Natural Factors L-Arginine 500 mg is a non-essential amino acid involved in protein synthesis. It may help support a modest improvement in exercise capacity in individuals with stable cardiovascular disease (CVD). As a free-form amino acid, L-arginine is easier for the body to absorb and use than when consumed from food.

May help support a modest improvement in exercise capacity in individuals with stable cardiovascular disease (CVD)
Supports protein synthesis
Helps replenish arginine levels during times of stress
Used to make nitric oxide, a compound in the body that helps relax blood vessels and improve blood flow