Nitric Oxide

Nitric oxide is a key molecule manufactured by the body when the amino acid L-Arginine is converted to L-Citruline through an enzyme group known as Nitric Oxide Synthase (NOS).  Nitric oxide is of key interest to bodybuilders because it causes vasodilation (an expansion of the internal diameter of blood vessels).

This vasodilation can lead to increased blood flow, oxygen transport, and delivery of nutrients to skeletal muscle, along with a reduction in blood pressure.  NO2 has also been shown to reduce inflammation.

An amino acid compound called arginine alpha-ketogluterate (A-AKG) and arginine-ketoisocaroate (A-KIC) can boost short term Nitric Oxide levels.  Common benefits to strength athletes include increased strength and stamina, an extended muscle pump, and accelerated muscle growth and recovery.