Methadone
"Methadone can be very useful for some types of chronic pain.  For those who need larger doses of narcotics, methadone does not cause tolerance like morphine or oxycodone so you do not have to keep raising the dose to keep your pain in control.  It does take time to kick in so be patient.  Oxys or MS can be given to help till Methadone kicks in.  Any narcotic can have side effects like constipation.  A good doc will help you PREVENT such problems.  As for comments that kick backs and conspiring with drug companies, we are under intense monitoring as some people sell the drugs to others or overdose and die.  We must see patients often to prevent problems like this.  If not, we loose our license or get sued.  It's called good medical care."