Affiliate disclosure: links may earn us a commission at no extra cost to you.
L-Citrulline is a non-essential amino acid that the body converts to L-arginine, the direct precursor to nitric oxide. Counterintuitively, supplemental citrulline raises plasma arginine levels more effectively than arginine itself, because it bypasses first-pass metabolism in the gut and liver. The malate form pairs citrulline with malic acid, which supports the Krebs cycle and may further enhance exercise capacity. Research demonstrates increased blood flow, reduced perceived exertion, greater training volume, and lower next-day muscle soreness. The standard ergogenic dose is 6-8 g taken 45-60 minutes before training.
Converts to arginine more efficiently than supplemental arginine itself. Boosts nitric oxide, training volume, and reduces next-day soreness.
Read the full ingredient guide →Take our quiz. We'll compose a complete stack that fits your goals, body, and budget, in minutes.
Take the quiz →