L-Citrulline Powder

L-Citrulline is a naturally occurring amino acid found in watermelon and produced by the body during the urea cycle. Unlike supplemental arginine, citrulline bypasses first-pass metabolism in the liver and intestines, leading to a more sustained elevation of plasma arginine and, in turn, increased nitric oxide synthesis — a signaling molecule involved in vasodilation and blood flow regulation. Athletes and active individuals commonly use L-Citrulline powder before training sessions to support endurance, delay the onset of muscle soreness, and aid recovery. The powder form dissolves readily in water or can be added to pre-workout drinks, making it easy to measure precise doses; research studies have typically used amounts in the range of 3–8 grams per day, though individual needs vary and consulting a healthcare professional is advisable.