Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Before taking disulfiram, tell your doctor or pharmacist if you are allergic to it; or to thiuram or thiuram-related chemicals (found in pesticides and rubber); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: heart/blood vessel disease (such as coronary artery disease), mental/mood disorders, diabetes, underactive thyroid (hypothyroidism), brain disorders (such as seizures, brain damage), kidney disease, liver disease, personal or family history of regular use/abuse of drugs.

Avoid all alcoholic beverages or alcohol-containing products/foods (such as cough and cold syrups, mouthwash, aftershave, sauces, vinegars) while taking this medication and for 2 weeks after stopping the medication. Check all product labels carefully to make sure that there is no alcohol in the product. Using alcohol, even a small amount, while taking this medication can lead to a reaction that may include flushing, throbbing headache, breathing problems (such as shortness of breath, fast breathing), nausea, vomiting, dizziness, extreme tiredness, fainting, fast/irregular heartbeat, or blurred vision. These symptoms can last from 30 minutes to several hours. Tell your doctor right away if these symptoms occur, especially if they last or get worse.

A more serious reaction with this medication and alcohol may include trouble breathing, seizures, loss of consciousness, chest/jaw/left arm pain. Get medical help right away if you have these symptoms.

During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.

It is unknown if this drug passes into breast milk. Consult your doctor before breastfeeding.