Liothyronine sodium(Tiromel, Cytomel) is a synthetically manufactured prescription thyroid hormone. It specially consists of the Lisomer of the natural thyroid hormone triiodothyronine (T3).Thyroid hormones stimulate basal metabolic rate, and are involved with many cellular functions including protein, fat, and carbohydrate metabolism. Bodybuilders and athletes are attracted to Iiothyronine sodium for its ability to increase metabolism and support the breakdown of body fat. Most often utilized during contest preparation or periods of lIcutting': the drug is usually said to significantly aid in the loss of fat, often on higher levels of caloric intake than would normally be permissive of such fat loss. To this end, the drug is also commonly used in conjunction with other fat loss agents such as human growth hormone or beta agonists.
The usual protocol among bodybuilders and athletes taking liothyronine sodium to accelerate fat loss involves initiating its use with a dosage of 25 mcg per day. This dosage may be increased by 25 mcg every 4 to 7 days, usually reaching a maximum of no more than 75 mcg per day. As in a medical setting, the intent of this slow buildup is to help the body become adjust to the increasing thyroid hormone levels, and avoid sudden changes that may initiate side effects.