Evion 400 capsule is a vitamin supplement. Evion 400 capsule contains vitamin E (also known as tocopherol) as its active ingredient. Vitamin E is a fat-soluble vitamin. It works as an antioxidant and protects body cells from oxidative damage. It also has a role in immune function, cellular signalling and platelet function. It is naturally found in certain food and added to others and also consumed in a form of supplements.