Noopept and some of the racetams measurably improved my cognitive performance. I've tried most everything under the sun and used my body as a walking science l

Noopept and some of the racetams measurably improved my cognitive performance. I've tried most everything under the sun and used my body as a walking science lab. Most things don't have a noticeable effect, but there are a handful of things that do. (Also, YMMV, personal chemistry)