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® Creatine HCl
- Supports long-lasting physical endurance with FitNox® and Nitrosigine®
- Tested for over 285 banned substances, safe for competitive athletes
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