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Pcos and thyroid medication
Need Expert Opinion: Levothyroxine Before Pregnancy
My wife is 26 years old and has been diagnosed with PCOS. She has irregular and delayed menstrual cycles, and we are actively planning to conceive.
Her gynecologist has prescribed the following medications:
Novelon for 3 menstrual cycles
Normoz-Met twice daily
Folmet NM once every morning
Coenzyme Q10 (300 mg) once daily at night along with the evening dose of Normoz-Met
As part of her preconception evaluation, we got her thyroid profile tested. The results are:
TSH: 3.75 µIU/mL
T3: Normal
T4: Normal
Anti-TPO antibody: 2.01 (negative/within normal range)
Based on these reports, her gynecologist advised starting Levothyroxine (Thyronorm) 12.5 mcg once daily to optimize thyroid function before pregnancy.
However, another doctor reviewed the same reports and questioned the need for thyroid medication.
Answers (8)
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This is an important question and the answer is clear: your wife's gynecologist is correct in prescribing Levothyroxine 12.5 mcg. Here is why. While TSH 3.75 µIU/mL is within the normal population reference range (0.4â4.5), the target is DIFFERENT for women who are planning to conceive. According to current guidelines from the American Thyroid Association and Indian endocrinology guidelines on preconception thyroid management, the recommended TSH target before and during pregnancy is below 2.5 µIU/mL in the first trimester and preconception period. Your wife's TSH of 3.75 is above this preconception target. A higher-than-ideal TSH (even if 'technically normal' for the general population) in early pregnancy has been associated with increased risk of miscarriage, reduced fertility, and impaired fetal brain development. The dose of 12.5 mcg (which is the smallest available dose of Thyronorm) is very safe, very low, and specifically calibrated to bring the TSH down to below 2.5 without causing hyperthyroidism. The negative Anti-TPO antibody is reassuring â it means there is no underlying autoimmune thyroid disease â but preconception TSH optimization is still recommended. The second doctor who questioned this advice was likely applying the standard general population range, not the stricter pregnancy-specific range.
Next Steps
Continue Levothyroxine 12.5 mcg as prescribed. Recheck thyroid profile (TSH) after 6â8 weeks to confirm TSH has come below 2.5. Also continue all other medications as prescribed by your gynecologist. Once pregnant, thyroid levels should be checked every 4â6 weeks and dose adjusted accordingly. Please consult me directly on Practo for a detailed evaluation.
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For preconception period and during pregnancy, target TSH is 2.5- 3
So if she is planning to conceive you have to get the optimum TSH level
But as you are taking Novelon now, so pregnancy is not possible for coming 3months
So better to get TSH tested after 2months and to start medicine if it is still above 3
But much said your gynaecologist should be trusted with his/her opinion
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Please share the thyroid profile report.
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Dr. Kinnari Amin
Gynecologist
12 yrs exp
Ahmedabad
As you're planning for conception, tsh should be less than 3
So continue medicines
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Dr. Neha Vashisth
Obstetrician
14 yrs exp
Jaipur
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Dr. Nirav Jetani
Gynecologist
11 yrs exp
Vadodara
Plan pregnancy once TSH level is below 3
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Dr. Vijaya Gupta
Gynecologist
22 yrs exp
Chandigarh
TSH preconceptionally should be less than 2.5
Your wife needs to take thyroid medication to achieve euthyroid levels
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Disclaimer : The content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding your medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.