Merck Ltd
Information updated 18 March 2026
Euthyrox 12.5 Tablet is a prescription medication containing the hormone thyroxine, used to treat hypothyroidism, a condition where the thyroid gland does not produce enough thyroid hormones. As a patient, it's essential to understand the importance of taking your medication as directed by your healthcare provider to maintain optimal thyroid function.
Euthyrox 12.5 Tablet is used to treat the following conditions:
Thyroxine, the active ingredient in Euthyrox 12.5 Tablet, works by replacing the hormone that your thyroid gland is not producing. It helps regulate your metabolism, growth, and development, and maintains the body's energy balance.
Your healthcare provider will determine the correct dosage of Euthyrox 12.5 Tablet based on your individual needs. It's essential to take the medication exactly as prescribed, at the same time every day. The typical dosage range for adults is 12.5 to 300 mcg per day.
Common side effects of Euthyrox 12.5 Tablet may include:
More severe side effects can occur, such as:
If you experience any of these side effects, contact your healthcare provider immediately.
Before taking Euthyrox 12.5 Tablet, inform your healthcare provider about:
Q: What if I miss a dose of Euthyrox 12.5 Tablet? A: If you miss a dose, take it as soon as you remember. However, if it's close to the time for your next dose, skip the missed dose and continue with your regular schedule.
Q: Can I stop taking Euthyrox 12.5 Tablet if I start feeling better? A: No, do not stop taking Euthyrox 12.5 Tablet without consulting your healthcare provider. Stopping the medication abruptly can lead to a condition called thyroid storm, which can be life-threatening.
Q: Can I take Euthyrox 12.5 Tablet with other medications? A: Before taking Euthyrox 12.5 Tablet with other medications, consult your healthcare provider. Some medications can interact with thyroxine, affecting its effectiveness or causing adverse reactions.
Talk to a verified specialist who can guide you on dosage, alternatives, and interactions.
pregnancy
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alcohol
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driving
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