Hydroxy-β-sanshool extracted from the herbal medicine Dai-Kenchu-to contracts the ileal and colonic muscle as well as relaxes the gastric muscle in the guinea pig - Kurosawa,S.; Nishikawa,S.; Kaneko,M.; Ogiwara,S.; Ro,S.; Nakamura,T.; Saito,K.; Hashimoto,K.; Kase,Y.; Ishige,A. (Gastroenterology, 1999)