Vitamin E is a fat-soluble vitamin consisting of 8 different vitamers. Four of the vitamers are tocopherols and 4 are tocotrienols.
The principal function of vitamin E is as an antioxidant to prevent peroxidation of unsaturated fatty acids within the cell membrane. It also protects vitamin A and can increase its storage. Once oxidised, vitamin E can itself be regenerated by vitamin C.
Low levels are associated with muscle pain and weakness, numbness and tingling, vision problems, coordination problems, poor immunity.