21st Century Vitamin E-400 is a dietary supplement containing 400 IU of Vitamin E per softgel. This supplement comes in a bottle of 33 capsules and is designed to support heart health and boost immune system function through its antioxidant properties. The product comes in an easy-to-identify white bottle with a green cap and clear labeling. The softgel format helps with optimal absorption since Vitamin E is fat-soluble. As a dietary supplement, Vitamin E functions as an antioxidant that helps protect cells from oxidative stress. The package indicates it provides natural support for heart health and immune system function.