Opiate Treatment with Agonists Including Methadone, Buprenorphine, and Suboxone
- Heroin-Assisted Treatment
- Opioid Crisis
- Supervised Consumption Facilities
- Syringe Service Programs
- Vivitrol (Extended-Release Naltrexone)
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11. Methadone Maintenance as a Treatment for Opioid Dependence
"Methadone is a long-acting µ-opioid receptor agonist, introduced in the 1960s, after being developed in Germany at the end of World War II.60 It has an onset of action within 30 minutes61-63 and an average duration of action of 24 to 36 hours. Its oral bioavailability is excellent and approaches 90%. These unique pharmacologic properties ideally lend themselves to once-daily dosing for maintenance therapy, although, when used to treat chronic pain, methadone is generally dosed 3 times daily. When the dosage is judiciously titrated, methadone treated patients generally do not experience euphoria or sedation, nor do they suffer impairment in the ability to perform mental tasks. One of the most important advantages of methadone is that it relieves narcotic craving, which is the primary reason for relapse. Similarly, methadone blocks many of the narcotic effects of heroin,64 which helps reinforce abstinence. Once a therapeutic dose is achieved, patients frequently can be maintained for many years with the same dose.65
Mori J. Krantz, MD; Philip S. Mehler, MD, "Treating Opioid Dependence: Growing Implications for Primary Care," Archives of Internal Medicine, (Chicago, IL: American Medical Association, February 2004), Vol. 164, p. 279.
12. Undertreated Chronic Pain and Development of Substance Dependence
"In our study, there was greater evidence for an association between substance use and chronic pain among inpatients than among MMTP [Methadone Maintenance Treatment Program] patients. Among inpatients, there were significant bivariate relationships between chronic pain and pain as a reason for first using drugs, multiple drug use, and drug craving. In the multivariate analysis, only drug craving remained significantly associated with chronic pain. Not surprisingly, inpatients with pain were significantly more likely than those without pain to attribute the use of alcohol and other illicit drugs, such as cocaine and marijuana, to a need for pain control. These results suggest that chronic pain contributes to illicit drug use behavior among persons who were recently using alcohol and/or cocaine. Inpatients with chronic pain visited physicians and received legitimate pain medications no more frequently than those without pain, raising the possibility that undertreatment or inability to access appropriate medical care may be a factor in the decision to use illicit drugs for pain."
Rosenblum, Andrew, PhD, Herman Joseph, PhD, Chunki Fong, MS, Steven Kipnis, MD, Charles Cleland, PhD, Russell K. Portenoy, MD, "Prevalence and Characteristics of Chronic Pain Among Chemically Dependent Patients in Methadone Maintenance and Residential Treatment Facilities," Journal of the American Medical Association (Chicago, IL: American Medical Association, May 14, 2003), Vol. 289, No. 18, pp. 2376-2377.
13. Availability and Utilization of Medication-Assisted Treatment in Drug Courts
"Virtually all drug courts (98%) reported that at least some of their participants were opioid-dependent in 2010. Prescription opioids were more frequently cited as the primary opioid problem than heroin (66% vs. 26%). This trend is particularly apparent in less densely populated areas: prescription versus heroin rates across the three population areas were: rural (76% vs. 12%), suburban (67% vs. 33%), and urban (prescription opioids less likely to be selected than heroin as the primary opioid; 38% vs. 50%); p < .01. Almost half (48%) of the drug courts estimated that more than 20% of their participants were opioid-dependent; 20% of drug courts estimated 10–20% of their participants were addicted to opioids, and 28% of drug courts estimated that 1–10% of their participants were addicted to opioids; 2% answered, “none,” and 2% reported “don’t know.” As shown in Table 3, 56% of drug courts reported at least some of their opioid dependent participants were receiving some type of MAT, 76% of urban courts, 58% of suburban, and 45% of rural courts (p<.01). Overall, 47% report that agonist medications are available under certain conditions (62% of urban courts, 48% of suburban courts, 40% of rural courts), and 18% report that naltrexone -- oral or long-acting injectable -- is available for the treatment of opioid dependence. Buprenorphine maintenance was more likely to be reported than methadone maintenance, 40% vs. 26%, respectively. Fifty percent of drug courts also reported that at least some of their participants with an alcohol disorder were receiving MAT for alcoholism: oral naltrexone (40%), extended-release naltrexone (28%); disulfiram (43%), acamprosate (30%)."
