I had a heart attack and two stents put in, I have bad side effects on all statins, finely I tried crestor 5mg for a month and my cholesterol wend way down, I started having chest pains and back pains upper lower anytime I try to do anything my mussels tighten up and poping, the pain gets real bad so I stopped taking it and had a attack twice as I couldn't breath or hardley move my mussels from the burning pains and had to go to emergency room, I stopped taking it but chest back pain remains when I try doing anything, the more I do the worse the pain were I can't move but if I rest pain stops, I am no longer taking crestor but might have nerve damage, I read it can cause permanent mussel nerve damage.