Hello! I am 65- I have been taking generic Atorvastatin/calcium for about a year-- I am a cancer survivor in 2012-- I read the attached to my prescription and it mentioned a muscle problem could occur. I mentioned this to my doctor along with the spasms and cramping I have been experiencing and he didn t seem alarmed about it but my cramps and spasms sometimes occur when I am just standing and not exerting any-- I can lift heavy things( stocker at a walgreens/ photo specialist) with out any cramping-- sometimes when I buckle my seatbelt my side cramps or if I lean over to pick up something my lower back muscles cramp-- I put my coat on and my shoulder blade muscles cramp--- very odd. My doctor says all I need to do is stretch before work or before I exert any physical movements--Like right now while I am typing my shoulder blade muscles are cramping. I think there is more to it so that is why I am asking about the atorvastatin and it s side effects. Thankyou