They usually prescribe tramadol, however, a couple of years ago research determined that tramadol does not convert to an opiate in dogs, as it does with humans, so it is not as effective as a pain med as previously thought, but it does have sedative qualities, and that helps reduce pain. It has minimal side effects.
Often vets prescribe a low dose of rimadyl for 2 or 3 days, probably more effective for pain. There are potential side effects (gastrointestinal distress) but only if the dog is on it long term, more than a couple of weeks.
PS: keep an eye out for gastrointestinal upset (loose stools, vomiting , poor appetite)
caused by the antibiotic.
Sometimes the vet can prescribe a different antibiotic if side effects occur.