Matusow H, Dickman SL, Rich JD, et al. Medication Assisted Treatment in US Drug Courts: Results from a Nationwide Survey of Availability, Barriers and Attitudes. Journal of substance abuse treatment. 2013;44(5):473-480. doi:10.1016/j.jsat.2012.10.004.
14. Racial, Ethnic, and Economic Discrimination In Buprenorphine Treatment for Opioid Use Disorder
"This study demonstrates that buprenorphine treatment is concentrated among white persons and those with private insurance or use self-pay. This finding in nationally representative data builds on a previous study that reported buprenorphine treatment disparities on the basis of race/ethnicity and income in New York City.2 It is unclear whether the appearance of a treatment disparity may reflect different prevalence in OUD by race/ethnicity. We did not restrict the analysis to individuals with OUD because the National Ambulatory Medical Care Survey and the National Hospital Ambulatory Medical Care Survey are unlikely to accurately capture OUD prevalence, but a recent analysis of the National Survey on Drug Use and Health suggests that the prevalence of opioid misuse is similar for black (3.5%) and white (4.7%) adults.4
"Despite the enactment of both mental health parity legislation and Medicaid expansion, the proportion of self-pay buprenorphine visits remained relatively steady across the study period.5 A recent study demonstrated that half of the physicians prescribing buprenorphine in Ohio accepted cash alone,6 and our findings suggest that this practice may be widespread and may be associated with additional financial barriers for low-income populations.
"This study provides a snapshot of the national differences in buprenorphine treatment for OUD. With rising rates of opioid overdoses, it is imperative that policy and research efforts specifically address racial/ethnic and economic differences in treatment access and engagement."
Lagisetty PA, Ross R, Bohnert A, Clay M, Maust DT. Buprenorphine Treatment Divide by Race/Ethnicity and Payment. JAMA Psychiatry. Published online May 08, 2019. doi:10.1001/jamapsychiatry.2019.0876
15. Treatment with Methadone or Buprenorphine Following Nonfatal Overdose Leads to Decreased Mortality
"In the 12 months after a nonfatal overdose, 2040 persons (11%) enrolled in MMT for a median of 5 months (interquartile range, 2 to 9 months), 3022 persons (17%) received buprenorphine for a median of 4 months (interquartile range, 2 to 8 months), and 1099 persons (6%) received naltrexone for a median of 1 month (interquartile range, 1 to 2 months). Among the entire cohort, all-cause mortality was 4.7 deaths (95% CI, 4.4 to 5.0 deaths) per 100 person-years and opioid-related mortality was 2.1 deaths (CI, 1.9 to 2.4 deaths) per 100 person-years. Compared with no MOUD, MMT was associated with decreased all-cause mortality (adjusted hazard ratio [AHR], 0.47 [CI, 0.32 to 0.71]) and opioid-related mortality (AHR, 0.41 [CI, 0.24 to 0.70]). Buprenorphine was associated with decreased all-cause mortality (AHR, 0.63 [CI, 0.46 to 0.87]) and opioid-related mortality (AHR, 0.62 [CI, 0.41 to 0.92]). No associations between naltrexone and all-cause mortality (AHR, 1.44 [CI, 0.84 to 2.46]) or opioid-related mortality (AHR, 1.42 [CI, 0.73 to 2.79]) were identified."
Larochelle MR, Bernson D, Land T, Stopka TJ, Wang N, Xuan Z, et al. Medication for Opioid Use Disorder After Nonfatal Opioid Overdose and Association With Mortality: A Cohort Study. Annals of Internal Medicine. Epub ahead of print 19 June 2018. doi: 10.7326/M17-3107.
16. Methadone-Associated Mortality
"Three primary scenarios characterize current reports of methadone-associated mortality:
Center for Substance Abuse Treatment, "Methadone-Associated Mortality: Report of a National Assessment," May 8-9, 2003, CSAT Publication No. 28-03 (Rockville, MD: Center for Substance Abuse Treatment, Substance Abuse and Mental Health Services Administration, 2004), p. 24.
