Before taking naltrexone,
tell your doctor and pharmacist if you are allergic to naltrexone
, other narcotics, or any other drugs.
tell your doctor and
pharmacist what prescription and
nonprescription medications you are taking, especially anti-diarrhea drugs, medications for cough and colds, pain medication, and vitamins.
tell your doctor if you have either of the conditions listed in the IMPORTANT WARNING section.