Diazepam is a prescription medicine that is used to treat anxiety, alcohol withdrawal, and some other conditions. Diazepam belongs to a group of drugs called benzodiazepines. It reduces anxiety and tension and can help you relax. <br> <br>Diazepam is a white or almost white crystalline powder, which is odorless with a slightly bitter taste. It is practically insoluble in water, freely soluble in ethanol and in pyridine, and soluble in chloroform and ethyl acetate