![XPN XPN - Pure Arginine Agrumes - 300 g](https://cdn.shoplightspeed.com/shops/633414/files/59115132/xpn-xpn-pure-arginine-agrumes-300-g.jpg)
Arginine is an amino acide that participates in the metabolic pathway that produces nitric oxide (NO).
This amino acid is responsible for the vasodilatation of blood vessels which offers a better blood flow and an intense muscular pump.
Arginine is the principal and most essential ingredient of all pre-workout products.