps were in large part a response to the dramatically expanding HIV epidemic, and investing in these innovative interventions early and robustly had a transformative effect. This brought about not just pioneering services but also pioneering policy changes. However, while Western Europe and Member States in the European Union often have been at the vanguard of harm reduction innovation and vocal advocates for public health and human rights-based drug policy reform, the situation has been much different in the "wider" WHO European region, which also includes Eastern and Southeastern Europe as well as Central Asia. This is a result not just of limited budgets for health, but also of punitive laws and policies and persistent stigma and discrimination. Even as harm reduction has demonstrated huge successes in Europe, there is a need to move forward a wider array of services to respond to an evolving and increasingly complex drug situation in Europe. Instead, it is a lack of political will and of political courage that is holding back the establishment, expansion, and deepening of these essential, lifesaving interventions. Responding proactively and effectively to this changing drug situation will require redoubled investment in public health and harm reduction approaches.

Statewide efforts to address the opioid epidemic: Results from a national survey of single state agencies

BACKGROUND

Single State Agencies (SSAs) are at the forefront of efforts to address the nation's opioid epidemic, responsible for allocating billions of dollars in federal, state, and local funds to ensure service quality, promote best practices, and expand access to care. Federal expenditures to SSAs have more than tripled since the early years of the epidemic, yet, it is unclear what initiatives SSAs have undertaken to address the crisis and how they are financing these efforts.

METHODS

This study used data from an internet-based survey of SSAs, conducted by the University of Chicago Survey Lab from January to December 2021 (response rate of 94 %). The survey included a set of 14 items identifying statewide efforts to address the opioid epidemic and six funding sources. We calculated the percentage of SSAs that supported each statewide effort and the percentage of SSAs reporting use of each source of funding across the 14 statewide efforts.

RESULTS

Treatment of opioid-related overdose figured most prominently among statewide efforts, with all SSAs providing funding for naloxone distribution and all but one SSA supporting naloxone training. Recovery support services, Project ECHO, and Hub and Spoke models were supported by the vast majority of SSAs. Statewide efforts related to expanding access to medications for opioid use disorder (MOUD) received somewhat less support, with 45 % of SSAs supporting mobile methadone/MOUD clinics/programs and 70 % supporting buprenorphine in emergency departments. A relatively low proportion of SSAs (54 %) provided support for syringe services programs. State Opioid Response (SOR) funds were the most common funding source reported by SSAs (57 % of SSAs), followed by block grant funds (19 %) and other state funding (15 %).

CONCLUSION

Results highlight a range of SSA efforts to address the nation's opioid epidemic. Limited adoption of efforts to expand access to MOUD and harm reduction services may represent missed opportunities. The uncertainty over reauthorization of the SOR grant post-2025 also raises concerns over sustainability of funding for many of these statewide initiatives.

Take-Home Naloxone Access and Use among Older Adults Living with Pain: A Scoping Review

Background

Opioids are a common treatment for older adults living with pain. Given high rates of polypharmacy and chronic comorbidities, older adults are at risk of opioid overdose. Evidence is now available that take-home naloxone (THN) supports reduction of opioid-related harms. It is unknown what THN initiatives are available for older adults, especially those living with chronic pain.

Objective

To summarize the literature regarding THN, with a focus on older adults using opioids for pain, including facilitators of and barriers to THN access, knowledge gaps, and pharmacist-led initiatives.

Data Sources

A scoping review, guided by an established framework and PRISMA-ScR guidelines, was performed. Methods involved searching 6 bibliographic databases (MEDLINE, Embase, Scopus, APA PsycINFO, Web of Science Core Collection, and PubMed), reference harvesting, and citation tracking. Searches were conducted up to March 2023, with no date limits applied; only English publications were included.

Study Selection and Data Extraction

Study eligibility was determined according to preset criteria, including age; discrepancies were resolved by discussion and consensus. Data were extracted and categorized through thematic analysis.

Data Synthesis

Four studies met the eligibility criteria. All 4 studies detailed THN programs in primary care settings involving older adults taking opioids for pain management. Two of the studies highlighted patient-specific risk factors for opioid overdose, including concomitant use of benzodiazepines and/or gabapentinoids, mean morphine milligram equivalents per day of at least 50, and previous opioid overdose. Two of the studies assessed patient knowledge of opioid overdose management and attitudes toward THN. Educational programs increased patients' interest in THN.

Conclusions

The literature about THN for older adults living with pain is limited, and no literature was found on pharmacist-led initiatives in this area. Future research on THN provision for older adults, including pharmacist-led initiatives, could help to optimize care for older adults living with pain.

