GNC AMP Mass XXX with MyoTor, Vanilla, 13 Servings

You can get even more out of every workout session when you make GNC AMP Mass XXX™ with MyoTOR a part of your exercise routine. This protein-packed dietary supplement is clinically proven to help increase lean muscle mass with fewer sets. Enhanced with MyoTOR for improved strength and stamina, plus, a creatine blend to help support athletic performance and muscle protein synthesis, while micronized amino acids support key processes crucial to muscle growth and repair.

CLINICALLY PROVEN STRENGTH AND MASS GAINER: GNC AMP Mass XXX mass gainer combines high-quality protein powder, key nutrients, and science-backed innovations—including MyoTOR, creatine, and BETAPOWER—to fuel proven results and performance. INCREASE LEAN MUSCLE MASS WITH 40% FEWER SETS: Mass XXX’s macronutrient blend delivers 50g of protein, including naturally occurring EAAs, plus carbs, and healthy fats—and it’s clinically proven to help get better results out of workouts. IMPROVE MUSCLE STRENGTH IN AS EARLY AS 2 WEEKS: MyoTOR is clinically proven to accelerate improvements in strength with as little as 2 weeks of training and included in every serving of Mass XXX mass gainer. ENHANCED FOR IMPROVED STRENGTH AND STAMINA: Take resistance training to a new limit with MyoTOR’s clinically studied support for improved muscle endurance and BETAPOWER’s athletic performance benefits. BANNED SUBSTANCE TESTED: Unlike most mass gainers with proprietary blends, Mass XXX is certified Banned Substance Tested and formulated to help you gain mass without compromising your goals. Banned Substance Free