Benzoin is the dried resin collected from the trunk of Styrax tonkinensis (Pierre) Craib ex Hart. (Fam.Styracaceae).

Action: To restore consciousness, to activate the flow of qi and blood, and to relieve pain.

Indications: Loss of consciousness in stroke and attack of noxious factors, syncope due to violent excitement or postpartem anemia; pain in the chest and epigastrium; infantile convulsion.

Usage: Mostly used in making pills or powder.