unfortunately there's no solid answer to your question. muscle pain and weakness such as the pain you describe is a known side effect of statin medications. statin medications are used to treat high cholesterol levels. i'm guessing your health care provider switched you from simvastatin to atorvastatin to see if it would help your upper arm pain. the answer remains to be seen. if your arm pain clears up then great! if it doesn't then i'd recommend you go back to your health care provider to discuss the situation. there are many statin drugs to choose from. just because you experience a side effect from one of them does not mean you'll experience side effects from all of them. i hope this helps. good luck to you! i have muscle pain and my thighs have changed shape waiting to see a neurologist to see if statins are the cause i have been on simvastatin -side effects rosuvastatin-side effects pravastatin -side effects and fibrates -side effects i am now taking policosanol with coq10 -no side effects as yet my reply stay well clear of statins be healthy
5+ years on simvastatin 20mg. 12 mo. ago muscle pain upper arms recently swithched to atorvastatin 20mg will it help? . in addition i am taking coq10 for 4 months.