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Blood test shows underactive thyroid. Light headed, breathless. Taken antibiotics for chest infection. How long to work?

I recently had a blood test that came back showing I had an underactive thyroid; recently I have been overtired and light headed and breathless , my doctor originally thought it might be a chest infection so he gave me antibiotics which gave me terrible heartburn that resulted in me going to hospital thinking I was having a heart attack where they took a blood test which indicated the underactive thyroid. I have to wait several days before I can see my doctor, I have heard that the medication that you get for hypothyrodism is for life and this concerns me; however walking normal distances, say about a mile gets me very out of breath so I welcome anything that wll sort the problem; how long does it take for the medication to take effect? I read that you have to be titrated to find the correct dosage. I m only 31 and feel like a much older person at the moment and it s causing me no end of anxiety and distraction.
Asked On : Sat, 16 Feb 2013
Answers:  1 Views:  89
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General & Family Physician 's  Response
Your symptoms of fatigue and tiredness are due to hypothyroidism.
Since there is a deficient production of thyroid hormone,it has to supplemented from outside and that too for life.You would start feeling the effect of medicine in 4 weeks time and all your symptoms due to hypothyoroidism shall take 4 to 6 months to settle.
You are correct that the correct dosage has to be titrated by regular estimation of TSH levels every 4 to 6 weeks and modifying the dosage accordingly.
There is no need to develop any anxiety or stress due to your hypothyroidism.
Answered: Sun, 17 Feb 2013
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