I have required Thyroid replacement therapy for 29 of my 69 years on earth, and I have been prescribed various FDA-approved pharmaceuticals, including Synthroid, Thyrolar, etc. In each case, I broke out in hives! I do not know what particular chemical that is in these medicines that I am allergic to, but I am NOT allergic to the compounded Thyroid hormone therapy. I would prefer to buy cheap HRTs that insurance would pay for, but I simply CANNOT TOLERATE them. So instead, I self-pay for the cBHRTs that I can take. PLEASE DO NOT RESTRICT COMPOUNDED HORMONE THERAPIES!!! I don't know how I can function without the only form of thyroid my body can tolerate.