Do not use opioid medication, heroin, or other street drugs while you are receiving naltrexone. Once naltrexone is injected, it cannot be removed from your body. Never try to overcome the effects of naltrexone by taking large doses of opioids. Doing so could result in dangerous effects, including coma and death.
Ask your doctor before using any medicine to treat a cold, cough, diarrhea, or pain. These medicines may contain opioids and may not work as well while you are using this medicine.
Avoid driving or hazardous activity until you know how this medicine will affect you. Dizziness or drowsiness can cause falls, accidents, or severe injuries.
