T3 -Isis is an incredible fat burning product produced by UG lab leader Isis pharmaceuticals. A very potent thyroid hormone that is to be treated with respect and at your own risk perhaps better used in a cycle as an ancillary especially if you are concerned about muscle loss as T3 has a catabolic effect meaning you will not just loose fat but muscle also.
T3 increases the basal metabolic rate and, thus, increases the body’s oxygen and energy consumption. The basal metabolic rate is the minimal caloric requirement needed to sustain life in a resting individual. T3 acts on the majority of tissues within the body, with a few exceptions including the spleen and testis. Overall T3 is possibly the most powerful fat burning tool in a bodybuilders arsenal but misuse can lead to permanent damage of the thyroid.