Bigjoy Arginine Forest Fruit Flavored 500GArginine is now available in a new 500 gram package. Arginine is a semi essential amino acid used especially before training to enhance performance. By increasing nitric oxide levels, arginine improves blood circulation, delivering more nutrients, oxygen, and glucose to your muscles. This allows you to perform at a higher level during your workout and experience a greater pump sensation. Because your muscles receive more fuel, the repair and growth of