Tamoxifen
"I've been on tamoxifen for 3 1/3 years.  In the beginning I was fine, but as years went on I began time have extreme fatigue, feels like it's hard to swallow at times, anxiety, can't drive due to lack of focus, and hot flashes.   Oh, I forgot that I gained a lot of weight and I take Zumba classes.  I told the dr. that I'm having a hard time driving and he just dismisses what I say.  The nurse said that there was another patient complaining about the same thing.  I have 6 1/2 more years on this medicine.   I'm doing my best!"