Suggest Remedy For Chronic Thoracic Pain

I have chronic thoracic pain from a lung surgery that didn t go well. While I was on naproxen, I felt wonderful. Then a nurse practioner took me off because she thought it was causing my kidneys to fail. My regular doctor disagreed. I have been off for about five years, and have not had a day without constant pain. Can I go back on it? Royandbeverly@hotmailcom