Cardiovascular

Grape Seed Extract

Also known as: OPC, Proanthocyanidins

Evidence

Rich in OPCs for vascular health. Strengthens capillaries and supports circulation.

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Primary uses

Vascular health
Circulation
Antioxidant
Blood pressure

How it works

Strengthens capillaries
Potent antioxidant
Supports endothelial function

Dosage

Typical range: 100-300mg standardized extract
Timing: Any time
With food: Optional
Duration: Ongoing
Special populations: Circulation, venous insufficiency, eye health

Forms

Standardized extract

Safety

Common side effects

Rare

Contraindications

None

Products containing Grape Seed Extract

Top-scoring supplements in our catalog that list Grape Seed Extract on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.

Thorne

Berberine

Thorne

MediClear-SGS™ - Vanilla

Thorne

MediClear Plus®

Thorne

MediClear-SGS™ - Chocolate

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Evidence notes

OPC-rich vascular support

Grade B: Some human trials support key claims; further confirmation needed.

Related in Cardiovascular

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider.