Alternatives to Naltrexone for Opioid Use Disorder

Primary Alternatives for Opioid Use Disorder

The Centers for Disease Control and Prevention recommends buprenorphine or methadone maintenance therapy combined with behavioral interventions as first-line alternatives to naltrexone for patients with opioid use disorder, as these medications demonstrate superior retention and outcomes compared to naltrexone 1, 2
Buprenorphine is the most accessible alternative for office-based treatment, as physicians can obtain a SAMHSA waiver to prescribe it without requiring specialized clinic enrollment 1
The American College of Obstetricians and Gynecologists recommends buprenorphine (without naloxone) for pregnant women with opioid use disorder, as it has been associated with improved maternal outcomes 1
Methadone maintenance therapy requires enrollment in a SAMHSA-certified opioid treatment program with supervised dosing and provides full mu-opioid agonist activity, effectively preventing withdrawal and reducing cravings 1
The Substance Abuse and Mental Health Services Administration suggests methadone maintenance therapy is particularly beneficial for patients who have failed office-based buprenorphine treatment or require more intensive monitoring 1

The National Comprehensive Cancer Network recommends peripherally-acting mu-opioid receptor antagonists, such as methylnaltrexone, naloxegol, and naldemedine, as preferred alternatives for managing opioid-induced constipation in patients with chronic noncancer pain 4, 5
The British Association of Dermatologists suggests methylnaltrexone as the first-choice alternative for managing opioid-induced pruritus when opioid cessation is not possible 6

The Centers for Disease Control and Prevention advises that patients must be completely opioid-free for 7-10 days before starting naltrexone to avoid precipitating withdrawal 1, 2
The Mayo Clinic recommends that if switching from naltrexone to buprenorphine or methadone, oral naltrexone should be discontinued 3-4 days prior; intramuscular naltrexone requires 24-30 days after the last injection 3
The World Health Organization notes that patients discontinuing naltrexone face significantly increased overdose risk due to decreased opioid tolerance and should receive naloxone and overdose education 1, 2

The American Medical Association suggests that naltrexone works best only in highly motivated patients, such as healthcare professionals or those with strong social support 1, 2
The American Society of Addiction Medicine advises that naltrexone cannot be used in patients requiring opioid analgesics for pain management, as it blocks therapeutic opioid effects 2

The Substance Abuse and Mental Health Services Administration requires ongoing monitoring for diversion risk and treatment adherence for patients on buprenorphine and methadone 1
The Centers for Disease Control and Prevention notes that buprenorphine providers need DATA 2000 waiver certification, though this requirement has been simplified in recent years 1

The American Medical Association advises that patients with substance use disorder should not be dismissed from practice, as this represents patient abandonment and compromises safety 1
The National Institute on Drug Abuse recommends avoiding "cold referrals" to specialists who have not agreed to accept the patient; arrange coordinated transitions of care 1, 2
The American Association for the Study of Liver Diseases suggests monitoring liver function tests at baseline and every 3-6 months for patients with hepatic impairment on any opioid antagonist therapy 2, 7