liothyronine sodium /lī′ōthī″rənēn/ , a synthetic thyroid hormone. Also called triiodothyronine. ▪ INDICATIONS: It is prescribed in the treatment of primary hypothyroidism, myxedema, simple goiter, cretinism, and secondary hypothyroidism. ▪ CONTRAINDICATIONS: Hyperthyroidism, thyrotoxicosis, acute myocardial infarction, or known hypersensitivity to this drug prohibits its use. It is used with caution in patients with diabetes mellitus or cardiovascular disease. ▪ ADVERSE EFFECTS: Among the serious adverse effects, usually caused by overdosage, are tachycardia, arrhythmias, thyrotoxicosis, nausea, vomiting, hypertension, nervousness, and loss of weight.
