Levothyroxine Sodium FAQ
What is levothyroxine primarily used for?
To treat hypothyroidism and manage thyroid cancer or nodular goiter.
How does levothyroxine work in the body?
It replaces deficient thyroid hormones, regulating metabolism and energy levels.
What are common side effects of levothyroxine?
Weight loss, palpitations, nervousness, and increased appetite if overdosed.
Can levothyroxine interact with other medications?
Yes, especially with antacids, iron supplements, and cholesterol-lowering drugs.
How often should levothyroxine be taken?
Once daily, preferably on an empty stomach, 30-60 minutes before breakfast.
What happens if a dose is missed?
Take it as soon as remembered, but skip if near the next dose time.
Is levothyroxine safe during pregnancy?
Generally, but dosage may need adjustment due to hormonal changes.
Can diet affect levothyroxine absorption?
Yes, high-fiber foods and soy products may reduce absorption.
How long does it take for levothyroxine to work?
Noticeable improvements in symptoms may take several weeks.
What tests monitor levothyroxine therapy?
Regular TSH and thyroid hormone level blood tests.
Can levothyroxine cause weight loss?
Only if the body's hormone levels are normalized from a deficit.
Is levothyroxine a lifelong medication?
For most hypothyroidism cases, yes, unless the thyroid recovers function.
How should levothyroxine be stored?
In a cool, dry place, away from light and moisture.
Can children take levothyroxine?
Yes, but dosage is based on weight and medical condition.
Does levothyroxine have any dietary restrictions?
Avoid consuming large amounts of soy or fiber with the medication.
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