Jiaogulan found to improve endurance.

Li ChangJun; Wu XiaoLan; Lou XiaoJuan; Wu YaJun; Li Ang; Wang HaiYan. Protective effects of crude polysaccharide from Gynostemma pentaphyllum on swimming exercise-induced oxidative stress in rat. Journal Journal of Animal and Veterinary Advances 2012 Vol. 11 No. 10

In this study, the test subjects (rats) were fed Jiaogulan for 30 days and subjected to a swimming endurance test. Those subjects given Jiaogulan showed significantly longer swim times and, based on liver glycogen measurements after the swim, were likely to recover faster. This research suggests that Jiaogulan may be beneficial to athletes hoping to improve endurance and excercise recoevery.

Jiaogulan is found to resist immune suppression and restore healthy immune systems

Restoration of Electric Footshock-Induced Immunosuppression in Mice by Gynostemma pentaphyllum Components
Sun-A Im, Hyun Sook Choi, Soon Ok Choi, Ki-Hyang Kim, Seungjeong Lee, Bang Yeon Hwang, Myung Koo Lee and Chong Kil Lee*
College of Pharmacy, Chungbuk National University, Cheongju 361-763, Korea
25 June 2012, Molecule

In this study Korean researchers suppressed the immune system of mice using electro-shock. Those animals that had been fed Jiaogulan for one week before the electro-shock did not develop suppressed immune systems while the subjects not receiving Gynostemma did. In a follow up, 1/2 the mice with suppressed immune systems were subsequently fed Jiaogulan and showed faster recovery of their immune systems than the group not receiving Jiaogulan.

Gynostemma Found to Lower Cholesterol and Reduce Liver Damage

R. Qin et al.Protective effects of gypenosides against fatty liver disease induced by high fat and cholesterol diet and alcohol in rats. Archives of Pharmacal Research, Volume 35, number 7 2012

Chinese researchers fed a high fat, high cholesterol diet to rats and caused them to ingest alchohol daily. They kept left one group untreated, gave two groups popular anti-cholesterol medications and gave 3 remaining groups varying dosages of Gynostemma. After 10 weeks, the groups given Gynostemma showed significantly lower LDL-cholesterol and triglycerides. Furthermore test for liver health showed the Gynostemma group also maintained better liver health. The researchers concluded, “These results suggested that gypenosides could prevent liver fatty degeneration in fatty liver disease through modulating lipid metabolism, ameliorating liver dysfunction and reducing oxidative stress. “