Solgar´s Garlic Powder is produced from garlic bulbs that are grown without the use of artificial pesticides and fertilizers and are certified by Quality Assurance International to be in accordance with their standards. Each vegetable capsule provides Garlic Clove (Allium sativum) powder 500mg. Certified to contain a minimum of these important constituents: Per vegetable capsules (1 gram):Allicin yield 1500ug, Thiosulfinates 1600ug, Alliin 10, 000ug, Gamma-glutamylcysteines 16,000ug. No Excipients. DirectionsAs a food supplement for adults, 1 or 2 vegetable capsules daily, preferably at mealtime, or as directed by a healthcare practitioner. Solgar Certified Organic Garlic vegetable capsule shell: hydroxypropylmethyl cellulose.