Black Pearl RTD from VPX Sports:

Caffeine is a power and energy accelerant! It's perfect to super energize your body for powerful workouts. This fast-acting substance delivers the right molecular structure to your energy systems for maximum energy and power output. Caffeine much like Ephedra acts to increase mental alertness and neurologically provide the surge you need to maximize your training. Not just a stimulant, this powerful substance reaches deep into the muscle cell to provide lasting power and delaying the onset of muscle fatigue. Other ingredients to assist in vasodilating and libido enhancing are added to increase effects.