Actually, you should first look at meds if you take a statin or some blood pressure meds. That is always the first suspect unless you are heavy into sports, etc. I took a stain years ago and almost crippled me u until I switched to Candesartan which does not seem to have those muscle issues. A lot depends on your age, activities, etc. to see what the issues may be. Those over-the-counter products never seemed to work for me, I've tried them all.