Thyroxyl (T3) 100 tabs (25 mcg/tab)
Thyroxyl (Liothyronine sodium) is a synthetically manufactured prescription thyroid hormone. It specially consists of the L-isomer 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. Liothyronine sodium is used medically to treat hypothyroidism, acondition where the thyroid gland does not produce sufficient levels of thyroid hormone. Hypothyroidism is usually diagnosed with a serum hormone profile (T3, T4, & TSH), and may manifest it self with symptoms including loss of energy, lethargy, weight gain, hair loss, and changes in skin texture. T3 is the most active thyroid hormone in the body, and consequently liothyronine sodium is considered to be a more potent thyroid medication than levothyroxine sodium (T4). Bodybuilders and athletes are attracted to liothyronine sodium for its ability to increase metabolism and support the breakdown of body fat. Most often utilized during contest preparation or periods of“cutting”, the drug is usually said to significantly aid in the loss of fat, often on higher levels ofcaloric 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. Some users also ascribe an ability of thyroid hormones like liothyronine sodium to increase the anabolic effect of steroids. While in theory these drugs may support the greater utilization of protein and carbohydrates for muscle growth, they are not widely proven or accepted for this purpose. Liothyronine sodium is a synthetic form of T3 thyroid hormone. It has the chemical designation l-tyrosine,o-(4- hydroxy-3-iodophenyl)-3,5-diiodo-,mono sodium salt.
When used to treat mild hypothyroidism, the typical recommended starting dosage is 25 mcg daily. The daily dosage then may be increased by no more than 25 mcg every 1 to 2 weeks. The established maintenance dose is usually 25-75 mcg per day. Once a day administration of the full daily dose is usually recommended. Although liothyronine sodium is fast acting, its effects may persist in the body for several days after discontinuance.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 mcgevery 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. Cycles of liothyronine sodium usually last no longer than 6 weeks, and administration of the drug should not be halted abruptly. Instead, it is discontinued in the same slow manner in which it was initiated. This usually entails reducing the dosage by 25 mcg every 4 to 7 days. This tapering is done so that the body has time to readjust its endogenous hormone production at the conclusion of therapy, and to avoid the onset of side effects.