Kyolic Premium Aged Garlic Extract Tablets, 1000 mg. Organically grown garlic is transformed via a unique 20 month cold-ageing process which triggers a complex series of biological reactions. For example, alliin, the inactive sulphur-containing compound found intact in garlic bulbs, is converted to compounds including s-allyl cysteine (SAC) - confirmed by scientists to be effective, safe and stable. As part of a healthy diet and lifestyle, garlic could help support the immune system, and may assist in maintaining a healthy heart and circulation.