What is the recommended internal dosage of garlic?

Raw or cooked, tablets, capsules, tincture or syrup. Fresh garlic: 1 to 3 cloves daily. Tincture: 2 - 4 ml or 15 - 40 drops, twice daily. Syrup: 1 tbsp, 3 times daily. Capsules: 400 - 500 mg of allicin, twice daily, and more . . .