Evidstack comparisons

L-Arginine vs L-Citrulline: Exercise performance

Compare the recorded human exercise evidence for two amino acids. A plausible biological pathway does not establish a performance benefit.

Separate studies, not a head-to-head trial. Source-checked conclusions do not validate older numerical estimates.

L-Arginine

Exercise performance

Source-checked conclusion: uncertain

Research offers little support for improving exercise performance.

Limited, conflicting trials.

Population: Adults in exercise studies. Formulation: Arginine.

AI-assisted source check dated 2026-09-30. Selected effect only.

Read L-Arginine profile, recorded doses, risks and available costs

L-Citrulline

Exercise performance

Source-checked conclusion: uncertain

A reliable performance benefit has not been established.

Few, conflicting trials.

Population: Adults in exercise studies. Formulation: Citrulline.

AI-assisted source check dated 2026-09-30. Selected effect only.

Read L-Citrulline profile, recorded doses, risks and available costs

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Evidence method and limits