Doctor's Best Citrulline Powder provides pure L-citrulline, an amino acid that plays a vital role in boosting nitric oxide levels in the body. Nitric oxide supports improved blood flow, which enhances nutrient delivery and oxygen availability during physical activities. This can lead to increased endurance, faster recovery, and reduced muscle fatigue. Citrulline is particularly beneficial for athletes and individuals looking to improve performance during intense workouts or physical exertion. The unflavored powder is easy to mix with water, shakes, or other beverages, and is free from artificial additives, gluten, and GMOs, making it a clean supplement for promoting cardiovascular health, endurance, and muscle recovery.