Levothyroxine is a thyroid hormone medication that is used to replace deficiencies in thyroid hormone available in your body. It is used to treat the following indications:

• Hypothyroidism; a medical condition that causes your thyroid gland to produce a lower than normal amount of thyroid hormone. Thyroid hormone function is to regulate your metabolism. Symptoms of hypothyroidism include: cold intolerance, muscle pain, hair loss, deep voice, tiredness, weight gain, dry and flaky skin and a slow hear rate. 

• Tumors that are responsive to TSH (type of thyroid gland tumor).  

• If you are allergic to Levothyroxine or any of the ingredients in this medicine. Tell your doctor about the allergy and what signs you had.

• If you have uncorrected adrenal insufficiency (underactivity of adrenal glands present on your kidneys).