I've had tinnitus for around 15 years now. I've followed the research pretty closely. One thing to be especially weary about is the placebo effect. For some reason it's especially bad when it comes to tinnitus. I think that's how so many snake oil products can thrive in this area.
Back when they were doing the OTO-313 study a year or so ago, I read several reports from people who were in the study the drug had made their tinnitus go away (one on the TinniusTalk forums, and a few in a tinnitus Facebook group). However, when the results came back, the drug did not beat placebo. A similar thing happened with the FX-322 drug (that one was for hearing restoration but people were hopeful it could address tinnitus too).
Back when they were doing the OTO-313 study a year or so ago, I read several reports from people who were in the study the drug had made their tinnitus go away (one on the TinniusTalk forums, and a few in a tinnitus Facebook group). However, when the results came back, the drug did not beat placebo. A similar thing happened with the FX-322 drug (that one was for hearing restoration but people were hopeful it could address tinnitus too).