Maybe it does something, but tinnitus tends to simple improve over time, too: [1]. Again not a great study as unclear what treatment options people sought, but they have zero evidence of efficacy as I understand it. It’s inaccurate to call these “double-blind” because there is no control group.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC128822/#!po=32....