Triiodothyronine, also known as T3, is a thyroid hormone. It affects almost every physiological process in the body, including growth and development, metabolism, body temperature, and heart rate.
Production of T3 and its prohormone thyroxine (T4) is activated by thyroid-stimulating hormone (TSH), which is released from the anterior pituitary gland. This pathway is part of a closed-loop feedback process: Elevated concentrations of T3 and T4 in the blood plasma inhibit the production of TSH in the anterior pituitary gland. As concentrations of these hormones decrease, the anterior pituitary gland increases the production of TSH, and by these processes, a feedback control system stabilizes the level of thyroid hormones in the bloodstream.
T3 is the true hormone. Its effects on target tissues are roughly four times more potent than those of T4. Of the thyroid hormone that is produced, just about 20% is T3, whereas 80% is produced as T4. Roughly 85% of the circulating T3 is later formed in the liver and anterior pituitary by the removal of the iodine atom from the carbon atom number five of the outer ring of T4. In any case, the concentration of T3 in the human blood plasma is about one-fortieth that of T4.
T3 works at the cellular level by increasing the metabolism of protein, carbohydrates, and fats, as well as increasing heart rate and blood flow. T3 is an excellent fat burner since your metabolism is greatly increased while using it. This benefits bodybuilders in that they can afford to be on a higher calorie pre-contest diet since they’ll burn excess calories with a higher metabolic rate. But remember, T3 is catabolic (you can potentially lose significant muscle mass) and long-term use can decrease bone density as well. Bodybuilders and athletes who wish to use T3 for its weight loss and fat loss effects normally begin with a T3 dosage of 25 – 50mcg per day, and tolerance is assessed. Tolerance relates to the experience of metabolism and fat burning effects, as well as the temperature increase associated with it. Every individual will respond in a different manner and at a different intensity to anyone given Cytomel dosage, so it must be understood that a T3 dose of 50mcg for one individual might elicit steady fat loss, but that same 50mcg dose might not do very much for another.
100mcg/ml at 30ml per bottle.
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