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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 protocol1–3 g/day L-carnitine in many trials——

Protocols mapped

1 goal-specific

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Timing

With a carbohydrate-containing meal if tolerated

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Expected effect

Study-specific; commonly several weeks

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Primary uses

Carnitine deficiencyExercise recovery researchWeight-loss research

Watch for

Nausea · Diarrhea

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