Liothyronine: Side Effects, Uses & Monitoring
Thyroid hormone drugs are indicated: 1.
- Data source
- FDA labeling via NIH DailyMed (label f882d34f…)
- Label version
- current
- Last reviewed
- 2026
Reported adverse reactions
Reactions listed in current FDA labeling, with the highest frequency reported across summarized placebo-controlled trials.
No structured frequency data available in current labeling. Consult the official label.
Labeled uses (from FDA prescribing information)
Thyroid hormone drugs are indicated: 1. As replacement or supplemental therapy in patients with hypothyroidism of any etiology, except transient hypothyroidism during the recovery phase of subacute thyroiditis. This category includes cretinism, myxedema and ordinary hypothyroidism in patients of any age (pediatric patients, adults, the elderly), or state (including pregnancy); primary hypothyroidism resulting from functional deficiency, primary atrophy, partial or total absence of thyroid gland, or the effects of surgery, radiation, or drugs, with or without the presence of goiter; and secondary (pituitary) or tertiary (hypothalamic) hypothyroidism (see WARNINGS ). 2. As pituitary thyroid-stimulating hormone (TSH) suppressants, in the treatment or prevention of various types of euthyroid goiters, including thyroid nodules, subacute or chronic lymphocytic thyroiditis (Hashimoto’s) and multinodular goiter. 3. As diagnostic agents in suppression tests to differentiate suspected mild hyperthyroidism or thyroid gland autonomy. Liothyronine sodium tablets can be used in patients allergic to desiccated thyroid or thyroid extract derived from pork or beef.
Conditions associated with Liothyronine in labeling
Hashimoto Thyroiditis
An autoimmune disease that attacks the thyroid gland and is the most common cause of hypothyroidism....
Hyperthyroidism
A condition in which the thyroid gland produces too much thyroid hormone, speeding up metabolism and causing w...
Hypothyroidism
A condition in which the thyroid gland does not produce enough thyroid hormone, slowing metabolism and affecti...
Thyroid Nodules
Lumps that form in the thyroid gland. Most are benign, but some require evaluation to rule out cancer....
Frequently Asked Questions
What is Liothyronine used for?
FDA labeling lists the approved uses shown above under "Labeled uses." This summary is informational; only a qualified prescriber can determine whether a medication is appropriate for you.
What are the most commonly reported side effects of Liothyronine?
Current labeling for this ingredient does not include a structured frequency table that we can reproduce. Review the official label linked below.
Does Liothyronine require lab monitoring?
Monitoring needs vary. Ask your healthcare provider whether any lab tests apply while taking Liothyronine.
Where does this information come from?
All clinical facts on this page were extracted from the current FDA-registered product labeling for this ingredient, published by manufacturers through NIH DailyMed. See the source link below.
Medical disclaimer: Educational content extracted from public FDA labeling. Not medical advice. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.