Terry Naturally Clinical OPC Antioxidant - Extra Strength 400 mg - Heart…

Our verdict

Terry Naturally Clinical OPC Antioxidant - Extra Strength 400 mg… works out to $0.82 per serving of grape seed extract, at 400mg per serving in softgel form. That puts it above the median of the 38 grape seed extract products we can price per dose, where the typical serving costs $0.12, a Value Index of 0.2 where the median product is 1.0. One container lasts 60 days at the label dose of 1 serving a day, about $24.63 a month. We could not verify a third-party certification for Terry Naturally in a public registry. Worked out from the current retail price as of 2026-11-13; confirm the live price on Amazon.com before buying.