Double strength l-arginine: now offers this non-gmo, double strength l-arginine supplement in 1,000 mg tablets.
nitric oxide precursor: arginine plays an important role in the dilation of blood vessels.
classifications/certifications: non-gmo, kosher, soy free
gmp quality assured: npa a-rated gmp certification means that every aspect of the now manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).