Each capsule provides 100 mg of **grape seed extract** standardized to 90% polyphenols, alongside 320 mg of **vitamin C** as ascorbic acid. Grape seed polyphenols have moderate clinical evidence for reducing blood pressure by roughly 6 mmHg systolic and lowering markers of oxidative stress. At two capsules daily, you get 200 mg — squarely within the 150–300 mg range used in most published trials.

The 320 mg of **vitamin C** per capsule is a meaningful dose on its own — well above the RDA and enough to support your immune system and collagen production. At two capsules daily (640 mg total), you're in a range supported by research for antioxidant protection without hitting the absorption ceiling that kicks in above 1,000 mg.

The combination works well: both grape seed polyphenols and vitamin C act as antioxidants, but through different mechanisms and in different parts of your cells, giving you broader coverage. If your main goal is cardiovascular support or general antioxidant defense, the doses here are well-positioned.