L-Arginine is an amino acid and the direct precursor for nitric oxide synthesis, which relaxes and widens blood vessels — relevant to circulation.
Research on L-Arginine's circulation effects commonly uses doses of several grams (thousands of milligrams) daily; JellyBoost's 50mg is a supporting-level dose rather than a research-matching one.
L-Arginine HCl works alongside Beet Root Extract on the circulation-support side of JellyBoost's formula.