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Medullary thyroid cancer develops in cells in the thyroid gland that m"...
Levo-T Side Effects Center
Medical Editor: John P. Cunha, DO, FACOEP
Levo-T (levothyroxine sodium) treats hypothyroidism (low thyroid hormone). It is also used to treat or prevent goiter (enlarged thyroid gland), which can be caused by hormone imbalances, radiation treatment, surgery, or cancer. Levo-T is a replacement for a hormone that is normally produced by your thyroid gland. This medication is available in generic form. Common side effects include hair loss during the first few months of treatment. This effect is usually temporary as your body adjusts to this medication.
Dosage of Levo-T is individualized. Levo-T may interact with lithium, amiodarone, antidepressants, or radiation therapy with iodine. Many other drugs can interact with Levo-T. Tell your doctor all medications and supplements you take. Other drugs can be taken while taking Levo-T, but they must be taken 4 hours before, or 4 hours after taking Levo-T. Consult your doctor. Current information shows Levo-T may be used during pregnancy. Tell your doctor if you are pregnant because your dose may need to be adjusted. This medication passes into breast milk but is unlikely to harm a nursing infant. Consult your doctor before breastfeeding.
Our Levo-T (levothyroxine sodium) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
Levo-T FDA Prescribing Information: Side Effects
Musculoskeletal: tremors, muscle weakness;
Dermatologic: hair loss, flushing;
Endocrine: decreased bone mineral density;
Pseudotumor cerebri and slipped capital femoral epiphysis have been reported in children receiving levothyroxine therapy. Overtreatment may result in craniosynostosis in infants and premature closure of the epiphyses in children with resultant compromised height.
Seizures have been reported rarely with the institution of levothyroxine therapy.
Inadequate levothyroxine dosage will produce or fail to ameliorate the signs and symptoms of hypothyroidism.
Hypersensitivity reactions to inactive ingredients have occurred in patients treated with thyroid hormone products. These include urticaria, pruritus, skin rash, flushing, angioedema, various GI symptoms (abdominal pain, nausea, vomiting and diarrhea), fever, arthralgia, serum sickness and wheezing.
Hypersensitivity to levothyroxine itself is not known to occur.
Read the entire FDA prescribing information for Levo-T (Levothyroxine Sodium Tablets) »
Additional Levo-T Information
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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