Does cyproheptadine negatively affect memory in the way that OTCs like Benadryl have been proven to do?
Again, I think if those first generation anti-histamines affect memory it's because they lower stress.
One of the aspects of adaptive high stress hormones like cortisol is to improve cognition at the expense of every other function.
When you lower chronically high stress hormones you may feel like you lose mental acuity but in fact it was merely propped up by stress hormones.
I think it's normal, and you should expect to be "dumber" and more forgetful for a while, during your recovery from a chronically high stressed state.