Question: I have a 98 year old Grandma who has been extremely healthy her all of life and recently acquired persistent back pain for no known reason. She has been fortunate to NEVER have any medical problems, other than some loss of short term memory as a result of her old age. She has never had any heart attacks, strokes, physical injuries, or surgeries. She is a sweet, skinny old lady who has always been active. These recent complaints of severe regular back pain caused me to take her to the E.R. last week, where they did a urine test and CatScan/CT Scan (please excuse my misspellings of medical terms). The results were nothing. They can't find anything wrong with her. I've taken her to a chiropractor as well and still no one can figure out the source of this pain. So now it's just been a matter of helping her cope with the debilitating pain. She has no allergies but will not take Codeine or other similar strong pain pills because it makes her nauseated and vomit (even when taken with food and anti-nausea pills). The E.R. prescribed Ketorolac for the pain along with an anti-nausea pill. I've been following those instructions giving her that medication as well as using heating pads and other non-medical methods such as pillows under her back, different sitting, reclining, laying positions, etc. The chiropractor said she just needs to walk more. She's always walked a lot before this back pain problem however it's difficult to get her to walk now with so much back pain...nonetheless, I do try to make her walk a little. Still no relief for her. I tried getting into her doctor but he is completely booked. My question is this...can I stop the Ketorolac pain pill and try giving her Carisoprodol Naproxen (Soma muscle relaxer)? Would there be any drug interaction if I did that? If so, could I wait a number of hours for the Ketorolac to be out of her system and then safely try the XXXXXXX muscle relaxer. Please advise...also I have left voicemail messages for her doctor's nurse so I do intend to inform them that I'm going to try this, though I have already been told that they are booked and can't see her anytime soon. Haven't received a return call from the nurse or doctor yet so I am about to just try the Soma/Carisoprodol Naproxen. Any thoughts on that??