gnc maca man, maca root arginine for enhanced blood flow - 60 vegetarian capsules gnc gnc maca man dietary supplement advanced sexual health formula for men 900 mg of maca root 1,000 mg of arginine fuels nitric oxide production for enhanced blood flow for more information about whole herbs vs. extracts, these statements have not been evaluated by the food & drug administration. this product is not intended to diagnose, treat, cure, or prevent any disease.