My repeated contribution to such debates is this.
An ENT consultant, looking into my tinnitus 20 years ago, suggested investigating my sinuses rather than my ears, and he was right. ‘Flixonase’, a powerful sinus clearer, worked wonders for me, reducing my tinnitus from a maddening 8 or 9/10 down to a manageable 2 or 3.
Only works where the sinuses are blocked and thus contributing to the imbalance, but worth bearing in mind.
Sqad will doubtless have a more expert view.
A