"In fact, I won’t put potassium Iodide in any supplement I design. One cause of Hashimoto’s Thyroiditis is excessive potassium Iodine from sea vegetables like kelp, which is how the problem was first discovered. This means that potassium Iodine has been shown to clog the thyroid gland and shut it down on too much intake. I have never seen such a problem from Iosol in two decades of use."