This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pharmacology
[{'content': 'Orally active hormone is \nSelect and explain. \nA. TSH, B. Thyroxine, C. GH, D. Prolactin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Levothyroxine is an orally active hormone- T4 given daily on empty stomach in doses of 12.5, 25, 50,75 or 100 mcg depending on the clinical condition of hypothyroidism REF KD Tripathi 8th ed', 'role': 'assistant'}]