Product Review

The new, supercharged muscle building amino formula from Muscletech SX-7 Is here. Introducing, Amino 4XL SX-7 Black Onyx, the only BCAA product that delivers a powerful 5: 1: 1 BCAA Ratio (which includes both Pepform Leucine and ActiveTR Leucine) combined with the clinically studied muscle building power of Peak ATP to build muscle, enhance performance and boost endurance. Amino 4XL SX-7 Black Onyx also contains several other popular ingredients, such as Taurine, L-Citrulline, Glutamine and an electrolyte blend that features Coconut Water. With Amino 4XL SX-7 Black Onyx, you get everything you want in a BCAA formula and more.