To get around that law, the makers of
GTA and
GTA-Forte do not reveal the amounts of T4 and T3 (if any) that are present
in these products. Basically, how much thyroid hormone is present is anybody's guess.
In 2012, I tried Liothyronine (the generic version of Cytomel). The Liothyronine caused me to have heart issues, and I discontinued the Liothyronine after only a few days. This year, I've had the heart issue called bradycardia from time to time.