Treatment & Safety
Naltrexone Contraindications: Opioids, Withdrawal, and Label Checks
Current opioid use, opioid dependence, acute withdrawal, specified test results, and prior hypersensitivity can make naltrexone unsafe to start.
4 minute read
Independent health research editors
Get Naltrexone Editorial Team
Get Naltrexone is an independent educational resource. Its editors compare primary research with official labels, guidelines, registers, funding schedules, and price records. They name the exact product, date facts that can change, and explain uncertainty in plain language. No clinician review is claimed unless a named, qualified reviewer appears on the page.
Articles by Get Naltrexone Editorial Team
Treatment & Safety
Starting Naltrexone After Opioids: Why the Opioid-Free Interval Matters
Naltrexone can trigger severe withdrawal if opioids are still present. The minimum interval is not a self-assessment rule and may be longer after buprenorphine or methadone.
4 minute read
Treatment & Safety
Naltrexone Side Effects: Expected Effects and Urgent Safety Signals
Nausea, headache, dizziness, and tiredness are reported with naltrexone. Vivitrol also has injection-site effects; certain symptoms need prompt clinical review.
4 minute read
Treatment & Safety
Vivitrol Injection Administration: What Patients Should Know
Vivitrol is prepared and given only by a healthcare provider as a deep gluteal injection. This guide explains the patient-facing safety essentials.
4 minute read
Access by Country
Australia Naltrexone PBS Check: Item 8370M and 2026 Co-payments
PBS item 8370M covers naltrexone 50 mg tablets; 2026 maximum co-payments are $25 general and $7.70 concession.
2 minute read
Treatment & Safety
Naltrexone and Liver Disease: What Current Evidence Shows
Observational studies are reassuring in many patients with liver disease and cirrhosis, but they do not make naltrexone risk-free or settle every decompensated-liver scenario.
3 minute read
Access by Country
New Zealand Naltrexone Funding: June 2026 PHARMAC Check
Naltraccord 50 mg is fully subsidised under SA1408, while pharmacy charges and GP fees remain separate.
2 minute read
Treatment & Safety
Naltrexone During Pregnancy and Breastfeeding: What We Know
Human pregnancy evidence remains limited; breastfeeding transfer appears low in one published case. Decisions require individual specialist assessment.
3 minute read
Access by Country
Singapore Naltrexone Check: Contrave Is Registered—What About 50 mg?
Singapore's official formulary confirms Contrave, while current standalone 50 mg naltrexone supply and price remain unverified.
2 minute read
Access by Country
UAE Naltrexone Registry Check: What Is Actually Listed?
A dated check of the UAE drug directory: Contrave is active, standalone naltrexone was not found, and DHA guidance still recognises naltrexone clinically.
2 minute read
Treatment Evidence
Naltrexone vs Acamprosate and Disulfiram
Naltrexone, acamprosate, and disulfiram have different goals, contraindications, and evidence. There is no universal best medicine.
3 minute read
Treatment Evidence
Does Naltrexone Help With Weight Loss? Contrave Evidence
Standalone naltrexone is not an approved weight-management medicine. This evidence review examines Contrave—the naltrexone-bupropion combination—alongside its safety limits.
4 minute read
Treatment Evidence
Targeted Naltrexone in Asia-Pacific: What Access Evidence Shows
Targeted naltrexone has trial evidence, but local access depends first on whether standalone naltrexone is marketed and whether a clinician supports the protocol.
3 minute read