EVL’s L-Citrulline 2000 offers one of the the best options to boost the body’s production of nitric oxide. First, it is pure plant based L-Citrulline, unlike most competitors. And unlike L-Arginine which goes through the digestive system first before being absorbed, L-Citrulline can bypass the digestive system and go directly into the bloodstream, where it can more effectively boost nitric oxide production. Nitric oxide increases blood flow, letting more oxygen into your muscles by helping blood vessels relax and widen. Better blood flow equals bigger pumps and muscle growth to perform at your best!