Guarana Seed Extract (std. min. 22% Caffeine) 100mg * Guarana is an effective stimulant, with 2.5 times more caffeine than coffee. According to the Herbal Resource website, guarana is a primary ingredient in energy drinks. Many fitness enthusiasts use guarana for its metabolism-boosting effects. It also boosts energy and performance InfinergyTM Dicaffeine malate 68.5mg * InfinergyTM represents a precise combination of Caffeine and Malic Acid into an ionic bonded compound. By combining the well-established properties of Caffeine and Malic Acid, InfinergyTM offers a multi-dimensional ingredient that not only optimizes energy levels, but also stimulates thermogenesis while promoting mental focus. N-Methyltyramine HCl 25mg * helps encourage your brain to release a bit more norepinephrine, which is the hormone/transmitter that is naturally released when your body has a "flight or fight" response. This response then increases heartbeat, improves blood flow to muscles, and mobilizes (burns!) fat by releasing glucose from energy stores. Hordenine HCl 25mg * Hordenine HCL is used as a stimulant, a stimulant tolerance inhibitor, and for weight loss. Hordenine HCL may assist with weight loss, in part, by encouraging the release of norepinephrine. Norepinephrine is an excitatory hormone and is lipolytic, which means it helps release fat from fat cells that are oxidized, therefore increasing energy and reducing overall fat on the body. Having a supplement like Hordenine to help take the edge off of appetite surges can make it much easier to stick to your regimen Huperzia Serrata Extract (std. min. 1% Huperzine A)(club moss) 100mcg * Huperzine A is very effective in providing relief from muscular fatigue after heavy exercise. Huperzine is also very useful in boosting the immune system and it may also provide strength to the nerves of the human body