Bests & Worsts Reviews from Amazon

I had blood work done because I have an autoimmune thyroid disease. My endocrinologist said my vitamin d level was 28 and normal was 30-100 so she wanted me to take some extra vitamin d. I ordered this and started taking 2 (10,000 iu) every night. I did this for about 6 months and then I asked her to run my vitamin d level again with my thyroid labs. My level was 100.4! She told me to back off the supplements because I was approaching toxic levels. So now I just take 1 every night. I'll have my labs done again in 6 months. Needless to say, I can attest 100% that this supplement works! And I love how tiny it is. So easy to take.