From the Manufacturer's Label:
Source of essential iodine. Kelp provides iodine, which is one of the few minerals designated as essential. Liquid formula. Serving is 4 drops - 0.25ml.
About Puritan’s Pride
For more than 40 years, Puritan's Pride has helped families achieve a lifestyle of wellness. Our vitamins and supplements are made with care from the highest quality ingredients. They are tested or inspected as many as 15 times throughout the manufacturing process. That's why you can shop with confidence. We take pride in our products and helping customers feel their best.
Contains No sugar, starch, yeast, corn, wheat, milk, artificial color or flavor.