I've had it!
I can't seem to feel better with added t3!!!!
I have tried all sorts of t4 and t3 combos and i believe i felt most alive when my frer t4 was high in range!
We have tons of t4 receptors in the brain and CNS...most of those receptors need t4 and can't use direct t3.
No wonder i feel brain dead on an increase amount of t3 and low dose t4.
I will try to post a very informative link soon