L-arginine vs Leucine
Evidence-based comparison of L-arginine and Leucine — absorption, dosage, safety, and which is best for your needs.
L-arginine
Nitric oxide production: Increases NO synthesis for vasodilation and blood flow
Full GuideDetailed Comparison
| L-arginine | Leucine | |
|---|---|---|
| Category | Amino acid | Amino acid |
| Mechanism | Nitric oxide production: Increases NO synthesis for vasodilation and blood flow | Muscle protein synthesis: Stimulates muscle protein building pathways (mTOR) |
Which Should You Choose?
L-arginine may be better if: Nitric oxide production: Increases NO synthesis for vasodilation and blood flow
Leucine may be better if: Muscle protein synthesis: Stimulates muscle protein building pathways (mTOR)