I have always had very good cholesterol but on last blood test about 2 weeks ago , good cholesterol was still high , but the bad one had gone up. He put me on simvastatin which is a statin drug . He did that one time a few months ago and after about 2 weeks I stopped it by myself because it was causing terrible muscle cramps in my legs and fingers. He cut the dose in half for 2 weeks and then said I should continue with full dose. I'm not going to do it because of previous experience. I'm also getting heart palpitations due to an irregular heart beat and alot of stress. People have told me to take coq10 which will help everything but there are so many brands on the market and I don't know what would be the best dose. I'm 78 and have been in great health till now. Please give me some feedback. Thanks