Do not drink alcohol while taking diazepam. This medication can increase the effects of alcohol. Diazepam can cause side effects that may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be awake and alert.
Avoid using other medicines that make you sleepy (such as cold medicine, pain medication, muscle relaxers, and medicine for seizures, depression or anxiety). They can increase some of the side effects of diazepam.