Get Valium online Diazepam is a generic, Valium-branded drug. It is used for anxiety relief, and is known as benzodiazepine. This class of drugs also includes alprazolam, which is Xanax, clonazepam or Klonopin, and lorazepam, which is Ativan's brand name. In addition to being used to treat anxiety disorders, diazepam may also be prescribed for treating alcohol withdrawal related tremors, seizures and delirium.