The following doses are recommended: 2 to 5 g of fresh raw garlic; 0.4 to 1.2 g of dried garlic powder; 2 to 5 mg garlic oil; 300 to 1,000 mg of garlic extract (as solid material). Other preparations should correspond to 4 to 12 mg of alliin or approximately 2 to 5 mg of allicin, an active constituent of garlic.