Semen Trichosanthis. Part used: Seed. Known as Snakegourd Seed. Entering meridians: Lung, Stomach and Large Intestine. Gua Lou Ren clears heats and transforms hot phlegm, expands the chest, moistens the intestines, promotes bowel movements, promotes healing of sores and promotes urination. All Phoenix Medical dry authentic herbs and concentrated herbal granules are free of sulphur, herbicides and pesticides.