Liothyronine 25mcg
Generic For: Cytomel
Liothyronine (brand name Cytomel) is a synthetic form of T3, the active thyroid hormone, used to treat hypothyroidism and certain types of goiter. After a licensed provider reviews your prescription, your liothyronine 25mcg tablets ship directly from a licensed U.S. pharmacy.
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90-day supply · $0.61/tablet
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Price: $55.00
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Buy Liothyronine 25mcg (Cytomel) Online
A thyroid hormone (T3) replacement for hypothyroidism, goiter, and myxedema
Liothyronine 25mcg Quick Facts
| Drug class | Thyroid hormone (T3) |
|---|---|
| Treats | Hypothyroidism, goiter, myxedema, thyroid suppression testing |
| Form | Tablet |
| Typical dosing | Take 1 tablet by mouth daily. |
| Prescription required | Yes — prescription only |
What Is Liothyronine 25mcg?
Liothyronine is a man-made version of triiodothyronine (T3), one of the hormones your thyroid gland naturally produces. When the thyroid does not make enough hormone, liothyronine replaces it to help regulate metabolism, energy, and body temperature. It is the active ingredient in the brand-name medication Cytomel and is taken as a once-daily tablet. Unlike levothyroxine (T4), liothyronine works more quickly because it is already in the active hormone form.
What Does Liothyronine 25mcg Treat?
Hypothyroidism (underactive thyroid)
Myxedema (severe hypothyroidism)
Simple (non-toxic) goiter
Hypothyroidism secondary to pituitary disease (secondary hypothyroidism)
T3 suppression testing for suspected mild hyperthyroidism
Hypothyroidism following thyroid surgery or radioiodine therapy
Liothyronine 25mcg Dosage
Hypothyroidism: Start 25 mcg by mouth once daily; may increase by 25 mcg every 1–2 weeks. Usual maintenance: 25–75 mcg once daily.
Simple goiter: Start 5 mcg once daily; titrate as directed. Usual maintenance: 75 mcg once daily.
Myxedema: Start 5 mcg once daily; titrate slowly per prescriber.
Your prescriber will determine the dose and duration that are right for you. Always follow the directions on your prescription label.
Liothyronine 25mcg Side Effects
Common side effects
- Headache
- Irritability or nervousness
- Trouble sleeping
- Sweating
- Increased appetite
- Weight changes
- Diarrhea
- Menstrual cycle changes
Serious side effects
Stop taking this medication and seek medical attention right away if you experience:
- Chest pain or pressure
- Fast, pounding, or irregular heartbeat
- Shortness of breath
- Signs of allergic reaction (rash, swelling, difficulty breathing)
- Extreme nervousness, tremor, or confusion
- Worsening symptoms in patients with heart disease
Warnings & Interactions
Boxed warning: not for weight loss; large doses may cause serious or life-threatening effects
Do not use with untreated adrenal insufficiency or uncorrected adrenal cortical insufficiency
Do not use with untreated thyrotoxicosis
Use caution in patients with heart disease, angina, or high blood pressure
May alter blood sugar control; diabetic patients may need dose adjustments
Can increase the effect of blood thinners such as warfarin
Tell your prescriber about all medications, including estrogen products and antacids
Tell your prescriber about all medications, supplements, and health conditions before starting liothyronine 25mcg.
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