Bluebonnet's L-Arginine 1000 mg Caplets provide free-form, pharmaceutical-grade L-arginine from Ajinomoto, the world-class leader in the production and purity of amino acids. Since this vegetarian-sourced amino acid is compressed into easy-to-swallow caplets for maximum assimilation and absorption, L-arginine is more bioavailable to increase nitric oxide levels. This supports enhanced blood flow to muscles for a more intense, powerful workout and faster recovery.