Citrulline vs. Arginine Which One's Better for Vasodilation? @moreplatesmoredates A lot of pre workouts still include Arginine under the assumption that since it's the direct precursor to nitric oxide, it must be L Citrulline vs L Arginine: Boost Your Performance! L Arginine L Citrulline Complex 3000mg per serving 250 Capsules ATOM BCAA 250g with L arginine, L Carnitine, L Citrulline AS IT IS Nutrition Amazon.com: BMVINVOL L Arginine L Citrulline Supplement Plus Beet Root, Moringa, Olive, Red Spinach for Support Daily 90 Capsules : Health & Household L Citrulline vs L Arginine