Citrulline is classed as a natural sexual enhancer and its effectiveness has been examined in numerous research. As already noted, nitric oxide is needed for an erection, which dilates the blood vessels in the body and enables higher blood go with the flow, which then additionally supports an erection. Citrulline, that's a natural precursor to arginine, begins this technique. This is how arginine is to begin with created from citrulline. An enzyme then guarantees that argining is metabolized and nitric oxide is produced.