L-Arginine 2000 Powder 200 g – VitOBest VitOBest L-Arginine 2000 is a vegan, flavorless amino acid powder (Kyowa®) ideal for boosting nitric oxide and muscle mass. What is L-Arginine 2000? It is high purity fermented L-arginine that acts as a precursor to nitric oxide and improves circulation. What are the benefits? Vasodilation and performance: promotes muscle blood flow and enhances workouts. Muscle support: helps build and maintain muscle mass. Recovery and healing: stimulates tissue repair and the immune system. Ingredients L-arginine (Kyowa®) – 100% pure. How to take Dissolve 10 g in water, 1–2 times a day according to sports needs. Format 200g container of unflavored powder.