So I imagine if you take t3 it would signal your body to stop producing t4 since the body produces t4 and it converts to t3. (Correct me if I am wrong with any of this) But my questions is that if you take t3 and it lowers your natural t4 levels, is there any negative affect of having low t4 but elevated t3. Would it make anymore sense to take t4 with t3 to not put your body out of a natural balance?

I am just curious and started to think about this the other day, not currently taking either.