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For athletes, arginine AKG is beneficial because it helps to increase the growth of muscles and increases the dilation of blood vessels. If you exercise regularly and have more blood flowing to your muscles, your muscles will look bigger.
Proponents claim that L-arginine can also benefit: 1  colds. 2  dementia. 3  hair. 4  high blood pressure. 5  intermittent claudication. 6  interstitial cystitis. 7  male infertility. 8  migraines. 9  preeclampsia. 10  sexual dysfunction in women.