(Mountain Naturals) Mountain Natural’s Grape Seed Extract is one of nature’s most potent antioxidants. It is 50 times stronger than vitamin E and is 20 times stronger than vitamin C in protection from free radical destruction. Grape seed contains an extremely potent substance that has been found to help maintain healthy circulation and blood vessel health. It helps in the building of collagen (keeps veins flexible) and also aids in blood flow to your eyes to help your macula. If blood pressure or cholesterol are worries for you, consider Grape Seed Extract. Suggested Use: As a dietary supplement, take two capsules with breakfast and two capsules with lunch.