Effects of polysaccharides from Gynostemma pentaphyllum (Thunb.), Makino on physical fatigue.

Background: Gynostemma pentaphyllum (Thunb.) Makino has been reported to have a wide range of health benefits in Chinese herbal medicines. Polysaccharides from Gynostemma pentaphyllum (PGP), has been identified as one of the active ingredients responsible for its biological activities.