Muscletech Amino SX-7 Black Onyx Next Generation , 265 gr

Amino 4XL™ SX-7^® Black Onyx™ features two groundbreaking forms of leucine: PepForm^® leucine and ActiveTR™ leucine.

L-leucine is the BCAA with the highest anabolic potential. It activates the mTOR enzyme, which amplifies protein synthesis. Amino 4XL SX-7 Black Onyx delivers L-leucine as free-form leucine, as well as PepForm^® and ActiveTR™ leucine to ensure your body gets a steady supply to keep your body in a prime anabolic state.