I don't know what happened to my ears after I started taking for several days D3 vit, my ears started to buzzing and ringing, i have been taking 2,000 ui /daily . I have low D, test results is 10,3ug/L(20-80). I think that i have developed tinnitus in my ears and don't think it is a coincidence, is really starting to bother me when I go to sleep and wake up in the morning(it is too loud). At the same time I started taking B12(1000ui). I take the both supplements after 4, 5 hrs taking my thyroid hormones. Any advice would be helpful!