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Methadone Solution and Nizoral

Determining the interaction of Methadone Solution and Nizoral and the possibility of their joint administration.

Check result:
Methadone Solution <> Nizoral
Relevance: 10.07.2022 Reviewer: Shkutko P.M., M.D., in

In the database of official manuals used in the service creation an interaction registered by statistical results of studies was found, which can either lead to negative consequences for the patient health or strengthen a mutual positive effect. A doctor should be consulted to address the issue of joint drug administration.

Consumer:

Using methadone together with ketoconazole is not recommended. Combining these medications can significantly increase the blood levels of methadone. This can increase the risk of serious and potentially life-threatening side effects such as respiratory depression, low blood pressure, irregular heart rhythm, fainting, coma, and even death. Talk to your doctor or pharmacist if you have any questions or concerns. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Professional:

CONTRAINDICATED: Coadministration with potent inhibitors of CYP450 3A4 such as ketoconazole may significantly increase the plasma concentrations of methadone, which is primarily metabolized by the isoenzyme. High dosages and plasma levels of methadone have been associated with QT interval prolongation and torsade de pointes arrhythmia. Ketoconazole itself can also prolong the QT interval, thus an additive pharmacodynamic effect with methadone may occur as well.

MANAGEMENT: Coadministration of methadone with ketoconazole is considered contraindicated.

References
  • Martell BA, Arnsten JH, Krantz MJ, Gourevitch MN "Impact of methadone treatment on cardiac repolarization and conduction in opioid users." Am J Cardiol 95 (2005): 915-8
  • Sala M, Anguera I, Cervantes M "Torsade de pointes due to methadone." Ann Intern Med 139 (2003): W64
  • "Product Information. Nizoral (ketoconazole)." Janssen Pharmaceutica, Titusville, NJ. (1992):
  • De Bels D, Staroukine M, Devriendt J "Torsades de pointes due to methadone." Ann Intern Med 139 (2003): E156
  • Krantz MJ, Kutinsky IB, Robertson AD, Mehler PS "Dose-related effects of methadone on QT prolongation in a series of patients with torsade de pointes." Pharmacotherapy 23 (2003): 802-5
  • Krantz MJ, Lewkowiez L, Hays H, et al "Torsade de pointes associated with very-high-dose methadone." Ann Intern Med 137 (2002): 501-4
  • Gil M, Sala M, Anguera I, et al. "QT prolongation and Torsades de Pointes in patients infected with human immunodeficiency virus and treated with methadone." Am J Cardiol 92 (2003): 995-7
  • Krantz MJ, Mehler PS "Synthetic opioids and QT prolongation." Arch Intern Med 163 (2003): 1615; author reply 1615
  • Walker PW, Klein D, Kasza L "High dose methadone and ventricular arrhythmias: a report of three cases." Pain 103 (2003): 321-4
  • Mokwe EO, Ositadinma O "Torsade de pointes due to methadone." Ann Intern Med 139 (2003): W64
  • Ehret GB, Desmeules JA, Broers B "Methadone-associated long QT syndrome: improving pharmacotherapy for dependence on illegal opioids and lessons learned for pharmacology." Expert Opin Drug Saf 6 (2007): 289-303
Methadone Solution

Generic Name: methadone

Brand name: Dolophine, Methadose, Methadose Sugar-Free, Diskets

Synonyms: Methadone

Nizoral

Generic Name: ketoconazole

Brand name: Nizoral

Synonyms: n.a.

In the course of checking the drug compatibility and interactions, data from the following reference sources was used: Drugs.com, Rxlist.com, Webmd.com, Medscape.com.

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