Best Sustained Release Arginine contains the conditionally essential amino acid L-arginine in a sustained-release formula that allows for enhanced blood levels of this nutrient. L-arginine is quickly absorbed into circulation and is extremely efficiently metabolized, yielding only a short-lived boost to L-arginine levels. Best Sustained Release Arginine tablets are specially manufactured to release the L-Arginine continuously over a 5-7 hour period, resulting in sustained levels in the blood.

L-arginine has been shown to support the cardiovascular system, promote vigorous heart function and enhance healthy circulation throughout the body through its conversion to nitric oxide. Research suggests L-arginine supplementation may also have positive benefits on athletic performance.