The relationship between methadone dosage and plasma level changes with aging in methadone maintenance treatment (MMT) patients.  Sason A, Adelson M, Schreiber S, Peles E.  Subst Abuse Treat Prev Policy. 2026 Feb 19;21(1):17. doi: 10.118…

Investigating Changes in Liver Enzyme Levels in Patients With Acute Methadone Poisoning.  Mousavi SR, Ivari MA, Khazaei AR, Gharibi S, Vakili V, Rozmina S, Mousavi SA, Rafati SS.  J Toxicol. 2026 Feb 27;2026:6159057. doi: 10.1155/jt/6159…

Population-Level Health Benefits and Harms Associated With Buprenorphine/Naloxone vs Methadone.  Enns B, Guerra-Alejos BC, Min JE, Carter A, Siebert U, Nosyk B.  JAMA Netw Open. 2025 Dec 1;8(12):e2551337. doi: 10.1001/jamanetworkopen.202…

Switching to levomethadone improves methadone-induced hyperhidrosis: A case report.  Serfilippi T, Piccirillo S, Romagnoli F, Tarini M, Lariccia V, Magi S.  J Addict Dis. 2026 Jan-Mar;44(1):101-105. doi: 10.1080/10550887.2024.2443696. Ep…

Quality of Sleep and Related Factors in Individuals Undergoing Methadone Maintenance Treatment.  Shamspoor M, Aminaie M, Raaii F, Alidad Parizi M, Jahanbakhsh F.  Addict Health. 2025 Jan;17:1548. doi: 10.34172/ahj.1548. Epub 2025 Sep 15…

Rapid Methadone Metabolism in Opioid Use Disorder: A Case Report of Clinical Challenges and Individualized Treatment Approaches.  Nazmin F, Singh J, Joshaghani N, Go E.  Reports (MDPI). 2025 Dec 12;8(4):262. doi: 10.3390/reports8040262…