I recently injured my back and was prescribed percocet 10/325 mg. and valium 10 mg for pain and for muscle spasm. My doctor recently discontinued the percocet, and replaced it with tramadol 50 mg. However, she was concerned that the tramadol would interact with my current medications. I am currently taking prozac, adderall, xanax XR, and abilify. My doctor said that my serotonin levels may become too high. What symptoms would occur if my serotonin levels did become too high? Also, the tramadol seems to do nothing for my pain, it actually has no effect on me that I can tell... Any advice?