Natural food source of essential iodine. from mineral-rich waters comes the nutritional vegetable of the sea. kelp provides iodine, which is one of the few minerals designated as essential. if you are on a low salt diet, you may not be getting enough of this important mineral. just one tablet per day provides 150 mcg. of iodine. this is equivalent to 100% of the daily value for adults and children over the age of 12.dose: 1 tablet daily, preferably with a meal.