Axe & Sledge Citrulline 40srvINCREASE ENDURANCE, BLOOD FLOW, AND PUMPS WITH CITRULLINE CITRULLINE, ALSO KNOWN AS L CITRULLINE, IS A NON ESSENTIAL AMINO ACID THATS NATURALLY FOUND IN SOME FOODS, SUCH AS WATERMELON. IT CAN ALSO BE PRODUCED BY THE BODY WHEN NEEDED. CITRULLINE IS OFTEN FOUND IN PRE WORKOUTS BECAUSE IT SIGNIFICANTLY INCREASES NITRIC OXIDE LEVELS. NITRIC OXIDE IS A MOLECULE THAT CAUSES VASODILATION (EXPANSION) OF YOUR BLOOD VESSELS. THIS ALLOWS YOUR BODY TO SHUTTLE