Reactions to Naltrexone

Naltrexone is an opioid receptor antagonist used primarily to treat alcohol and opiate addiction. It is sold as naltrexone hydrochloride and is marketed under the names Revia, Depade and Vivitrol.

Possible Allergic Reactions

• If you have any of the following reactions, seek emergency medical help immediately: hives, trouble breathing or swelling of the face, lips, tongue or throat.

Serious Side Effects

• Naltrexone's less common, more serious side effects include blurred vision, fast heartbeat, visual or aural hallucinations, confusion, sudden mood swings, thoughts of suicide or self-harm, nausea, stomach pain, fever, appetite loss, very dark urine, jaundice, clay-colored stools, ear pain or ringing of the ears, skin rash or itching, or difficulty breathing. Discontinue use and call your doctor if any of these side effects occur.

Minor Side Effects

• Less extreme side effects include feelings of anxiety or irritability, aching muscles or joints, feelings of thirst, feeling light-headed, weakness or exhaustion, insomnia, reduced sex drive or difficulty achieving an orgasm.