Select the class of drugs used as co-therapy to inhibit the increased sympathetic responses that accompany hyperthyroidism in the treatment of thyrotoxic crisis.

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The thioamide drugs are useful in the treatment of thyrotoxic crisis, which is associated with an excessive secretion of thyroid hormone. Occasionally, untreated hyperthyroid individuals undergo emotional stress or trauma that results in an intense hyperthyroid reaction. Fever, tachycardia, heart failure, and coma may result. Treatment may include thioamide drugs, iodine, and propranolol. Beta-adrenergic blocking drugs do not affect the thyroid gland but are administered to inhibit the increased sympathetic responses that accompany hyperthyroidism.

Select the Class of Drugs Used as Co-Therapy to Inhibit