Allicin is an organosulfur compound obtained from garlic, a species in the family Alliaceae.[1] It was first isolated and studied in the laboratory by Chester J. Cavallito and John Hays Bailey in 1944.[2][3] When fresh garlic is chopped or crushed, the enzyme alliinase converts alliin into allicin, which is responsible for the aroma of fresh garlic.[4] The allicin generated is very unstable and quickly changes into a series of other sulfur containing compounds such as diallyl disulfide.[5] It exhibits antibacterial, antifungal, antiviral, and antiprotozoal activity.[6] Allicin is garlic's defense mechanism against attacks by pests