It’s not all that often, but often enough, that people don’t respond to nootropics. Most folks experiment with racetams, like Aniracetam and Oxiracetam, and afinils,
–One of my favorite all time nootropic stacks is the simple: Piracetam/Caffeine/Theanine stack. I tend to dose it in the following quantities: 2G Piracetam 120MG