Levothyroxine is a synthetic form of the thyroid hormone thyroxine. It is used to treat an underactive thyroid gland (hypothyroidism). It works by replacing or providing more thyroid hormone.

Levothyroxine FAQ


What is Levothyroxine used for?

Levothyroxine is used to treat an underactive thyroid gland (hypothyroidism). It helps to restore the balance of thyroid hormones in the body.

How long does it take for Levothyroxine to work?

It may take several weeks before you notice an improvement in your symptoms. It is important to continue taking this medication as prescribed by your doctor.

What are the possible side effects of Levothyroxine?

Common side effects may include hair loss, weight loss, tremors, headache, feeling nervous or irritable, and irregular menstrual periods.

Can I take Levothyroxine with other medications?

You should inform your doctor about all the medications you are currently taking, as some drugs may interact with Levothyroxine, affecting its effectiveness.

How do I take Levothyroxine?

Take this medication by mouth as directed by your doctor, usually once daily on an empty stomach, 30 minutes to 1 hour before breakfast.

What should I do if I miss a dose of Levothyroxine?

If you miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose. Do not double the dose to catch up.

Is there a generic version of Levothyroxine available?

Yes, there are generic versions of Levothyroxine available. They are typically more affordable than the brand-name versions.

Can I buy Levothyroxine online without a prescription?

Levothyroxine is a prescription medication, meaning you will need a valid prescription from a healthcare professional to purchase it from a reputable online pharmacy.

How long should I take Levothyroxine for?

You should take Levothyroxine for as long as your doctor has prescribed it. Do not discontinue the medication without consulting your doctor.

Can Levothyroxine be used for weight loss?

Levothyroxine should not be used for weight loss. Using this medication for purposes not indicated by your doctor can lead to serious and potentially life-threatening side effects.

How does Levothyroxine work in the body?

Levothyroxine works by replacing or providing more thyroid hormone, thereby helping to regulate energy levels and metabolism.

Is Levothyroxine safe to use during pregnancy?

It is generally considered safe to use Levothyroxine during pregnancy. However, dosage adjustments may be necessary. Consult your doctor if you are pregnant or planning to become pregnant.

How often should I have my thyroid levels checked while taking Levothyroxine?

Your doctor will determine how often you need to have your thyroid levels checked. Generally, periodic monitoring is necessary to ensure the medication is effectively managing your condition.

Are there any dietary restrictions while taking Levothyroxine?

It is recommended to take Levothyroxine on an empty stomach, at least 30 minutes before eating. Certain foods and supplements may interfere with the absorption of the medication.

What precautions should I take before starting Levothyroxine?

Before starting Levothyroxine, inform your doctor about any medical conditions you have, especially heart disease, diabetes, adrenal gland problems, and any allergies you may have.

Can I drink alcohol while taking Levothyroxine?

Alcohol may interfere with the absorption and effectiveness of Levothyroxine. It's best to consult your doctor regarding alcohol consumption while on this medication.

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