Tocotrienols are a group of chemicals that are part of the vitamin E family. Tocotrienol is any of the four forms, alpha, beta, gamma and delta, of a member of the vitamin E family. It has potential hypocholesterolemic, antithrombotic, antioxidant, immunomodulating and antineoplastic activities. Tocotrienol inhibits the activity of 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase, thereby lowering cholesterol levels. In addition, tocotrienol acts through multiple signal transduction pathways to induce cell cycle arrest and caspase-mediated apoptosis, and to decrease tumor cell proliferation. In addition, this agent may inhibit angiogenesis through the blockage of vascular endothelial growth factor receptor (VEGFR) and the subsequent inhibition of tumor cell-induced vessel formation. Also, this agent prevents free radical formation and inhibits lipid peroxidation, thereby preventing DNA cell damage. Tocotrienols are scare in nature. They are found most abundantly in crude palm oil extracted from palm fruits. Other sources are rice bran, wheat germ, oat and barley. These substances are available in supplement form as capsules or pills.