Caffeine
Focus enhancement & performance boost
Performance: 48 compounds are used here, 21 of them at evidence level A. The most used is Caffeine. Between them there are 246 documented interactions — which is why the order and timing of a stack matters as much as the choice.
Focus enhancement & performance boost
Strength & power enhancement
Muscle growth & recovery
Hair growth & nail strength
Bone health & muscle function
By usage and evidence: Caffeine, Creatine Monohydrate, Whey Protein. 21 compounds here carry evidence level A, meaning the effect was studied directly rather than inferred.
There is no fixed limit, but every added compound multiplies possible interactions. The compounds on this page have 246 documented interactions between them — check a pair before stacking it.
Depends on the compound. Each page lists first effects and peak benefit windows separately, because the two differ by weeks for most compounds.