* Established 1971 * Certified Gluten-Free * An Excellent Natural Source of Iodine * Supports Thyroid Health * Dietary Supplement * Kosher Parve — Our Pledge of Integrity — * Authenticity * Cleanliness * Freshness * Consistency * Accuracy Kelp is a type of seaweed found in the ocean. Known as a green superfood, kelp is an excellent natural source of iodine. Iodine is known for helping to support healthy thyroid function.