Glycine vs L-arginine

Evidence-based comparison of Glycine and L-arginine — absorption, dosage, safety, and which is best for your needs.

L-arginine

Nitric oxide production: Increases NO synthesis for vasodilation and blood flow

Full Guide

Detailed Comparison

GlycineL-arginine
CategoryAmino acidAmino acid
MechanismSleep regulation: Supports neurotransmitters and pathways involved in sleep; Antioxidant activity: Neutralizes free radiNitric oxide production: Increases NO synthesis for vasodilation and blood flow

Which Should You Choose?

Glycine may be better if: Sleep regulation: Supports neurotransmitters and pathways involved in sleep; Antioxidant activity: Neutralizes free radicals and reduces oxidative str

L-arginine may be better if: Nitric oxide production: Increases NO synthesis for vasodilation and blood flow