KIC RadBlock (RB200) offer the best value for protection of the thyroid during a nuclear emergency. Recommended purpose or use: Thyroid blocking agent for use in nuclear emergency involving the release of radioiodine. This medication is to be used in addition to measures to avoid exposure to radiation such as evacuation, shelter and agricultural and food measure to limit the sale and ingestion of radioiodine contaminated food. Each tablet contains: Potassium (Potassium iodide) 15.3 mg Iodine (Potassium iodide) 497 mg Threshold Thyroid Radioactive Exposures and Recommended Doses of KI for Different Risk Groups Predicted Thyroid exposure(cGy) KI dose (mg) #