Thyrolar 50 mg (commonly referred to as Thyrolar 1/4) is a thyroid hormone replacement medication containing a combination of Levothyroxine Sodium (T4 – 50 mcg) and Liothyronine Sodium (T3 – 12.5 mcg). It is used to treat hypothyroidism, a condition where the thyroid gland does not produce enough hormones. Thyrolar helps restore normal thyroid levels, improving energy, metabolism, mood, and overall body function.