Thyroid Support Gold is a natural supplement designed to give gentle support to a dog's thyroid gland. The principal herbs in this formula specifically address thyroid hormones. The adjunct herbs support other parts of the body that can be affected by thyroid hormones: heart function and the nervous system (including activity levels and sleep). There is also some naturally occurring Vitamin C that provides support for the thyroid and immune system. Our holistic veterinarian created the ideal balance of complementary botanical ingredients to maintain long-term, normal function of the thyroid gland. Specifically, Thyroid Support Gold works to sustain the normal equilibrium of metabolism. When the metabolism is affected by the thyroid hormones, it will influence the appetite, thirst and body weight. Skin and coat are affected as well. Normal thyroid hormone levels and a healthy metabolic rate can significantly contribute to the comfort and wellness of your dog for a better quality of life. The action of thyroid hormones indirectly affect the heart rate, force of the heartbeat and affect the level of nervousness in the body. For this reason, Thyroid Support Gold has been formulated to support the entire body as it relates to thyroid function. Herbs for healthy function of the heart muscle, heart rate and a normally calm temperament of a balanced nervous system are part of what makes Thyroid Support Gold a comprehensive and effective formula. The action of Thyroid Support Gold is effective yet works gently. Supporting the body?s hormone levels requires a long-term outlook. Please expect that natural supplements for supporting normal thyroid function are going to work gradually over several weeks before you can expect evidence of the results.