Sugar has delt with back issues for about the last 6 months. When she has a really bad spell (the worst was the day before Thanksgiving she could barely stand, couldn't walk at all) both the ER vet and my vet said she could have 1-2 50 mg Tramadol, 3-4 times a day. She was also put on pred. I gave her 1 Tramadol 4 times a day for the first few days. It took her a couple of days (2-3?) to really start to feel better. Acupuncture has helped, also Adequan shots. I can see the concern about them feeling better and reinjuring, but for the first few days, getting the pain under control is more important. Just my , not a vet!
Hoping poor Otis feels better soon!