This has been going on for well over a year. It is truly a nerve wracking symptom. I started wondering if maybe it was something with my sinuses and for some reason I thought maybe it had to do with yeast/fungus so got some Yeast-Cleanse by Solaray and have been taking 1/2 a dose daily for 3 days and today a miracle happened….the ringing stopped. I feel so clear headed and calm. The inside of my head is quiet! Its like someone was running a jackhammer outside my window for a year and then one day stopped. I am so thankful. So if this is a symptom thats bothering you you may want to give it a try.