How frequently would you check thyroid function in a patient who has been on amiodarone for more than one year with no prior thyroid disease and consistently normal thyroid function tests?

Amiodarone-induced thyroid dysfunction occurs in approximately 2–24% of cases. Hypothyroidism is more common than hyperthyroidism. Hypothyroidism can occur within 3 months of the beginning of Amiodarone in 10–20% of cases or may develop up to 1 year in 5–10% of cases. In some studies, the median tim...