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warnings
WARNINGS As with other I 131 containing agents, in order to decrease thyroid accumulation of I 131, block the thyroid gland with iodine. (See DOSAGE AND ADMINISTRATION section) During and following the injection, patients with known or suspected pheochromocytoma should be carefully monitored for hypertensive crises.
ADVERSE REACTIONS Transient episodes of marked hypertension have been reported in patients after injection of Iobenguane Sulfate I 131. Some of these patients were on anti-hypertensives and others were not. Nausea, vomiting and sleepiness have been reported after injection of higher than the recommended doses of Iobenguane Sulfate I 131. The no effect level for these reactions has not been identified. An episode of fever, chills and hypotension has been reported. In clinical trials, no deaths have been attributed to the drug.