Potassium Iodide (KI) is a compound that contains Iodine, a nutrient necessary for normal thyroid function. Iodine in the form of Iodide is an integral part of thyroid hormones, which regulate cellular metabolism and energy production. Potassium Iodide - Potassium iodide (also called KI) is a salt of stable (not radioactive) iodine. Because non-radioactive KI acts to block radioactive iodine from being taken into the thyroid gland, it can help protect this gland from injury. Potassium Chloride – Potassium Chloride protects against internal radiation from radioiodine taken into the body. If the thyroid absorbs all the iodine that it needs from the nonradioactive KI, then the radioactive iodine will not be absorbed and will be eliminated from the body. Sodium Alginate is a good chelator for pulling radioactive toxins from the body. It reduces the amount of strontium-90 absorbed by bone tissue by 50 to 83 percent, and is an effective preventive and therapeutic substance against radiation and heavy metals. Small but regular doses of alginate are effective in preventing the daily absorption of small doses of radioactive strontium and other contaminants that are present in the environment.