GNC AMP - Mass XXX

About this item

• Clinically Proven Gainer: 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 Mass with 40% Fewer Sets: 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
• Improve 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: Product was tested and monitored for over 220 banned substances on the 2020 World Anti-Doping Agency (WADA) Prohibited list via LGC skip lot testing