Methadone
"I made the mistake of taking methadone for 6+ years. It first was given to me for substance abuse, which kept me clean. 2yrs later I learned I was diagnosed with Lupus, Fibromyalgia,  Rheumatoid Arthritis, Neuropathy, and my teeth are breaking from lack of bone nutrition. So now I take it for pain. Methadone has caused my teeth to fall out. And doctors say methadone assisted in these diagnosis. I'm stuck on it now per doctors orders, if not the withdrawals could kill me since I also have high blood pressure.  I recommend if anyone does get methadone to just use it for 3-6 months at no higher that 65-75mg. The higher you go the more tolerance your body makes. Please research the drug to see if your a good candidate for short/long term use."