The natural kelp ingredient A.N ProDen® helps control and improve plaque, tartar and bad breath when used as directed. A dose contains 330mg. Dogs having problems with the thyroid gland must be careful with their intake of iodine. Since kelp, including our unique ingredient, have a naturally high iodine content, we do not recommend that dogs with thyroid problems use this product. Store in a cool, dry place. ProDen PlaqueOff® Powder is a 100% natural pet food supplement containing the natural and organic kelp ingredient A.N ProDen® – shown in clinical