THYACTIN contains iodine in its purest, most elemental dietary form, which requires no further digestive breakdown, essentially increasing overall absorption and assimilation. Thyactin is formulated to be 99% absorbable. ThyactiN is designed for thyroid support and is further enhanced by the addition of key homeopathic medicines that address thyroid function, fatigue, obesity, poor digestion, and cold hands and feet (common symptoms of nutritional iodine deficiency).