Nitro4™ is a complete "cell volumizing" supplement containing 4 powerful ingredients including Arginine-Alpha-Ketoglutarate (AAKG) known as a precursor of the gas Nitric Oxide (NO2) and catalyst for NO2 synthesis. Arginine-Ketoisocaproate (AKIC) to further the effects of NO2 production, as well as Ornithine-Alpha-Ketoglutarate (OKG) which preserves muscle protein synthesis and spares nitrogen. Glutamine-Alpha-Ketoglutarate (GKG) which helps support cell volumizing by preserving the amino acids glutamine and taurine, and increases amino acid transport.
Posted by: nni
so you are looking for nitric oxide, not nitrogen?
look into N.O. Limits, its hard to beat it.
although this category of product is not necessary at all, it is more of a luxury product.