• immediate & sustained
• support the cardiovascular system
• recovery from athletic performance

What is Doctor??s Best Sustained Plus Immediate Release Arginine?

Doctor??s Best Sustained Plus Immediate Release Arginine promotes a healthy cardiovascular system, enhances healthy circulation and supports heart function.* L-arginine has been shown to support the cardiovascular system, through its conversion to nitric oxide.* Research suggests L-arginine supplementation may also have positive benefits on athletic performance.* Two tablets of Doctor??s Best Sustained Plus Immediate Release Arginine delivers 1000mg L-arginine in a bilayer tablet, with two tablets providing 500 mg of sustained release and 500 mg of immediate release L-arginine. This technology allows for enhanced blood levels of L-Arginine for a continuous period of up to 8 hours.*