Optimum Nutrition Pre-Workout Amplifier is a sugar-free, high-stimulant pre-workout powder. It is for lifters who want caffeine plus performance ingredients before training.
- 300 mg of caffeine per serving
- 3 g of beta-alanine, 2.5 g of betaine and 6 g of micronized L-citrulline per serving
- 20 servings per 380 g tub
- Sugar free
Contains caffeine.





