Thyroid Defense - These natural herbs may help defend against hypothyroidism (underactive thyroid). The thyroid helps regulate your pet's metabolism to convert food into energy and is crucial to overall health. Cardamom seed contains some bioactive compounds with potential health benefits, such as antioxidants and anti-inflammatory properties. Mustard seeds contain nutrients and compounds that may benefit overall health, including selenium and omega-3 fatty acids. Kelp is rich in iodine, which is necessary for producing thyroid hormones. May help support a healthy thyroid. Veterinary Health Product: NN.B1B7