SPL Set ID: 0b0f2db9-642d-d84f-b102-b43de34bbe75

Liothyronine sodium tablets contain the active ingredient, liothyronine (L-triiodothyronine or LT 3 ), a synthetic form of a thyroid hormone liothyronine in sodium salt form. It is chemically designated as L-Tyrosine, O -(4-hydroxy-3-iodophenyl)-3,5-diiodo-, monosodium salt. The molecular formula, molecular weight and structural formula of liothyronine sodium are given below. C 15 H 11 I 3 NNaO 4 M.W.672.96 Liothyronine sodium tablets contain liothyronine sodium equivalent to liothyronine in 5 mcg, 25 mcg, and 50 mcg. Inactive ingredients consist of calcium sulfate, microcrystalline cellulose, hypromellose, talc, and colloidal silicon dioxide.