Stimulant free. With COP (Creatinol-O-Phosphate & DI-NA Creatine Phosphate Tetrahydrate). Awesome flavor. N.O. SyntheSize was designed to enhance: unparalleled training intensity; mental acuity and focus; whole body creatine retention; insulin sensitivity and responsiveness; insulin medicated lean mass; meltdown-induced fat loss; muscle fullness and blood-engorged pumps; strength, power, endurance & recuperation; crisp, water-free muscle separation; blood flow & nitric oxide (N.O.) levels; COP is resistant to creatinine degradation in the gut. Sucralean: Zero calorie sweetener. World's most hardcore creatine matrix! Explosive lean muscle growth with research-proven science! If you want to speed up lean muscle growth, get this one fact straight: Insulin is the most anabolic (muscle building) of all hormones. In fact, insulin triggers more lean muscle growth than anabolic steroids or growth hormone! Consequently, the goal of sugar-free SyntheSize is to promote massive increases in insulin without the use of high glycemic index carbohydrates and thus, prevent insulin resistance. Therefore, SyntheSize provides a carbohydrate free approach utilizing research-proven compounds to boost insulin that have no adverse effect on blood sugar. This method keeps the body highly sensitive and responsive to insulin resulting in greater lean muscle growth and destruction of fat tissue. Efficient insulin metabolism also allows you to continually access store body fat to use as energy.