@sboston1
Lots of people having trouble with Anastrozole and Letrozole. I chose Exemestane and Propel chaser which has electrolytes in it. Little to no side effects. If you switch you have to give your body a chance to adjust too. Talk with your doctor!! I can't imagine, living with joint pain and hot flashes for that long! Switching too soon, is really tough, I read that here from a woman that switched too quickly. Use your doctor's guidance to make the appropriate switching schedule. Are you getting infusions too, with either chemo or Herceptin??