Propoxyphene
"I took propoxyphene several years ago for a neck ache and had good luck with it so when I developed a moderately painful shoulder pain that wouldn't go away I asked my doctor for it again. I am limited to what I can take for pain because I take anti-coagulants but propoxyphene does not seem to affect my prothrombin-time. It reduces my pain with no side effects that I have noticed. I only have taken it for short term use though, so have no long term experience with it."