http://www.medications.com/effect/view/34121 I have muscle pain, weakness, and chronic lower back pain. Started statin drug, Simvastatin, on 11/21/07. I take no other drugs. Within two weeks, I could not sit without severe lower back pain. Reported problem to family medical doctor on 1/11/08. M.D. Wed, 03 Sep 2008 20:11:19 -0400 http://www.medications.com/effect/view/34121?item=11926 Get off it fast, see my reply posting above yours, also see my reply under lipitor side effects. I've had a total hip replacment - that I now know I did not need at the time (last Year). I was ready to go back to the doctor for a second hip replacement now http://www.medications.com/effect/view/34121?item=11926 Wed, 03 Sep 2008 21:45:44 -0400 http://www.medications.com/effect/view/34121?item=11934 there are simple blood test to see if you are exp. serious side effects from your statin. a ck level will show muscle breakdown. sounds like you have good insurance with all the testing! most statin patients exp. some muscle aches from the drug, these usua http://www.medications.com/effect/view/34121?item=11934