Try one of the most most popular nootropic stacks for just $29.95! This special deal contains the popular caffeine and L-Theanine stack but with the superior Theacrine substituted for caffeine. - Theacrine - About as potent as caffeine, Theacrine lasts longer and has a slower building tolerance. Properly cycled, Theacrine can be used almost indefinitely without a high tolerance forming. - L-Theanine - A mild anti-anxiety and stress reducing supplement, L-Theanine enhances Theacrine by smoothing out the CNS stimulation it provides and giving you calm, relaxed energy rather than fidgety, nervous energy. - When combined, L-Theanine and Theacrine provide a mild and boost to energy without any overstimulation.