I had nasty tinnitus, primarily in my right ear, before I finally figured out the cause. My acid reflux was creeping up into my right ear tube. That is, the tube that connects the ear canal to the throat. I doubled down on the Prilosec. Instead of one pill a day, I went to twice a day. Within a day of doing that, the tinnitus went away. I'm a pretty big guy, 6'4", 200 lbs, so I'm guessing the average dose isn't quite enough for me. None the less, I've read, long term use of Prilosec, has other side effects. Primarily having to do with bone density. I've been trying to get off the purple pill for years, but every time I get down to less than one a day, the acid creeps back. Therefore, I'm going to double down for only a week, then try to get back to one a day. Now that I know what causes the tinnitus, I suppose I'll just have to double down when necessary. The lesser of two evils, I suppose. For all of you tinnitus sufferers, I hope this helps some of you out.