Iodine Formula contains the same four ingredients as the Seaweed Capsules Original Formula in a different ratio for more iodine, plus Rockweed Ascophyllum nodosum), another iodine-rich seaweed. With nearly 300 mcg of iodine from five North Atlantic seaweeds, our new IODINE FORMULA offers you a convenient way to include the health benefits of seaweed in your diet every day, while also providing the added benefit of extra iodine – 200% of the Daily Value in just 2 capsules. Just like Maine Coast's Original Formula, it’s 100% vegetarian, certified organic and raw!