Clorazepate is used to relieve anxiety. Clorazepate is also used along with other medications to treat certain types of seizures. It is also used to relieve unpleasant symptoms that may be experienced by people who have stopped drinking alcohol after drinking large amounts for a long time. Clorazepate is in a class of medications called benzodiazepines. It works by decreasing abnormal electrical activity in the brain.