Been seeing docs since childhood. ADHd, bipolar, anxiety. On lamictal, lithium, klonopin, vyvanse, opana and symbyax (fluoxetine and olanzapine). Chief complaint anhedonia. Advice?

Drug interactions. Your symptoms are possibly related to the number and types of medications that you are taking. Please consult your psychiatrist or personal physician for a complete medication review.
The meds. The one thing that stands out about this regimen is the oxymorphone which is an opiate for moderate to strong pain. So this could cause anhedonia but very careful with its use as it can easily become habit formed, addicting, and can slow down breathing. I hope that it's not being used for psychiatric purposes as it has no place. Please ask you doctor for much safer alternative at any rate. :)