Used as an expectorant to help loosen and thin mucus in respiratory conditions such as asthma, bronchitis, and emphysema, making it easier to cough up. Commonly included in cough syrups and throat lozenges for this purpose. Also employed in medical imaging to protect the thyroid gland from radioactive iodine exposure during radiological procedures. Used in emergency situations, such as nuclear accidents, to block the uptake of harmful radioactive iodine by the thyroid. Frequently applied in laboratory settings as a source of iodide ions in chemical reactions and analytical tests. Used in disinfectants and antiseptics due to its ability to release iodine. Also utilized in photography and in the preparation of iodine solutions for staining in microscopy.