AmiNo flow utilizes 2 grams of L-citrulline per serving rather than the bonded L-citrulline malate, as this form would typically only yield 50% of actual L-citrulline. There have been similar products claiming to be a 2 in 1 Amino Acid-Nitric Oxide product, however an analysis of these formulas reveals that the Nitric Oxide claims are based on a single ingredient rather than a system of NO ingredients.