When I was first put on Levothyroxine last year, my TSH was 5.69. The symptoms I had, have all cleared up due to sorting out my low B12 and Vit D deficiency. Is it possible that I could have not actually needed the thyroxine? I'm wondering if I had known that my symptoms were all from the vitamin deficiency, that I could actually have been OK just to sort those! I'd not have gained some side effects from the levo.