Doctor's Best, Sustained Plus Immediate Release L-Arginine, 500 mg, 120 Bilayer Tablets

Science-Based Nutrition™Helps Boost Nitric Oxide (NO) Levels to Support Overall Cardiovascular HealthDietary SupplementVeganNon-GMO / Gluten Free / Soy Free Doctor's Best Sustained plus Immediate Release L-Arginine contains this essential amino acid in a bilayer tablet, with two tablets providing 500 mg of sustained release and 500 mg of immediate release L-arginine in a formula that delivers enhanced blood levels. These tablets are specifically manufactured to immediately increase blood levels of L-arginine and then to sustain this beneficial increase continuously over an 8-hour period. Research suggests that arginine supplementation helps increase muscle mass and may also positively beneficial in improving endurance as it a precursor to creatine, which helps supply energy to all cells of the body. L-arginine has been shown to support the cardiovascular system, heart function and improve overall circulation through its conversion to nitric oxide. Helps support athletic enduranceHelps support recovery from athletic performance