: The drug works best when taken shortly before or immediately after exposure. Taking it days in advance provides no protection when the actual event occurs.
In a radiation emergency, some people may be told to take potassium iodide (KI) to protect their thyroid. Centers for Disease Control and Prevention | CDC (.gov) Nuclear Disasters: Should You Get Iodide Now? buy iodine tablets
Public interest in buying iodine often spikes during geopolitical tensions, but experts from institutions like the RAND Corporation and the University of Rochester caution against viewing them as a "silver bullet". : The drug works best when taken shortly