- The rhizome and roots of Valeriana officinalis (family Valerianaceae), a herb native to southern Europe and northern Asia, cultivated also in the U.K. and the U.S.; has been used as a sedative in hysteria and at menopause.
- Referring to a class of terpene alkaloids obtained from valerian (1).
Synonym(s): vandal root
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Examples: glitazone, GI cocktail, etc.