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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 protocol250–900 mg/day across short human trials——

Protocols mapped

1 goal-specific

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Timing

Morning or any consistent daytime schedule

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Expected effect

Study-specific; commonly several weeks

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Primary uses

NAD+ biomarker researchMetabolic researchHealthy-aging claims

Watch for

Short trials report few adverse events · Long-term safety remains uncertain

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