Sustained + Immediate Release L-Arginine

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. 

• Science-Based Nutrition™
• Helps Boost Nitric Oxide (NO) Levels to Support Overall Cardiovascular Health
• Dietary Supplement
• Non-GMO / Gluten-Free / Soy-Free / Vegan™ 

Benefits: 

• Helps support athletic endurance*
• Helps support recovery from athletic performance*
• Helps boost nitric oxide (NO) levels to support overall cardiovascular health*