NUTRIWORKS Citruline Malate 300gInstant powder containing 100% amino acid Citrulline Malate Citrulline Malate is a non essential amino acid whose effects are related to the production of nitric oxide, which has the effect of dilating blood vessels and increasing blood flow to the muscles. With increased blood flow, more oxygen and nutrients enter the muscles, which increases energy, reduces fatigue, improves endurance and strength training results. The effects of citrulline are also