Is an amino acid which is produced naturally in the body and when it declines with age it causes nitric oxide production to fall too however you can get it as a supplement and in testing after just two weeks of taking it, nearly 80% of men. You simply cannot get an erection without it and as levels fall as men get older, its a com cause of erectile dysfunction. Synthetic drugs increase nitric oxide secretion but you can also do it naturally, with no side affects with the best herbal sex pills. The supplements below will increase levels naturally and give you some other sexual health benefits at the same time. Nitric Oxide and a Hard Erection - Why You Need it and How to Increase Levels Naturally Nitric oxide is needed not just for a hard erection, its needed for any erection.

Nitric oxide quite simply increases blood flow into the penis and this is due to the fact that it relaxes the walls of the blood vessels which feed the penis, making them wider and able to take enough blood in, to make the penis hard.