Medication leaflets

Active substance

Results for the substance levothyroxine

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About this active substance

Levothyroxine is a medication used to treat hypothyroidism, a condition in which the thyroid gland does not produce enough thyroid hormones. It is a synthetic form of the hormone thyroxine (T4), which replaces or supplements the body's natural thyroid hormones. It is also used to prevent and treat goiter (enlargement of the thyroid gland) and, in some cases, as part of therapy for thyroid cancer.

Levothyroxine helps regulate metabolism, body temperature, heart rate, and other essential functions controlled by thyroid hormones. The medication is taken orally, usually once daily in the morning on an empty stomach, to ensure optimal absorption.

The dosage is individually adjusted based on thyroid hormone levels and the patient's response to treatment. It is important for patients to strictly follow their doctor's instructions and not discontinue the medication without medical advice.

Side effects may occur if the dose is too high or too low and include symptoms such as palpitations, nervousness, insomnia, weight loss, or, in rare cases, allergic reactions. Regular monitoring of hormone levels is essential to ensure the treatment's effectiveness and safety.