Kirkland Signature Vitamin E 400 IU, 500 SoftgelsKirkland Signature Vitamin E 400 IU Dietary Supplement. Contributes to a Healthy Heart. Value Size. Vitamin E naturally contributes to cardiovascular health by helping to protect LDL cholesterol from oxidation which may cause cellular damage. Every Kirkland Signature product is guaranteed to meet or exceed the quality standards of the leading national brands. USP has tested and verified ingredients, potency, and manufacturing process. USP sets