This product contains high therapeutic dose, 10 mg, of potassium iodine. Low tissue iodine levels in the thyroid can cause goiters, hypothyroidism, and potentially Hashimotos Thyroiditis. Iodine is also very important for proper breast tissue function and immune function. Low iodine is associate with Fibrocystic Breasts and Breast cancer! If you think that you may be iodine deficient, I suggest you contact me via email concerning taking an Iodine Challenge Urine Test to determine whether or not your tissues are depleted of this important mineral.