INCREASED VASODILATION! Arginine is a natural precursor to nitric oxide, a neurotransmitter which relaxes the body's blood vessels. This improves circulation and may also reduce blood pressure. MORE PROTEIN! L Arginine helps you manufacture protein and rid your body of waste. Not everyone is able to produce sufficient levels on their own and so supplementation is required. BETTER WORKOUTS! L-Arginine is essential for creatine production which is vital for muscle nourishment. It gives you energy during workouts and improves athletic performance. You'll feel less fatigue. INCREASED STAMINA! Fitness coaches recommend L Arginine as a sports supplement to increase stamina and performance. It's used by men and women. Make every workout count with our strong NO Booster. PREMIUM QUALITY: Our L-Arginine is made locally in the UK under GMP certified facilities. It successfully passed all the strict tests applied by the government. Guaranteed and completely safe to use!