Take Home Points
•Iodine-based imaging contrast can sometimes cause iodine-induced thyrotoxicosis and can interfere with iodide uptake in the thyroid, compromising radio-iodine therapy
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•When considering thionamide therapy, methimazole is a good first option—longer duration of action, more rapid efficacy, and better tolerated (lower incidence of SE)
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•Consider labetalol if beta blocker therapy is needed in patients who abuse cocaine
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•Pregnancy is an absolute contraindication to radio-iodine therapy
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•Propylthiouracil may be a better treatment choice in pregnant patients