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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Dosage Of Thyronorm Should Be Taken To Regularize TSH Levels?

Hi, I am 28 years and have hypothyroid . My TSH level was 30 and I was prescribed Thyronorm 100 mg once daily and I took it regularly. After couple of months got the TSH test done . It has dropped to 0.01. Next i was advised a dosage of 75mg and took it regularly for a month. Now when i got the test done, it has increased to 9. how much mg should i take??
Wed, 3 Aug 2016
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General & Family Physician,  's  Response
Hello and Welcome to ‘Ask A Doctor’ service.

I have reviewed your query and here is my advice. Levothyroxine is the treatment of choice for hypothyroidism. Serum TSH should be measured to monitor for adequate replacement. TSH can be taken up to 4 months to normalize.

TSH is measured 6 to 8 weeks after initiation of levothyroxine and then annually once you are on a stable dose of levothyroxine.
You need to take levothyroxine for lifelong continuously without any interruption. Dose is titrated as per serum TSH level and a serum TSH level of 1 to 3 is considered adequate. As you were taking 75 mcg and now your serum TSH level is 9, you have to increase dose by 25 mcg every 6 to 8 weeks, that is you have to take levothyroxine 100 mcg for 6 to 8 weeks.

After 6 to 8 weeks, you again check your serum TSH level, and dose will be adjusted accordingly.
Once you reach a stable dose, you have to take it continuously and life-long. Consult a good endocrinologist of your area for further management.

Hope I have answered your query. Let me know if I can assist you further.

Regards,
Dr. Nishikant Verma
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What Dosage Of Thyronorm Should Be Taken To Regularize TSH Levels?

Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. Levothyroxine is the treatment of choice for hypothyroidism. Serum TSH should be measured to monitor for adequate replacement. TSH can be taken up to 4 months to normalize. TSH is measured 6 to 8 weeks after initiation of levothyroxine and then annually once you are on a stable dose of levothyroxine. You need to take levothyroxine for lifelong continuously without any interruption. Dose is titrated as per serum TSH level and a serum TSH level of 1 to 3 is considered adequate. As you were taking 75 mcg and now your serum TSH level is 9, you have to increase dose by 25 mcg every 6 to 8 weeks, that is you have to take levothyroxine 100 mcg for 6 to 8 weeks. After 6 to 8 weeks, you again check your serum TSH level, and dose will be adjusted accordingly. Once you reach a stable dose, you have to take it continuously and life-long. Consult a good endocrinologist of your area for further management. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Nishikant Verma