Science-Based Nutrition™KQ - Kyowa Quality®Helps Improve Circulation and Muscle MaintenanceDietary SupplementVegan / Non-GMO / Gluten Free / Soy FreeL-Citrulline is an amino acid that plays an important role in nitric oxide metabolism and regulation. In the body, L-Citrulline is converted to L-Arginine to support L-Arginine and nitric oxide levels. Increased production of nitric oxide promotes vascular dilation which improves oxygen and blood circulation throughout the body. Research has shown that L-Citrulline raises plasma L-Arginine, thereby allowing higher protein synthesis and protein content in muscle during exercise.Helps support nitric oxide metabolismHelps support muscle protein synthesis and relive muscle fatigueHelps support vascular healthNo added or artificial flavors, colors, or preservatives