pecial Ingredients L-Arginine, Amino Acid, L-Citrulline Brand NutraBio Item Form Powder Allergen Information Gluten Free Material Feature GMO Free, Vegetarian, Gluten Free About this item Improve Nitric Oxide Levels - NutraBio Citrulline can help provide better recovery, vascularity, and energy during your workout. Improves Blood Flow - Citrulline is used by the body to maintain flexibility in the arteries and support healthy blood pressure. Relieves Muscle Fatigue - This is an amino acid that can help improve energy, endurance, and recovery by improving protein synthesis. Superior Quality - NutraBio uses only the best, and this product is no exception. Non-GMO, gluten free, soy free, vegetarian, third-party tested and made in the USA. Third Party Tested, Full Disclosure - Tested by an independent third party lab to ensure it is both pure and meets our strict quality standards. All NutraBio products feature fully transparent labels with no proprietary blends.