valerian, a perennial herb native to Eurasia that is now grown worldwide. ▪ INDICATIONS: This herb is used as a sedative, and is generally considered safe and effective for short-term use. ▪ CONTRAINDICATIONS: Valerian should not be used during pregnancy and lactation, in those with known hypersensitivity to this herb, or in those with hepatic disease. It should be used only with caution in children, as research is lacking.