Hello karen. How r u? I also have used a heating pad, but, I'm having second thoughts now after reading about these innocen easy OD's. This is so horrible! So innocent and its just not right at all! I will now stop with the heating pad to "speed up a little" the effects of the pain med working for me. I especially don't think this s something that should be shared here because of all the innocent new people relying on our experience and knowledge of the patch for their own life. If we choose to "take a risk" like this, its really on us but not something we should share with others. I just feel we have a responsibility like this. Best of hope for you and your endeavors for a more comfortable life. Marla.