hello naproxen to start with should be taken 250mg twice a day and if well tolerated may be gradually increased to 375mg in a weeks time and then after another week 500mg twice a day.since you take gabapentin and tylenol also, I would say 375mg twice daily would be adequate.You may add prilosec 20mg once a day on empty stomach in morning to prevent acidity for stomach irritation. I support a lumbar traction for 10 days if sciatic pain and radiation to limb is there, as distraction on nerve impingement may have a releasing effect, apart from this a lumbo-sacral brace wearing during daytime only to avoid bending and twists to spine.Although brace protects spine but paraspinal muscles should be taken care of by back muscle strengthening exercises by a physical therapist atleast 15 minutes two times a day after removing brace inbetween during daytime.Brace may be removed at bed time and overnight traction be used for removing nerve pressure by distraction of bone surfaces entrapping nerve roots . Best wishes,