Caffeine with Taurine contains the optimal amount of caffeine and taurine. These ingredients work synergistically with each other, which means that their combination provides more pronounced effects than taking them individually. Caffeine is the most commonly used psychoactive substance in the world. Its main effect is stimulation of the central nervous system. Taurine is an amino acid that occurs naturally in the body and in many foods. Taurine is an important component of cell membranes and participates in various physiological processes.