thyroxine tablets uses +7 Thyrox-50 Tablet - Uses, Dosage, Side Effects, Price ...Thyroxine (levothyroxine) tablets are used as hormone replacement therapy to treat hypothyroidism (underactive thyroid), where the body cannot produce enough thyroid hormone. They restore energy levels and normalize metabolism, treating symptoms like fatigue, weight gain, and depression. It is also used to treat/manage goiters (enlarged thyroid) and thyroid cancer.