Levothyroxine Sodium FAQ
What is Levothyroxine used for?
Levothyroxine is used to treat underactive thyroid, also called hypothyroidism, to replace or provide more thyroid hormone.
How do I take Levothyroxine?
Take it exactly as prescribed by your doctor, usually once a day on an empty stomach, 30 minutes to 1 hour before breakfast.
What are the side effects of Levothyroxine?
Common side effects may include hair loss, weight loss, tremors, headache, and diarrhea. Contact your doctor if you experience chest pain, rapid or irregular heartbeat.
Can I take Levothyroxine with other medications?
Inform your doctor about all medications, vitamins, and herbal supplements you are taking as Levothyroxine may interact with certain drugs.
How long does Levothyroxine take to work?
It may take a few weeks to notice an improvement in your symptoms. Follow your doctor's instructions and attend regular check-ups.
What should I do if I miss a dose of Levothyroxine?
Take the missed dose as soon as you remember, but skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up for the missed dose.
Is Levothyroxine safe during pregnancy and breastfeeding?
It is important to continue taking Levothyroxine during pregnancy as thyroid hormones are vital for the baby's brain development. Consult your doctor for appropriate dosage adjustments. Most women can breastfeed while taking Levothyroxine.
How is Levothyroxine different from natural thyroid hormone?
Levothyroxine is a synthetic form of the thyroid hormone thyroxine. It is identical to the hormone produced by the thyroid gland, whereas natural thyroid hormone includes a combination of T4 and T3 hormones.
Can I switch between different brands of Levothyroxine?
If you need to switch between different brands, consult your doctor. Blood tests may be needed to ensure the dose is appropriate for the new brand.
What lifestyle changes can help manage hypothyroidism?
Regular exercise, a balanced diet, adequate sleep, and stress management can contribute to managing hypothyroidism. It is important to follow your doctor’s advice for lifestyle modifications.
Can I buy Levothyroxine over-the-counter?
Levothyroxine is a prescription medication and is not available over-the-counter. It is important to consult a healthcare professional for proper diagnosis and treatment.
What should I discuss with my doctor before taking Levothyroxine?
Inform your doctor about any heart or adrenal gland problems, diabetes, any allergies, and if you are pregnant or breastfeeding. Also, mention if you have recently received radiation therapy with iodine.
Can Levothyroxine cause weight loss?
In some individuals, particularly those with hypothyroidism, Levothyroxine treatment may lead to weight loss. However, it is important to follow your doctor's advice and not use this medication for weight loss purposes.
Is Levothyroxine the same as Liothyronine?
No, they are different medications. Levothyroxine is synthetic thyroxine (T4), while Liothyronine is synthetic triiodothyronine (T3). They may be prescribed in combination in certain cases of thyroid conditions.
What are the storage requirements for Levothyroxine?
Store Levothyroxine in a tightly closed container at room temperature, away from moisture, heat, and light. Keep it out of the reach of children.
How long can I take Levothyroxine for hypothyroidism?
Hypothyroidism is often a lifelong condition. Most people with hypothyroidism need to take Levothyroxine for the rest of their lives, but the dosage may need adjustments over time.
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Information provided by Maryam Abdullahi-Mahdi. Reviewed by Prof. Vijay Sangar