What is Stacking?
A nootropic "stack" means using several nootropics together to achieve an effect that no single substance can provide. In a well-designed stack the substances complement each other: one offsets another's side effects, or they support the same goal through different mechanisms. The classic example is caffeine + L-Theanine: L-Theanine preserves focus while softening caffeine's jittery effects.
The example stacks below are offered as a starting point; there is no one-size-fits-all formula. Always start with a single substance and build up while observing your tolerance.