Levothyroxine (T4)
T4 (THYRAX) - fat burner, or L-Thyroxine is a synthetically manufactured thyroid hormone. Its effect is similar to that of natural L-thyroxin (L-T4) in the thyroid gland. L-thyroxin is one of two hormones which is produced in the thyroid. The other one is L-triiodthyronine (L-T3). It is often used for a longer time period than L-T3. Bodybuilders use L-Thyroxine to accelerate the metabolizing of carbohydrates, proteins, and fat. The body burns more calories than usual so that a lower fat content can be achieved or the athlete burns fat although he takes in more calories. L-Thyroxine (T4) was often used by competing bodybuilders. The athlete no doubt becomes harder. When used properly there are few side effects to L-Thyroxine.
The dosages taken by athletes are usually in the range of 200-400 mcg/day. Beginning with a small dose and increase it slowly and evenly over several days. L-Thyroxine is a prescription drug and available only in pharmacies. L-Thyroxine is rarely found on the black market. It's recommended to take T4 together with ephedrine tablets.
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