This information is for general knowledge and should not be taken as medical advice. Consult with a healthcare professional or public health authority regarding emergency preparedness and the use of potassium iodide (KI).

While KI is legal for OTC sale, it is not always stocked on front-facing shelves at all pharmacies.

Potassium iodide (KI) is widely available as a non-prescription, over-the-counter (OTC) substance. It is primarily produced in tablet form for emergency radiation protection, though liquid and powder versions also exist.

: Large chains (like Walgreens, CVS, or Shoppers Drug Mart) or independent local drugstores may carry it. If it is not in stock, many pharmacies can order it for you upon request.