Has anyone had any problems with their memory being affected? I've read and read, web search, etc. I'm still trying to figure out if it's my thyroid, something else, or another RX causing the problem. Sometimes it seems like it's my thyroid and the RX for it helps, then it slips back again . Any suggestions? I am currently taking Synthroid and I was on Levo. I've had my doctor prescribe T3 also but I've stopped that because of migraine issues. Since I have migraines, and some meds create more problems in that arena at times, I have to make slow changes.