Lugol’s iodine is a small, multi purpose item with a long shelf life. Uses Emergency water disinfection Topical antiseptic for minor cuts If you’re iodine deficient, correcting that can help fatigue, cold tolerance, hair thinning, and a slow metabolism, but Lugol’s is concentrated so don’t guess on dosing. Amber glass helps protect it from light. Stored sealed, cool, and dark it can stay viable 10 years or longer. Radiation note: KI tablets are the standard for radioactive iodine because dosing