Comment by OutOfHere

This is anecdotal info, but if you're suffering severe tinnitus to the point where it cannot be ignored, meaning ≥8/10, a short course of memantine for a few weeks could bring it down by about 2/10, making it more tolerable. The course may have to be repeated as needed about once a year. There probably exist other milder medicines that too could help make it less severe, e.g. mild SSRIs, but their effect usually goes away as soon as you stop taking them.