What medication can be combined with wellbutrin (bupropion) to treat ocd and anxiety?

Quite a few: There are quite a few medicines across multiple classes (SSRI, SNRI, TCA, etc.) that can be added however Rx choice really depends on what symptoms need the "extra help." The goal is to reduce the risk of side effects as much as possible and a lot is dependent on your history/response and prescriber preference. Also, combining psychotherapy + meds helps ensure a better outcome. Hope that helps!