s possible you had a reaction to one of the
ingredients in the product. What were the actual
ingredients of the product you took?
Do you know if you have Hashimoto's Thyroiditis? If you have Hashimoto's, which is an autoimmune condition, additional iodine can make the autoimmune response worse.
Do you take a replacement thyroid hormone medication, such as Synthroid, Levoxyl, Levothroxine, a desiccated mediation, etc?