Nitric oxide is essential since it allows blood, nutrients and oxygen to travel every part of your body. As we get older, our body's natural ability to make nitric oxide reduces, which increases the chances of unwanted health complications. By taking we can increase circulation, energy levels, digestion, muscle recovery, bones, sex, vitality, vision and brain function. 60 servings. Take one scoop in the morning and one scoop 12 hours later in 6 oz of water, or two scoops at the same time in 8 oz of water. Should be taken at least one hour from meals.