The dried root-stock of Zingiber officinale of the East and West Indies. The active principles are an aromatic resin and a volatile oil. Ginger is a stimulant and carminative, and is given for colic or cramp. The tincture is used in doses of from ʒ ss.-i.-2-4 Gm., in hot water; the fluid extract,  v.-x.-0.3-0.65 mil.