How long could/should I stop throxine if thyroxine toxic

January 16, 2011

Hi, looking for advice. I was on 75mcg of thyroxine for many years but still had

hypo symptoms, with great difficulty I persuaded my GP to increase my Thyroxine

to 100mcg, and slowly but surely all my hypo symptoms improved. My TSH levels

were very low as expected and I had mild buzzing in my ears ever since.

Recently about 3 or 4 months ago I started having double vision, then came

dizziness. The GP I saw the 2nd time noticed my TSH was very low, think there

was also a note about my liver test although I found out about this indirectly.

She told me I was taking to much Thyroxine. I had already suspected it was

linked to this and had reduced my thyroxine to 75mcg and was referred to my

Endo. 2 Months later my TSH was retested but to my surprise is still very LOW,

this was not commented on by my own GP. I suggested I might be Toxic with T4

which he disregarded. My endo thought it was nerolgicall condition wich he says

this sort of thing hapens a lot during the winter. I do not agree with this

because reducing my throxine to 75mcg made a big difference to my symptoms, yet

my TSH is still very low. I think I'm having difficulty converting T4 to T3 I'm

still not well and still have very loud buzzing in my ears and sight problems. I

plan to discuss all this with Dr P once I get more info from my GP & fill in Dr

P's form.

In the meantime would it be worth while comming off my Thyroxine for a short

while to clear out the backlog of T4. If so how long should/could I do this for,

here are my lab results:-

26/03/04 TSH 0.19, FT4 19

06/05/04 TSH <0.05, FT4 22

29/10/04 TSH 0.07, FT4 22 [TSH 0.15-3.5, FT4 8-27]

15/07/05 TSH 0.58, FT4 16 [TSH 0.15-3.5, FT4 8-27]

03/02/06 TSH 0.23, FT4 17 [TSH 0.15-3.5, FT4 8-27]

10/11/06 TSH <0.05, FT4 21 [TSH 0.2-4.5, FT4 9-24

26/02/07 TSH <0.05, FT4 21 [TT3 1.9 TSH 0.2-4.5, FT4 9-24,TT3 0.9-2.4]

??/11/08 TSH 0.01, FT4 20 [Reference range unknown]

16/09/10 ?????? (MISSING recent RESULTS FOR 100mcg)

20/12/10 TSH 0.04, FT4 20 (ON 75mcg)

Many thanks

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