My recent TSH test result is 3.42. I have been taking 125 mcg of thyroid medication for years, but I am still not getting relief and continue to gain weight. A doctor I consulted for back pain mentioned that the medicine I am taking could be fake, since my thyroid is in range but my dosage is high. What mcg dose should I actually be taking?

Answered by 1 Apollo Doctors

Dr Rohinipriyanka Pondugula

General Practitioner

MBBS
9+ Yrs

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TSH 3.42 is slightly above optimal, especially if on 125 mcg for long. Continued symptoms suggest your dose or medicine brand may not be effective. Recheck thyroid profile with T3/T4 and TSH. Switch to trusted brand if needed.

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Answered 17/09/2025

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