Natural Factors L-Citrulline 1000mg - A free-form amino acid supplement that supports nitric oxide levels in the bloodstream. As a substrate for nitric oxide, L-citrulline is used for athletic support in high-intensity workouts, as a vasodilator, and to help maintain L-arginine production in the body. This vegan formula is sourced naturally from bacterial fermentation. Each tablet provides a high potency of 1000 mg of L-citrulline, taken three times per day.
