Diallyl trisulfide is an organic trisulfide that is trisulfane in which both of the hydrogens are replaced by allyl groups. A component of the essential oil of garlic and a major component of the traditional Chinese medicine allitridium, it exhibits antifungal, antitumour and antioxidant activity It has a role as an apoptosis inducer, an estrogen receptor antagonist, an antineoplastic agent, a vasodilator agent, an antioxidant, an anti-inflammatory agent, an insecticide, an antiprotozoal drug, a platelet aggregation inhibitor and an antilipemic drug.