Disulfiram is a medicine for people who have trouble with drinking too much. When someone takes disulfiram and then drinks alcohol, it makes them feel really sick with things like nausea, throwing up, and a bad headache. This makes them not want to drink alcohol.
The National Institute on Alcohol Abuse and Alcoholism (NIAAA) says that using disulfiram can make it 50% less likely for someone to start drinking again after they’ve tried to stop.