Eleutherococcus senticosus is a species of small, woody shrub in the family Araliaceae native to Northeastern Asia. It is often colloquially referred to as Siberian ginseng, eleuthero or ciwujia. E. senticosus has a history of use in traditional Chinese medicine where it is known as cì wǔ jiā (刺五加). In regard to the species's scientific name, Eleutherococcus (from Greek) means "free-berried," and senticosus, from the Latin word sentis (thorn-bush, briar) is an adjective meaning "thorny" or "full of briers or thorns."