Lugol's 2% Solution , is a solution of potassium iodine with iodine mixed in water. It is a medication and disinfectant used for a number of purposes. Taken by mouth it is used to treat thyrotoxicosis until surgery can be carried out, protect the thyroid gland from radioactive iodine, and to treat iodine deficiency.
To use as a water purifier: Add 3-6 drops per liter of water.
Will ship after March 15, 2022.
Here is an excellent article by Dr. Alton:
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At a time when the threat of nuclear war is the highest since the Cuban Missile Crisis Potassium Iodide pills are sold out everywhere. This option is a potential life saver. Highly recommended.