17. Opioid Substitution Treatment, Treatment Programs, and Insurance Coverage
"In 2016 only 13.8 percent of substance use treatment programs accepted Medicare and offered an FDA-approved medication for opioid use disorder treatment (exhibit 1). While the percentage of programs that offered such treatment was low across all insurance types (24.8 percent among programs that accepted Medicaid and 28.6 percent among programs that accepted private insurance), access for Medicare beneficiaries was nearly twice as limited. Furthermore, just 20.8 percent of US counties—home to roughly 60 percent of the Medicare population—had at least one treatment program that accepted Medicare and offered buprenorphine or injectable naltrexone for older adults (exhibit 2). The majority of counties with at least one treatment program that accepted Medicare and offered an opioid use disorder treatment medication (65.1 percent) were in urban areas (data not shown). In 2016, 36.4 percent of treatment programs accepted Medicare, compared to 63.7 percent that accepted Medicaid and 70.3 percent that accepted private insurance. Of the treatment programs that accepted private insurance, 46.5 percent also accepted Medicare. Of those that accepted Medicaid, 52.1 percent also accepted Medicare."
Samantha J. Harris, Amanda J. Abraham, Christina M. Andrews, and Courtney R. Yarbrough. Gaps In Access To Opioid Use Disorder Treatment For Medicare Beneficiaries. Health Affairs 2020 39:2, 233-237.
18. Methadone, Pain Management, and Overdose
"The large contribution to mortality from oxycodone and methadone may be because of the long duration of action of methadone and OxyContin. Drug users may accidentally overdose by overlapping doses when the desired euphoric or analgesic effect is slow in coming. Abusers have learned to ingest and inject pulverized OxyContin pills, defeating the controlled-release mechanism and releasing dangerous amounts of the drug within a short time."
Paulozzi, Leonard J., "Opioid Analgesic Involvement in Drug Abuse Deaths in American Metropolitan," American Journal of Public Health (Vol 96, No. 10), October 2006, p. 1756.
19. Reduced Efficacy of Naltrexone (Vivitrol) Treatment
"However, one problem markedly reduces naltrexone’s efficacy and has limited its use for treating heroin and other forms of opioid dependence worldwide: patients often do not like it and do not take it on a daily basis. The dropout rate with oral naltrexone has been better in the limited number of patients in whom there is substantial external motivation to remain abstinent, such as physicians who are in monitoring programs and could lose their license if they relapse, those involved in the criminal justice system who could go to prison if they relapse, and those facing loss of employment [1•, 2–4].
"A few US studies have shown positive effects with psychosocial or behavioral therapies. In two, contingency management combined with naltrexone was helpful [5, 6]. In another, naltrexone combined with individual  and group  psychotherapy yielded positive effects. A third tested a behavioral therapy that used rewards for negative urine tests ; however, it had a relatively limited effect and was identified by Nunes et al.  as one of several examples indicating that there appears to be a ceiling effect on the degree to which behavioral interventions can be used to improve naltrexone treatment outcomes."
Krupitsky, Evgeny, Zvartau, Edwin, and Woody, George, "Use of Naltrexone to Treat Opioid Addiction in a Country in Which Methadone and Buprenorphine Are Not Available," Curr Psychiatry Rep. 2010 October; 12(5): 448–453. doi:10.1007/s11920-010-0135-5.
20. Efficacy of Extended-Release Injectable Naltrexone
"Findings from a 24-week randomized controlled trial comparing extended-release injectable naltrexone (Vivitrol, Alkermes) to placebo in individuals with current opioid dependence have been considered in the recent indication for extended-release injectable naltrexone for the treatment of opioid dependence. In this trial, subjects having completed 30-day detoxification were recruited from 13 sites in Russia received either 380 mg intramuscular injections of extended-release naltrexone (n = 126) or placebo injection (n = 124) every 4 weeks for 24 weeks. Primary outcome data of opioid abstinence, measured by urine and self-report as well as secondary data including opioid craving, dependence relapse and study retention were measured. Opioid-free weeks from week 5 to 24 were significantly different between treatment groups (P, 0.0002), with a median of 90% percent of opioid-free urines in the extended-release naltrexone group and 35% in the placebo group. Total abstinence measured as 100% opioid-free weeks in weeks 5 through 24 was 35.7% in the extended-release naltrexone group versus 22.6% in the placebo group. With extended-release naltrexone, subjects reported a 50% mean reduction in subjective craving compared with no change in craving for subjects receiving placebo, and retention in the extended-release naltrexone group was significantly longer compared to the placebo group (168 days vs. 96 days, P = 0.0042).43"
Kjome, Kimberly L. and Moeller, F. Gerard, "Long-Acting Injectable Naltrexone for the Management of Patients with Opioid Dependence," Substance Abuse: Research and Treatment 2011:5 1–9, doi: 10.4137/SART.S5452