Oral L-arginine is commonly taken in doses around 3 to 10 grams, often before bed or before exercise. The main rationale is to support a substantial growth hormone pulse, though doses above about 9 grams may blunt that effect and it can have cardiovascular effects, so it should be used cautiously.
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“the amounts of arginine that people take are anywhere from 3 G to 10 gram or sometimes even more although this is definitely a case of more is not better there's a threshold at which growth hormone release is actually blunted by taking more than n grams of arginine”
Andrew Huberman · How to Control Your Metabolism by Thyroid & Growth Hormone | Huberman Lab Essentials · Mar 6, 2025 · 19:59 · YouTube ↗