On diagnosis (2000) my cholesterol was 7.6. Diet reduced it to about 5.0 - low sugar, low fat, low salt, lots of fruit & veg, oat bran, Flora pro-active ...
Dr tried me on Simvastatin 10 mg & total Chol fell to about 4.0. After about 8 months on Simv, muscle pain became so severe that I had difficulty getting out of bed. When I was trying to get out of bed I could not move my right thigh under its muscle power. I had to use my hands to move my leg. Once I was upright I was reasonably OK. It was so long after starting Simv that I did not consider it being a side effect.
Then I read in "Balance" some letters reporting muscle pain, & the benefits of giving up statins. I stopped at once, & within a week the pain had gone. I contacted the Dr & he confirmed it as a common side effect, as did the chemist. Why did they not warn me? Chol is again steady at 5.0.
My wife, following a heart attack, is on Simv. She suffers muscle & joint pains but is afraid to try giving up Simv for a trial period & the Dr says statistically husband & wife won't have the same problem??? She cries out in pain sometimes.
Don't stop medication, but report any problems to the Dr.