Tiratricol is a naturally occurring metabolite of the endogenous thyroid hormone triodothyronine (T-3). The medical use for thyroid preparations is for the treatment of thyroid dysfunction and obesity. The thyroid gland in fact produces two primary hormones, identified as T-3 and T-4 (thyroxine, which Converts to T-3 in the body). Together these structures are the main regulators of the body's metabolism. Tiratricol is a rapidly metabolised form of the T-3 hormone. When administered, this substance should markedly increase the metabolic rate. This is noted by an increase in the conversion rate of carbohydrates, proteins and fats. This basically means that the body will utilise nutrients at a much faster speed, due to increased cellular activity.