For the better part of four years, I've been studying and testing nootropic stacks on myself, in addition to a semi-regular protocol of psychedelics. I'm a 25-year-old male, ~160lbs, I recently procured a sample of an experimental (VERY experimental!) ampakine benzothiadiazine derivative called IDRA-21, and thus far, having been quite careful to start low, I'm impressed with what it's doing. I'm more alert in a totally non-jittery way, and I'm motivated to learn things (above baseline); body itches from mosquito bites are more pronounced, and there's a shade of stomach upset, but not bad. I'll no more about the effectiveness after I've done this protocol for longer. Brainhackers, stay posted.