I'm on oxycodone and 600mg ibuprofen every 4-6 hours for a lower back sprain., can i replace the ibuprofen with robacacet? the pain is still intense.

No.: These are similar narcotics. What you need is a good doc. A back sprain never requires heavy narcotics such as you are taking. Get a second opinion or should I say a third after mine. If your diagnosis does not change (I doubt it.) switch to a Pain Management specialist. Prolonged pain can change the way you brain feels pain. This must stop. Do not become a doctor-caused addict.