Dear Dr. Donohue: I am a 69-year-old woman and take simvastatin and alendronate. I was feeling really tired. My muscles and joints hurt. I told my doctor, and he cut the dose of simvastatin. I was still tired and hurting, so I stopped all meds. I now feel a lot better. My doctor says I need to stay on simvastatin because of family history. What would you suggest?