WHAT? AGMAPURE is a trademarked form of Agmatine Sulfate. Agmatine Sulfate is a salt of agmatine, and is thought to potentially improve physical endurance, vascularity & bloodflow. Currently, It is a high purity Agmatine Sulfate, produced by natural biological process. HOW? AGMAPURE Agmatine Sulfate appears to boost muscle pumps in a couple different ways. First, Agmatine sulfate may improve nutrient partitioning, leading to more muscle glycogen (carbohydrates stored in muscle tissue) stored and consequently more water retained in the muscle. This can lead to a full look to the muscle and increase muscle pumps. Second, Agmatine sulfate also appears to increase nitric oxide production by acting as a competitive inhibitor of the enzyme nitric oxide synthase. The nutrient partitioning effects of agmatine may be due to its possible ability to increase the insulin response to carbohydrates, and it may also have something to do with the increased blood flow to the muscle experienced with increased nitric oxide production.