It is not entirely clear what to expect from an overdose with naltrexone. An overdose may cause symptoms such as nausea, abdominal (stomach) pain, drowsiness, and dizziness. Seek immediate medical attention if you or someone else may have taken too much naltrexone.
Naltrexone should be stored at room temperature in a tightly sealed container. Keep this and all other medications out of the reach of children and pets.
What Should I Do If I Miss a Dose?
If you forget a dose, take it as soon as you remember, unless it is almost time for the next dose. In this case, simply skip the missed dose and continue with your regular schedule. Do not take a double dose.
Is There a Generic Version?
This medication is available in generic form (see Generic Revia).
Who Makes Naltrexone?
Brand-name naltrexone (sold under the name Revia) is made by Duramed Pharmaceuticals, Inc. Generic forms are made by a few different companies.
Naltrexone tablets are available in one strength: Naltrexone 50 mg.
Naltrexone. Drug Facts and Comparisons. Drug Facts and Comparisons 4.0 [online]. 2012. Available from Wolters Kluwer Health, Inc. Accessed January 9, 2013.
Food and Drug Administration, Center for Drug Evaluation and Research. Electronic orange book: approved drug products with therapeutic equivalence evaluations. FDA Web site. Available at: http://www.fda.gov/cder/ob/. Accessed January 9, 2013.
National Library of Medicine (US). Drugs and Lactation Database (LactMED). NLM Web site. Available at: http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?LACT. Accessed January 9, 2013.
Briggs GG, Freeman RK, Yaffe SJ. Drugs in Pregnancy and Lactation. 8th ed. Philadelphia (PA): Lippincott Williams & Wilkins;2008.
National Library of Medicine (US). Hazardous Substances Data Bank (HSDB). NLM Web site. Available at: http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?HSDB. Accessed January 9, 2013.
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