The danger of a disulfiram reaction depends on the sensitivity of the individual and the amount of alcohol ingested. The more alcohol consumed, the more sensitive the individual is to alcohol and the stronger the patient’s reaction. The effects of disulfiram on the human body are as follows: 1. Disulfiram reactions are usually not fatal and can be quickly relieved with treatment; 2. If the patient has a combination of underlying heart and lung diseases, the occurrence of a disulfiram reaction may lead to serious consequences. The disulfiram reaction can also occur when alcohol is taken without the drug being fully metabolized. Therefore, it is recommended to avoid contact with alcohol within 2-3 weeks of taking the medication in question.