
L-Citrulline
3,600 mg per serving
The foundation of the blood-flow focus
L-Citrulline is an amino acid that the body converts into L-Arginine, which is used to produce nitric oxide.
Nitric oxide helps blood vessels relax and plays an important role in regulating circulation. During exercise, circulation delivers oxygen and nutrients to working muscles.
Training connectionThis pathway explains why L-Citrulline is a familiar ingredient in formulas centred on blood flow and the workout pump. It has also been studied for exercise performance, with results depending on the dose, protocol and activity.
Beyond the gymCirculation is part of normal physical and sexual function, making nitric-oxide biology relevant to the wider conversation around men’s wellbeing.
NITROXAR provides 3,600 mg of L-Citrulline per serving as the formula’s principal ingredient.
Amino acid • Nitric-oxide precursor • Circulation science









