Originally my thyroid test came back as TSH and T3 fine but extremely low T4s I was treated, over the course of 6mths, with increasing levels of Synthroid until we reached 112. All the horrible symptoms that I have been having for 15 years went away; headaches, muscle pain and swollen joints (gone), hair loss (my eyebrows have grown back), brittle nails (I finally have nails that are not cracked and bleeding), weight gain (I was able to lose 20lbs through diet and exercise) insomnia (I can sleep through the night), fatigue (I don't have to take a nap during the middle of the day in order to function) dry skin, etc, etc, etc. I had no hyperthyroid symptoms. Now my doctor is saying that on the results of my most recent test I have an excess of T4 (1.99) and it is suppressing the TSH (0.016). He has lowered my dosage to 100 and 112 every other day and now all of the symptoms are coming back. What is a girl to do?