Hi been on t3 10 mcg and thyroxine 50mcg for 6 weeks now,tsh was 7.83,free thyroxine 8.7,lab did not do t3.
I have now started 2omcg t3 and 50 mcg thyroxine today.Feel odd ,very lethargic and head hot,vey achy leg muscles. No palps but fuzzy on excertion.Is this ok ,I did feel a bit like this when I first started t3 and it got better,but still not great.
I do not know if I feel bad due to high TSH or what.
Does t3 have an immediate effect on TSH or does it take time to fall as when on thyroxine alone ?
Written by
susiebow
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T3 is absorbed into your bloodstream very quickly and thereafter it's effect lasts between 1 and 3 days. You were taking the equivalent of 90mcg levo before you increased by another 10mcg T3 equal to approx 40mcg T4 total approx equal to 130mcg levo.
I would just relax and give your new dosage at least 2 weeks to settle down. Take your pulse/temp several times a day and keep a record. If you get too hot or pulse too fast, you may have to reduce slightly.
Your TSH should have reduced with your increase of medication.
Susie, TSH doesn't respond immediately to T3 but may respond a little quicker than it does on T4 only. You still need to be on an optimal dose before TSH will be in the low-normal range. If the 10mcg increase isn't comfortable cut back by 5mcg for a couple of weeks before increasing to the full 10mcg.
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