L-Arginine
Amino acid precursor of nitric oxide. Improves blood flow, erectile function, and may support athletic performance. Citrulline is more effective at raising plasma arginine.
💡 Absorption: L-citrulline raises arginine more efficiently than oral arginine (hepatic first-pass effect). Take on an empty stomach for better absorption.
⚠️ Caution: May trigger cold sores in susceptible individuals. Interacts with antihypertensives and Viagra. Do not use with a recent heart attack.
📚 Scientific references (3)▼
Review of L-arginine effects on exercise capacity and growth hormone release.
L-arginine (6g/d) significantly improves flow-mediated dilation in hypertensive patients.
L-arginine improves endothelial function via nitric oxide pathway.
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