I started taking T3 a couple of months ago alongside 150mg of T4.
I started T3 on 6.25mg and slowly upped it whilst checking my pulse and temperature. I am now on 25mg of T3 and still on 150mg of T4. I did drop the T4 down to 125mg and then 100mg but felt so dreadful I upped it again.
My pulse and temperature are still lower than they should be and I'm still exhausted.
I don't know whether I need to up the T3 even more or lower T4 or both.