Liothyronine 50mcg
Generic For: Cytomel
Liothyronine 50mcg (brand name Cytomel) is a synthetic form of triiodothyronine (T3), the active thyroid hormone. It is prescribed to treat hypothyroidism, myxedema, and certain types of goiter by replacing hormone the thyroid gland does not produce in sufficient amounts. After review of your prescription by a licensed provider, your order ships from a licensed U.S. pharmacy.
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Buy Liothyronine 50mcg (Cytomel) Online
Liothyronine is a synthetic thyroid hormone (T3) used to treat hypothyroidism, myxedema, and nontoxic goiter.
Liothyronine 50mcg Quick Facts
| Drug class | Thyroid hormone (T3) |
|---|---|
| Treats | Hypothyroidism, myxedema, nontoxic goiter |
| Form | Tablet |
| Typical dosing | Take 1 tablet by mouth daily. |
| Prescription required | Yes — prescription only |
What Is Liothyronine 50mcg?
Liothyronine is a man-made version of triiodothyronine (T3), one of the hormones naturally produced by the thyroid gland. When the thyroid is underactive, the body cannot regulate metabolism, energy, and temperature properly. Liothyronine replaces missing thyroid hormone to restore normal levels and relieve symptoms such as fatigue, weight gain, and cold intolerance. It is available by prescription only, and the brand-name version is Cytomel.
What Does Liothyronine 50mcg Treat?
Hypothyroidism (underactive thyroid)
Myxedema (severe hypothyroidism)
Nontoxic goiter (enlarged thyroid) for TSH suppression
Secondary hypothyroidism (pituitary origin)
Tertiary hypothyroidism (hypothalamic origin)
As a diagnostic agent in thyroid suppression tests
Liothyronine 50mcg Dosage
Hypothyroidism: Start 25 mcg by mouth once daily; increase by up to 25 mcg every 1–2 weeks. Usual maintenance: 25–75 mcg once daily.
Myxedema: Start 5 mcg once daily; increase by 5–10 mcg every 1–2 weeks; usual maintenance 50–100 mcg daily.
Nontoxic goiter: Start 5 mcg once daily; usual maintenance 75 mcg daily.
Your prescriber will determine the dose and duration that are right for you. Always follow the directions on your prescription label.
Liothyronine 50mcg Side Effects
Common side effects
- Headache
- Irritability or nervousness
- Trouble sleeping
- Increased sweating
- Increased appetite
- Weight loss
- Diarrhea
- Menstrual changes
Serious side effects
Stop taking this medication and seek medical attention right away if you experience:
- Chest pain or irregular heartbeat
- Rapid or pounding heartbeat (palpitations)
- Shortness of breath
- Signs of allergic reaction (rash, swelling, difficulty breathing)
- Severe headache or tremor
- Symptoms of too much thyroid hormone (heat intolerance, anxiety, excessive weight loss)
Warnings & Interactions
Not for weight loss; large doses may cause serious or life-threatening toxicity
Do not use with uncorrected adrenal insufficiency
Do not use in untreated thyrotoxicosis
Use with caution in heart disease; may worsen angina or arrhythmias
May alter blood sugar control in diabetes; monitor glucose
Can increase the effect of blood thinners such as warfarin
Monitor thyroid function tests regularly during treatment
Tell your prescriber about all medications, supplements, and health conditions before starting liothyronine 50mcg.
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