This medication is a thyroid hormone, prescribed for hypothyroidism, and thyroid cancer.  

Contraindicated in patients with untreated hyperthyroidism, recent heart attack and hypersensitivity.

Adults: Initial dose of 50-100mcg increased by 25-50 mcg at 3-4 weeks interval. Max: 150-300mcg daily.
Children: 25-150-mcg daily with 25mcg increments every 2-4 weeks.

It comes as a tablet to take by mouth, on an empty stomach.

• Caution should be exercised in patients with history of difficulty in swallowing, heart disease, high blood pressure, bleeding disorder, anemia, sugar, osteoporosis, fertility problems, other thyroid problems, any allergy, who are taking other medications, during pregnancy and breastfeeding.

• Monitor blood sugar regularly while taking this medication.

Nervousness, excitability, tremor, muscle weakness, cramps, increased sweating, flushing, heat intolerance, headache, insomnia, rapid heart rate, palpitations, chest pain, excessive weight loss, menstrual irregularities, diarrhea and vomiting.

Avoid excess dosage.

Store it at room temperature.