Bottles
Caffeine plus L-theanine (Guarana Extract)
Caffeine 100 mg plus L theanine 200 mg (60 capsules, 30 servings)
Caffeine plus L-theanine is a popular stack among nootropic users. Caffeine is an anti-sleep compound from coffee beans. It prevents atagonizing adenosine, the receptors causing sedation and relaxation, and results to alertness and wakefulness. Caffeine alone, though it is great for focus and concentration, may give you jittery feels. …