Like other benzodiazepines, it is used as a sedative in the treatment of anxiety, in psychoneurotic disorders and acute alcohol withdrawal.
It can be used as a preanesthetic medication, as a hypnotic, and for long-term sedation in intensive care.
It also has anticonvulsive properties and can be used in the treatment of status epilepticus.
Diazepam and its metabolites have a fairly long half-life compared to other benzodiazepines, about 100-200 hours. Longer half-life is associated with less risk of withdrawal and dependency, but also means that a dose taken for its hypnotic effect in the evening will still be active the following day.
Much more writing desirable: pharmacology, misuse potential