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Put up to three ingredients next to each other. See where the evidence, dosing, timing, and tradeoffs differ.

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Evidence

Limited evidence

Common protocol150–300 mg/day standardized grape-seed extract——

Protocols mapped

1 goal-specific

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Timing

With food

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Expected effect

Study-specific; commonly several weeks

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Primary uses

Blood-pressure researchVascular researchPolyphenol intake

Watch for

Headache · Nausea

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