Drug Deactivation Pouches for Primary Prevention of Opioid Overdose: Perceptions and Attitudes of Community Members

IMPORTANCE

A substantial number of opioid analgesics dispensed into communities will go unused and be susceptible to diversion for misuse. Convenient, efficient, and environmentally safe mechanisms for disposal are needed to prevent the diversion of unused opioid analgesics.

OBJECTIVE

This initiative piloted the feasibility of distributing drug deactivation pouches in a community setting and examined community members' acceptance, intention to use drug deactivation pouches, and their current disposal practices of unused opioid analgesics. Although many studies have examined the benefits of deactivation pouches in preventing drug overdose, few have explored community members' perspectives, the feasibility, and the acceptability of these pouches in disposing of unused medications.

METHODS

In the fall of 2017, we piloted the distribution of drug deactivation pouches to assess the overall interest in the pouches at a 3-day community event and continued the second wave of this pilot in the community from the summer of 2018 to the spring of 2019.Our main outcomes and measures included the acceptance of the drug deactivation pouches and the intention to use the pouches. "Acceptance" was defined as study participants physically taking the kit and "Intention" was how participants intended to use the pouch.

RESULTS

A total of 170 community members were approached at a community event about the drug deactivation pouches and 116 accepted at least 1 pouch (68.2% acceptance rate). In the second wave, 124 community members were approached by Community Health Workers; 100% accepted the pouch. Overall, the acceptance rate was 81.6%. People mentioned significant interest in using the pouches. Furthermore, surveys that assessed community members' intention to use the deactivation pouches showed that 48% intended to use the pouch.

CONCLUSIONS AND RELEVANCE

The distribution of drug deactivation pouches is feasible in a community setting and although community members expressed interest in using drug deactivation pouches to dispose of unused opioid analgesics and other drugs, the majority still disposed of their unused medications through other avenues. This, underscore the need to raise community members' awareness about the importance, benefits, and viability of these pouches as a tool for the primary prevention of opioid overdose because of their ease of use, safety, environmental considerations, and cost-effectiveness.

An economic evaluation of community pharmacy-dispensed naloxone in Canada

Aims

To determine the cost-effectiveness of pharmacy-based intranasal (IN) and intramuscular (IM) naloxone distribution in Canada.

Methods

We developed a state-transition model for pharmacy-based naloxone distribution, every 3 years, to illicit, prescription, opioid-agonist therapy and nonopioid use populations compared to no naloxone distribution. We used a monthly cycle length, lifetime horizon and a Canadian provincial Ministry of Health perspective. Transition probabilities, cost and utility data were retrieved from the literature. Costs (2020) and quality-adjusted life years (QALY) were discounted 1.5% annually. Microsimulation, 1-way and probabilistic sensitivity analyses were conducted.

Results

Distribution of naloxone to all Canadians compared to no distribution prevented 151 additional overdose deaths per 10,000 persons, with an incremental cost-effectiveness ratio (ICER) of $50,984 per QALY for IM naloxone and an ICER of $126,060 per QALY for IN naloxone. Distribution of any naloxone to only illicit opioid users was the most cost-effective. One-way sensitivity analysis showed that survival rates for illicit opioid users were most influenced by the availability of either emergency medical services or naloxone.

Conclusion

Distribution of IM and IN naloxone to all Canadians every 3 years is likely cost-effective at a willingness-to-pay threshold of $140,000 Canadian dollars/QALY (~3 × gross domestic product from the World Health Organization). Distribution to people who use illicit opioids was most cost-effective and prevented the most deaths. This is important, as more overdose deaths could be prevented through nationwide public funding of IN naloxone kits through pharmacies, since individuals report a preference for IN naloxone and these formulations are easier to use, save lives and are cost-effective. Can Pharm J (Ott) 2024;157:xx-xx.

Association of opioid or other substance use disorders with health care use among patients with suicidal symptoms

INTRODUCTION

Prior literature establishes noteworthy relationships between suicidal symptoms and substance use disorders (SUDs), particularly opioid use disorder (OUD). However, engagement with health care services among this vulnerable population remains underinvestigated. This study sought to examine patterns of health care use, identify risk factors in seeking treatment, and assess associations between outpatient service use and emergency department (ED) visits.

METHODS

Using electronic health records (EHRs) derived from five health systems across New York City, the study selected 7881 adults with suicidal symptoms (including suicidal ideation, suicide attempt, or self-harm) and SUDs between 2010 and 2019. To examine the association between SUDs (including OUD) and all-cause service use (outpatient, inpatient, and ED), we performed quasi-Poisson regressions adjusted for age, gender, and chronic disease burden, and we estimated the relative risks (RR) of associated factors. Next, the study evaluated cause-specific utilization within each resource category (SUD-related, suicide-related, and other-psychiatric) and compared them using Mann-Whitney U tests. Finally, we used adjusted quasi-Poisson regression models to analyze the association between outpatient and ED utilization among different risk groups.

RESULTS

Among patients with suicidal symptoms and SUD diagnoses, relative to other SUDs, a diagnosis of OUD was associated with higher all-cause outpatient visits (RR: 1.22), ED visits (RR: 1.54), and inpatient hospitalizations (RR: 1.67) (ps < 0.001). Men had a lower risk of having outpatient visits (RR: 0.80) and inpatient hospitalizations (RR: 0.90), and older age protected against ED visits (RR range: 0.59-0.69) (ps < 0.001). OUD was associated with increased SUD-related encounters across all settings, and increased suicide-related ED visits and inpatient hospitalizations (p < 0.001). Individuals with more mental health outpatient visits were less likely to have suicide-related ED visits (RR: 0.86, p < 0.01), however this association was not found among younger and male patients with OUD. Although few OUD patients received medications for OUD (MOUD) treatment (9.9 %), methadone composed the majority of MOUD prescriptions (77.7 %), of which over 70 % were prescribed during an ED encounter.

CONCLUSIONS

This study reinforces the importance of tailoring SUD and suicide risk interventions to different age groups and types of SUDs, and highlights missed opportunities for deploying screening and prevention resources among the male and OUD populations. Redressing underutilization of MOUD remains a priority to reduce acute health outcomes among younger patients with OUD.

Guidance on take-home naloxone distribution and use by community overdose responders in Canada

BACKGROUND

The increasing toxicity of opioids in the unregulated drug market has led to escalating numbers of overdoses in Canada and worldwide; takehome naloxone (THN) is an evidence-based intervention that distributes kits containing naloxone to people in the community who may witness an overdose. The purpose of this guidance is to provide policy recommendations for territorial, provincial and federal THN programs, using evidence from scientific and grey literature and community evidence that reflects 11 years of THN distribution in Canada.

METHODS

The Naloxone Guidance Development Group - a multidisciplinary team including people with lived and living experience and expertise of drug use - used the Appraisal of Guidelines for Research & Evaluation (AGREE II) instrument to inform development of this guidance. We considered published evidence identified through systematic reviews of all literature types, along with community evidence and expertise, to generate recommendations between December 2021 and September 2022. We solicited feedback on preliminary recommendations through an External Review Committee and a public input process. The project was funded by the Canadian Institutes of Health Research through the Canadian Research Initiative in Substance Misuse. We used the Guideline International Network principles for managing competing interests.

RECOMMENDATIONS

Existing evidence from the literature on THN was of low quality. We incorporated evidence from scientific and grey literature, and community expertise to develop our recommendations. These were in 3 areas: routes of naloxone administration, THN kit contents and overdose response. Take-home naloxone programs should offer the choice of both intramuscular and intranasal formulations of naloxone in THN kits. Recommended kit contents include naloxone, a naloxone delivery device, personal protective equipment, instructions and a carrying case. Trained community overdose responders should prioritize rescue breathing in the case of respiratory depression, and conventional cardiopulmonary resuscitation in the case of cardiac arrest, among other interventions.

INTERPRETATION

This guidance development project provides direction for THN programs in Canada in the context of limited published evidence, with recommendations developed in collaboration with diverse stakeholders.

The role of increasing pharmacy and community distributed naloxone in the opioid overdose epidemic in Massachusetts, Rhode Island, and New York City

Background

Naloxone distributed to people at risk for opioid overdose has been associated with reduced overdose death rates; however, associations of retail pharmacy-distributed naloxone with overdose mortality have not been evaluated.

Methods

Our analytic cohort uses retail pharmacy claims data; three health departments' community distribution data; federal opioid overdose data; and American Community Survey data. Data were analyzed by 3-digit ZIP Code and calendar quarter-year (2016Q1-2018Q4), and weighted by population. We regressed opioid-related overdose mortality on retail-pharmacy and community naloxone distribution, and community-level demographics using a linear model, hypothesizing that areas with high overdose rates would have higher current levels of naloxone distribution but that increasing naloxone distribution from one quarter to the next would be associated with lower overdose.

Results

From Q1-2016 to Q4-2018, the unadjusted naloxone distribution rate increased from 97 to 257 kits per 100,000 persons, while the unadjusted opioid overdose mortality rate fell from 8.1 to 7.2 per 100,000 persons. The concurrent level of naloxone distribution (both pharmacy and community) was positively and significantly associated with fatal opioid overdose rates. We did not detect associations between change in naloxone distribution rates and overdose mortality.

Conclusion

Naloxone distribution volumes were correlated with fatal opioid overdose, suggesting medication was getting to communities where it was needed most. Amid high rates of overdose driven by fentanyl in the drug supply, our findings suggest additional prevention, treatment, and harm reduction interventions are required-and dramatically higher naloxone volumes needed-to reverse the opioid overdose crisis in the US.