Every kind of drug addiction, whether to a smaller extent or a larger extent, is harmful. Instances of addiction to this oxi contin drugs have increased in recent years. Long term usage of this drug can lead to physical dependence. A large dosage can even cause severe respiratory depression that may lead to death. So be careful. Too much taking of these drugs, which may initially seem to be improving your life, may actually cause damage to your health as well as your life in the long run. So, I would suggest that it’s better you quit this as soon as possible and go for some rehabilitation, so that, you don’t get involved in any such addiction again, further in your life.