Last year, Fall of 2015, I was diagnosed with hyperthyroidism and tested positive for the Graves antibodies. My doctor started me on 15 mg of methimazole, and I became hypothyroid. She reduced the amount to 5 or 10 mg. of methimazole but I still became more hypothyroid, and then we went down to 2.5 mg of methimazole at which point my FT3, FT4 and TSH levels were decent. She then took me off the medication at the end of May 2016. Following up, 6 months later, my FT3 and FT4 were high and my TSH nonexistant, and so I again started on methimazole 2.5mg per day from November until today.
Here are my test numbers and ranges up to now:
TSH FT3 FT4
Range 0.27-4.20 2.40–4.40 0.93-1.70
11/21/16 <0.01 5.69 2.25
1/3/17 0.01 3.32 1.42
3/3/17 0.22 2.65 1.20
I have an appointment with my Doctor this next week, but she sent me a note that I might try doubling up my methimazole to 5 mg for one day per week, and then continue with the 2.5 mg for the other 6 days, but as I read my 3/3/17 test results, my numbers are a little low, not high. If the optimum for FT3 is 75% of the referance range then that number is 3.90 for my lab, and if the optimum for FT4 is in the top half of the reference range, the 50% point starts 1.32 for my lab, and so I think I should be taking a little less methimazole rather than a little more. My doctor is very open to any input from me. Does anyone have any advice? Should I skip a dosage fo methimazole a day or two each week, or should I drop down to 1.25 mg every day or a few days each week?