The root of an herb native to the Old World, of which the tincture and fluid extract are most used. It is a mild nervous stimulant and antispasmodic (composing agent). In hysterical cases, and in some cases of delirium tremens, it is very serviceable. Dose of the tincture, a teaspoon-ful; of the fluid extract, the same; either being diluted with water when taken.

Valerianate or Ammonia is often given, in the form of an elixir, in teaspoonful doses, to promote sleep in cases of restlessness at night. Valerianate of zinc is a nerve-tonic ; sometimes prescribed by physicians, in one-grain doses, for epilepsy.