The effect of diltiazem on the manifestations of hyperthyroidism and thyroid function tests

How do I Diagnose and Manage Acute Endocrine Emergencies in the ICU?

“…In two small clinical trials, diltiazem improved the signs and symptoms of hyperthyroidism and was as effective as propranolol. 66,67 Although its use in thyroid storm has not been rigorously investigated, diltiazem may be an option when b-blockade is contraindicated.…”