How long after taking methadone will I be able to take oxys?

Prescribed?? If you are a pain patient being prescribed methadone, your prescribing doctor and/or dispensing pharmacist are the ones you should be asking. It depends on the dose of the methadone, the dose of oxycodone and whether a long-acting or short-acting form of oxycodone, also on your tolerance. If not prescribed, you SHOULDN'T be taking either of them, and you should get help for your drug issues.