susansantafe,

Generally these post market studies are done by institutions (universities, large clinincs) or the drug company. I think it is unlikely they will do any this far out from the drug release. I have been pushing for a case study report for my pseudogout. So far I have not found any takers. I was thinking if enough case studies were reported that might raise some red flags.
I did contact the FDA about the pseudogout. I was uncertain about the tinnitus. But now with you also experiencing ototoxicity, I should report my tinnitus to them. You could do that as well.