Interesting things Statins. Was prescribed a small dose of Simvastatin daily to help with chlorestorol. The only medication I've ever reacted to, but it took some months to surface and indentify. Symptoms were muscles and limbs (particularly legs) becoming heavy and a feeling of small stones rubbing the soles of my feet. Eventually I started to find it difficult to walk, I just didn't seem to have the strength in my legs. Once we (my GP and I) had identified the problem, it took just a couple of weeks to return to normality, but another brand of statin attempted a few weeks later returned similar symptoms. My advice if you have side effects is to read the slip of paper that comes with the medication and details the possible downsides.
Meantime, if you're reading this, on statins, and feeling perhaps 20 years older than you feel you should, you now know what to do.