D-Nitrox is a recommended amino acid supplement for equine athletes in competitions, designed for use before physical activities. The combination of taurine and arginine improves metabolism and provides an energetic effect, enhancing athletic performance, leading to excellent results on the track.

Arginine acts as a precursor to nitric oxide, promoting vasodilation, thereby increasing blood circulation in the muscles, improving oxygenation, and facilitating the delivery of nutrients during exercise.