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3 g of L-Citrulline Per ServingFeaturing Kyowa Quality® L-CitrullineUnflavoredSuitable for VegetariansFormulated Without Gluten GMOs or SoyProduced in a 3rd Party Audited cGMP Registered (Certified) FacilityiTested QualitySuper Nutrition® L-Citrulline uses Kyowa Hakko® L-Citrulline an amino acid that supports nitric oxide production and promotes healthy cardiovascular function.*Benefits of L-CitrullineL-Citrulline is a non-essential amino acid that plays a key role in nitric oxide metabolism. Research shows that L-Citrulline is more effective at increasing plasma Arginine levels than supplementing with L-Arginine alone. L-Citrulline is converted into Arginine which serves as a precursor to nitric oxide.*iTested Verified