GNC AMP Tri-Phase Multi-Action Pre-Workout is new and only at GNC! The pre-workout for your full workout — this multi-action pre-workout formula was created to help enhance mental focus, physical performance, and endurance. Contains caffeine for immediate energy boost and sustained release for prolonged mental stimulation Fuels muscle energetics with PeakATP®, CarnoSyn® Beta-Alanine, and CON-CRET®…
