IOSAT Potassium Iodide should be taken each day you are exposed to radioactive iodine released from a nuclear plant or nuclear bomb. Chances are, you would not use up all 14 pills in a single radiation emergency. The winds that brought the radioactive iodine plume into your area would have likely blown it away by then and you would have hopefully evacuated the affected area if directed to do so by health officials. If you are exposed for two days you take just two pills (one pill a day) and then stop, saving the remaining foil-sealed pills for future needs. If you were inhaling or ingesting radioactive iodine for a day or two or fourteen, wouldn't you want to take an FDA-Approved, individually foil-sealed, FRESH pill every day? One pack of IOSAT (14 130mg pills) is the FDA recommendation for one person. Taking more may lead to an increased risk of hypothyroidism.