Anastrozole did not work for me. Took almost a month to feel better. Started Exemestane- side effects not as bad but after about a month insomnia kicked in ☹️. Not sleeping makes all other side effects worse- including brain fog and yes unable to recall or takes a while to recall. I started taking it ( after talking to my PCP) every other day. It’s been about a month now and not much difference. I’ve tried taking it at a different time and adding various sleep aids. Not much luck still. The only other option I see for me- is stop taking or try acupuncture. I really wanted to stay on until June. Closest acupuncturist is over an hour away.