Diazepam is a controlled substance drug used to treat anxiety, alcohol withdrawal, muscle spasms, and You shouldn't drink alcohol or use other drugs that can also slow down your brain's activity while you're on diazepam. . lorazepam; clonazepam; alprazolam . Form: Oral tablet; Strengths: 2 mg, 5 mg, and 10 mg. Feb 14, - Ativan and Valium are drugs that belong to a class of drugs called benzodiazepines. diazepam, and other benzodiazepines like Xanax (alprazolam) or The usual oral pill diazepam dose for anxiety or seizures is 2 mg to Missing: injection. Mar 17, - In injection form, lorazepam injection is used in emergency of the oral formulations, or other benzodiazepines, including Xanax, Other benzodiazepines, such as Xanax, Librium, Librax, Klonopin,Tranxene, and Valium; Birth Lorazepam oral tablets are available in strengths of mg, 1 mg, and 2 mg.