Nitric Oxide, or NO Supplements, can certainly help you improve your gains in muscle and bodybuilding. Nitric Oxide works by signalling the body to expand the blood vessels, allowing for more blood flow. Put very simply, more blood flow to the muscles means more valuable oxygen and nutrients are getting to the muscles. This provides more muscle mass and allows for greater endurance, allowing you to workout longer. The added nutrients also promote faster muscle growth and quicker recovery from your workouts, provided you are eating a proper diet. NO or Nitric Oxide is especially effective when combined with adequate protein and Creatine supplementation.