Is there any oxycodone and ritalin (methylphenidate) interaction?

Behavior change: I would be cautious about combining these medications because there can be behavior changes that could result. These medications both have abuse potential and this is related to the elevations in Dopamine that can be associated with both. However, both medications should work in their intended way if taken in appropriate amounts. Be sure to only proceed with the supervision of a physician.

No: No major side-effect but neither one oxycodone should not be a long-term medication in most cases.