<p><em><strong>Eleutherococcus</strong></em> is a genus of 38 species of thorny shrubs and trees in the family Araliaceae. They are native to eastern Asia, from southeast [[Siberia ]] and Japan south to the Philippines, with the greatest diversity in central and western China. Some species, notably <em>E. senticosus</em> (Siberian ginseng), are used for herbal medicine. Several species are also grown as ornamental garden shrubs.</p><p>Also notable, traces of Eleutherococcus (Siberian Ginseng) are used in the popular energy drink Rockstar.<br /><br /></p>