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    Information about Thyroxine/Levothyroxine

    Thyroxine/levothyroxine uses

    Thyroxine/Levothyroxine is used in the treatment of hypothyroidism.

    How thyroxine/levothyroxine works

    Thyroxine/Levothyroxine is a synthetic version of a hormone produced by the thyroid gland. It works by replacing the thyroid hormones that your thyroid gland cannot produce and relieves the symptoms of hypothyroidism (tiredness, weight gain, and depression).

    Common side effects of thyroxine/levothyroxine

    Anxiety, Vomiting, Diarrhea, Palpitations, Nervousness, Weight loss, Sweating, Flushing (sense of warmth in the face, ears, neck and trunk), Restlessness
    Content Details
    Written By
    Dr. Lalit Mohan Gupta
    MD (Microbiology), MBBS
    Reviewed By
    Dr. Varun Gupta
    MD (Pharma), MBBS
    Last updated on:
    22 Mar 2019 | 02:50 PM (IST)
    Want to know more?
    Read Our Editorial Policy

    Available Medicine for Thyroxine/Levothyroxine

    • ₹121 to ₹220
      15 variant(s)
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      Glaxo SmithKline Pharmaceuticals Ltd
      6 variant(s)
    • ₹107 to ₹218
      Macleods Pharmaceuticals Pvt Ltd
      10 variant(s)
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      Lupin Ltd
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      Macleods Pharmaceuticals Pvt Ltd
      1 variant(s)
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      Eris Lifesciences Ltd
      6 variant(s)
    • ₹51 to ₹150
      Intas Pharmaceuticals Ltd
      9 variant(s)
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      Akumentis Healthcare Ltd
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      Comed Chemicals Ltd
      5 variant(s)
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      Primus Pharmaceuticals
      9 variant(s)

    Expert advice for Thyroxine/Levothyroxine

    • Your doctor has prescribed Thyroxine/Levothyroxine to replace the natural thyroid hormone that your own thyroid gland can no longer make.
    • It is best to take it on an empty stomach (ideally, first thing in the morning). No food, milk, or tea should be taken 1 hour before and 2 hours after taking this medicine.
    • It may take 6 to 8 weeks to get the full effect.
    • For most people, Thyroxine/Levothyroxine is a lifelong medication. Do not discontinue it without discussing with your doctor.
    • Inform your doctor if you have diarrhea, nervousness, irritability, sleep disturbances, shaking hands, or chest pain. Your doctor may adjust your dose.
    • Leave a gap of at least 4 hours before taking any antacids, calcium or iron supplements, and multivitamins, as these may interfere with the effect of the medicine.
    • Get your hormone levels checked regularly and inform your doctor if you notice a significant change in your body weight. The dose may need to be adjusted.
    • Inform your doctor before changing the brand of Thyroxine/Levothyroxine as all brands may not have the same effect.

    Frequently asked questions for Thyroxine/Levothyroxine


    Q. Can I take Thyroxine/Levothyroxine during pregnancy?

    Thyroid hormone is naturally present in the body and is therefore safe to take in pregnancy. In fact, it is very important that pregnant women or those planning to become pregnant have normal thyroid hormone levels to provide a suitable environment for the baby. If you are already taking thyroid hormone, your dose may be increased by your doctor. Hence, you may have to get your thyroid hormone and TSH levels measured once you know that you are pregnant. You should discuss the timing of thyroid blood tests with your doctor, but often thyroid tests are done every three months.

    Q. Does Thyroxine/Levothyroxine interact with any other medications?

    Thyroxine/Levothyroxine can interact with several medicines. Do not take any medicine without talking to your doctor.

    Content on this page was last updated on 22 March, 2019, by Dr. Varun Gupta (MD Pharmacology)