Q. A 45-year-old female presents to the medical outpatient department with symptoms of hyperthyroidism, including palpitations, heat intolerance, weight loss, and anxiety. On physical examination, she has a diffuse goiter, her blood pressure is 120/80 mmHg, and her pulse is 95 beats per minute. Laboratory investigations have revealed a normal complete blood count and normal renal and liver function test levels. However, there are elevated TSH and free T4 levels. In addition, imaging studies reveal a pituitary adenoma measuring 2 cm in size. Which of the following is the best initial treatment for this patient?