It took me 8 years to feel normal after my TT. That is the time it took me to realise that I was right and my GP was wrong; levothyroxine was the wrong medicine for me to take and there are alternatives to it that he never told me about. I once had the utmost faith and trust in my GP but not any more and never will.
Started on NDT, brand Thyroid-S and felt much better almost immediately. I never took any T3, except during RAI treatment, and would never transfer back to combined T3/T4 as that would involve taking T4 again, a product that I look upon as being poisonous to me.
During those 8 years I increased the dose and felt better, then reduced it as I again became ill, then increased it again.........never found the correct dose as it was the wrong medicine.