No, I don't take or abuse my pain medicine frequently. I don't want my tolerance to build up so I try to leave a MINIMUM of four days between doses, ideally a week if I can manage it. And I don't actually feel cold - I just shiver. It reminds me of when I was in the hospital giving birth and they gave me Demerol and I was fine until the baby was born and then just after I started shaking uncontrollably. They said it was a reaction to the meds. But I get this EVERY TIME I take my pain meds. Just wondering why?