Drowsiness, tiredness, headache, acne, and metallic/garlic-like taste in the mouth may occur as your body gets used to the medication. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.

How bad is Antabuse?

More severe symptoms may occur when disulfiram and large amounts of alcohol are used together, such as severe chest pain spreading to your jaw or shoulder, slow heart rate, weak pulse, seizure, fainting, weak or shallow breathing, or slow breathing (breathing may stop). A disulfiram-alcohol reaction can be fatal.

Do Antabuse side effects go away?

Side effects not requiring immediate medical attention

Some side effects of disulfiram may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine.