Get stung by the latest addition to the Stacker2 hive of products. Swarm Extreme Energizer is a proprietary blend of herbs that combines Green Tea Extract, Yerba Mate, and Capsicum. Swarm provides you with an extreme boost of energy when you need it. Extreme Boost of Energy! Formulated with Green Tea, Yerba Mate, and Capsicum! Melt Fat! Power Up Your Day!