Liothyronine 5mcg
Generic For: Cytomel
Liothyronine (brand name Cytomel) is a synthetic form of the thyroid hormone T3, prescribed to treat hypothyroidism, nontoxic goiter, and related thyroid conditions. It works by replacing hormone your thyroid gland does not produce in sufficient amounts. Your order ships from a licensed U.S. pharmacy after review of your prescription by a healthcare provider.
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90-day supply · $0.50/tablet
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Buy Liothyronine 5mcg (Cytomel) Online
A thyroid hormone (T3) replacement for hypothyroidism, nontoxic goiter, and myxedema
Liothyronine 5mcg Quick Facts
| Drug class | Thyroid hormone (T3) |
|---|---|
| Treats | Hypothyroidism, nontoxic goiter, myxedema |
| Form | Tablet |
| Typical dosing | Take 1 tablet by mouth daily. |
| Prescription required | Yes — prescription only |
What Is Liothyronine 5mcg?
Liothyronine 5mcg is a prescription tablet containing a man-made version of triiodothyronine (T3), one of the hormones your thyroid gland naturally produces. It is used when the thyroid does not make enough hormone, a condition called hypothyroidism. Liothyronine helps restore normal energy metabolism and relieve symptoms such as fatigue, weight gain, and cold intolerance. It is sold under the brand name Cytomel and is taken by mouth, usually once daily, with dosing adjusted based on lab tests.
What Does Liothyronine 5mcg Treat?
Hypothyroidism (underactive thyroid)
Nontoxic goiter (enlarged thyroid gland)
Myxedema (severe hypothyroidism)
Hypothyroidism secondary to Hashimoto's thyroiditis
TSH suppression as part of thyroid cancer management
Diagnostic agent in T3 suppression testing
Liothyronine 5mcg Dosage
Mild hypothyroidism: 25 mcg by mouth once daily; may increase by up to 25 mcg every 1–2 weeks; usual maintenance 25–75 mcg once daily.
Nontoxic goiter: start 5 mcg by mouth once daily; increase by 5–10 mcg every 1–2 weeks; usual maintenance 75 mcg once daily.
Older adults or cardiovascular disease: start 5 mcg by mouth once daily; increase by 5 mcg increments as directed.
Your prescriber will determine the dose and duration that are right for you. Always follow the directions on your prescription label.
Liothyronine 5mcg Side Effects
Common side effects
- Headache
- Irritability or nervousness
- Trouble sleeping
- Sweating
- Increased appetite
- Tremor
- Weight loss
- Menstrual changes
Serious side effects
Stop taking this medication and seek medical attention right away if you experience:
- Chest pain or pressure
- Rapid or irregular heartbeat
- Shortness of breath
- Allergic reaction (rash, swelling, difficulty breathing)
- Signs of too much thyroid hormone (severe anxiety, heat intolerance, diarrhea)
- Seizures
Warnings & Interactions
Not for weight loss; large doses can 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 with heart disease; may worsen angina or arrhythmias
May alter blood sugar control; diabetic patients may need dose adjustments
May increase the effect of blood thinners such as warfarin
Regular thyroid lab monitoring (TSH, T3) is required to adjust dosing
Tell your prescriber about all medications, supplements, and health conditions before starting liothyronine 5mcg.
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