Disulfiram should be avoided with which everyday product due to potential alcohol content?

• A. Toothpaste
• B. Mouthwash
• C. Shampoo
• D. Soap

Answer: (B)

Disulfiram blocks the body's ability to metabolize alcohol, so even small amounts of ethanol can trigger a buildup of acetaldehyde, leading to symptoms like flushing, nausea, palpitations, and dizziness. Because many mouthwashes contain ethanol as a solvent, using an alcohol-containing rinse can provoke this reaction in someone taking disulfiram. That makes mouthwash the product to avoid.

Toilette and hygiene items such as toothpaste, shampoo, and soap typically do not contain enough alcohol to cause the reaction, so they’re generally considered safe alternatives. If ever in doubt, choose an alcohol-free mouthwash and check labels for alcohol content.