This pre-workout formula works especially with the science of L-citrulline. This nutrient is converted into the urea cycle and leads to high NO-concentrations in the body. A natural dilation of blood vessels improves the blood flow to the muscles and provides an immense muscle pump. The formula is supplemented with taurine, L-carnitine and beta-alanine. Unlike most types of product, only a low doses of caffeine is added to Nitro Fuel so that it does not cause heart palpitations or a rushed feeling.