GNC Amp Tri-Phase Multi-Action Pre-Workout - Cherry Limeade - Proven To Enhance Muscle Performance & Endurance • Multi-Action Pre-Workout Formula: Amplify Every Stage Of Your Workout With Tri-Phase Technology To Power Mental Stimulation, Physical Performance, And Long-Lasting Endurance . • Power Mental Stimulation: GNC Amp Tri-Phase Pre-Workout Gets You In The Zone With An Immediate Boost From Caffeine Anhydrous And Keeps It Going With Sustained-Release Caffeine From Xtenergy™ P2 Coffee Bean Extract . • Fuel Muscle Energetics: Push High-Intensity Stages Of Your Workout Even Harder With Peakatp® For Muscle Energetics, Carnosyn® Beta-Alanine To Increase Carnosine Levels, A Critical Muscle Fatigue Controlling Factor, And Con-Cret® Creatine Hcl For Cellular Energy . • Enhance Physical Endurance: Take On Longer And More Challenging Workouts With Fitnox® To Long-Lasting Physical Endurance And Nitrosigine® Which Has Been Clinically Studied To Arginine Levels. • Banned Substance Tested Pre-Workout: Compete With Confidence Knowing GNC Amp Tri-Phase Is Tested For Over 285 Banned Substances. | GNC Amp Tri-Phase Multi-Action Pre-Workout - Cherry Limeade(30 Servings)