What is the difference between oxycodone and oxycodone er?

Methadone is a synthetic Opioid that is extremely potent and takes a long time to metabolize. It is a different drug that Oxycodone. Methadone is mainly used as a treatment for heroin and other opiate addicts. It can be administered once a day and we keep withdrawal effects from coming on. However, methadone itself is extremely addictive, and the methadone patient will be swapping, lets say, a heroin addiction for a methadone addiction. But methadone can be administered in a controlled and much safer environment.

Oxycodone ER is just Oxycodone extended release or something like Oxycontin. The point of this drug is to release oxycodone continuously over a period of time. The difference between the two drugs is just simple that they are two totally different drugs. They do produce some similar effect, but when you break it down, Methadone is totally different than Oxycodone. Their chemical makeup is very different I believe.