Nitric Oxide dilates blood vessels, increasing blood flow to the testes and penis. Insufficient production of Nitric Oxide can result in erectile dysfunction. The erection-promoting drug Viagra produces its effects by acting on the Nitric Oxide-cyclic GMP pathway that mediates penile erection.

Within the brain, nitric oxide also plays a crucial role in the release of chemicals that increase libido. Insufficient production of Nitric Oxide can result in diminished sex drive.

During sexual activity, stress, or intense exercise a horse's body uses up large amounts of Nitric Oxide. To promote fertility in a stallion it is essential to support production of Nitric Oxide to replenish what is depleted.

Fertil+Stallions™ is designed to promote fertility in stallions by supporting production of Nitric Oxide.

Nitric Oxide is synthesized in the body from its nutrient precursor, the amino acid arginine. Attempts to increase Nitric Oxide production by administering large quantities of arginine have met with limited success. Additionally, administering substantial amounts of arginine may have undesirable side effects, either through stimulating insulin release or by affecting other mechanisms.

There has been a need for a way to increase the amount of Nitric Oxide produced within the body using relatively small doses of arginine. Achieving these previously unattainable results was made possible through the development of a proprietary product formulation methodology, known as NPS.