Prior to taking this medication, and before being diagnosed with hypothyroid, I had gained weight, was always cold and fatigued, my hair was falling out, and my fingernails were brittle. I was prescribed an FDA approved prescription medication by my PCP that proved to be ineffective. I changed doctors, and he started me on my current cBHT. I began feeling better and seeing positive results within two weeks. I have been on cBHT ever since and that was 20 years. This regiment works, and has for years and I see NO reason for the FDA to interfere with something that is positively helping people.