I had a thyroid problem years ago I put on so much weight I could not believe it, then my hair started to fall out, I was freezing cold AND I would be sitting there talking to someone and just fall asleep!!! Was scared to death to go to the doctor, but because of having to drive decided to go I was just amazed that the thyroid could cause such problems!! In one month after starting the medication went right back to my normal size 8 from a size 16 I had become!!! The pill is SO SMALL was so hard to believe that LITTLE pill could have such an effect!!!