Nitrosigine is a patented complex of Bonded Arginine Silicate that has been shown to promote nitric oxide production and blood flow.* While Nitrosigine is a powerful pump ingredient alone, if you're looking to take your pump even further we recommend pairing this with CHIMERA PUMP which contains L-Citrulline. Studies have shown that when paired together, Arginine and Citrulline show greater increases in vasodilation, rather than separately.*