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Compare supplements

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

Supplement 1Supplement 2Supplement 3

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Evidence

Limited evidence

Common protocol120–240 mg/day standardized leaf extract——

Protocols mapped

1 goal-specific

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Timing

With food, usually divided

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Expected effect

Study-specific; commonly several weeks

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Primary uses

Dementia-symptom researchCognition researchCirculation claims

Watch for

Headache · Dizziness

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