Grapefruit Seed is rich in free-radical eliminating antioxidants called bioflavonoids that abutment intestinal health and care for against intestinal parasites. One of these bioflavonoids called hesperidin is well-known for its abilities to stimulate and boost immune system functions. Studies on Grapefruit Seed suggest its capability against numerous disease-causing microorganisms. visit us http://www.tasmanhealth.co.nz/natures-way-grapefru it-seed/ for more details!!