I had been taking Gabapentin 300mg X3 daily for years with no memory loss (short term or long), just constipation issues. My pain management doctor switched me to Pregabalin back in April 2026, first at 75mg X3 daily, and then to 150mg X3, and now 200mg X3, also with no memory loss of any kind. I seem to be tolerating it quite well. I guess maybe check back in a year for long term effects.