How long does it take for thyrotropin 0.1μIU/ml to become normal in hyperthyroidism patients needs to be analyzed in relation to the condition of the patient and the dosage of the medication, and it may take about one month or even longer. Thyrotropin is an important hormone secreted by the pituitary gland to stimulate the development of thyroid cells, synthesis and secretion of thyroid hormones, and its normal range is generally 0.35~5.5 μIU/ml, so 0.1 μIU/ml is on the low side; patients with hyperthyroidism need to comply with the doctor’s instructions to take methimazole, propylthiouracil and other antithyroid medications, to keep the thyroid hormones within a reasonable range. Patients diagnosed with hyperthyroidism should actively cooperate with the doctor’s treatment, take medication on time and undergo regular checkups, which will help normalize the thyroid hormones.