A patient is experiencing nervousness, tachycardia, weight loss, and an increase in heart rate. The patient has a TSH level of 0.1MIU/ml. The normal TSH level is 0.2−4.8MIU/mI. The patient has been taking PTU 100mg po tid for one month. You are the health care provider on duty and have to assist in some clinical decisions. The patient's dose of medication needs to be for an effective dose.
a. Increased
b. Decreased
c. Left the same