You may be familiar with clenbuterol, as it is a very popular dieting drug among bodybuilders. Specifically this drug has an effect on the body similar to the endogenous hormone adrenaline (epinephrine). The properties of this drug are similar to ephedrine and norephedrine, which work
mainly to stimulate certain adrenergic receptors. Clenbuterol most specifically binds to the beta-2 receptor, which is directly related to fat loss. When this receptor is activated, the body is prompted to release fatty acids into circulation (lowering fat stores). Clenbuterol also acts as a strong CNS stimulant, and users quite commonly report associated side effects like shaky hands, insomnia, sweating, increased blood pressure and nausea during treatment. Such side effects generally subside after a week or so once the user becomes accustomed to the drug. Only consider clenbuterol when the stimulating effects of Phenyltropic PPA have subsided.


Cytomel is a syntehtic form of the endogenous thyroid hormone triiodothyronine (T-3). Thyroid hormones are the primary regulators of body metabolism, and effect virtually all organ systems. T-3 is the hormone that displays the most pronounced activity in the body, although there are a number of other hormones and precursors in this group. Thyroid drugs are advantageous to the athlete for their ability to markedly increase the metabolic rate (affecting the rate in which proteins, fats and carbohydrates are utilized by the body). In particular, the use of thyroid drugs can have a dramatic impact on an individuals body-fat stores. So much that many bodybuilders find it possible to shred off excess fat without the same level of caloric restrictions needed with "natural" diets. Dieting is in fact very difficult for most people, because the body will quickly notice a deficit in food intake, and will respond by reducing the level of thyroid hormones in the blood. This makes it increasingly more difficult for the average person to consistently lose weight during a diet, as the body is constantly striving to lower its daily need for calories. Thyroid use clearly circumvents this problem, making this type of drug use very popular among serious competitors. These drugs are not without side effects however, which include, but are not limited to, heart palpitations, agitation, shortness of breath, irregular heartbeat, sweating, nausea, headaches, and psychic/metabolic disorders. Cytomel is a powerful hormone, one that can permanently alter the functioning of the body if it is misused. When administering it, one must take caution to increase the dosage slowly. It is also a good recommendation to take no more than 100mcg daily.


Synthroid is a synthetic form of the thyroid hormone thyroxine (T-4). Thyroxine was the first thyroid hormone isolated by scientists, who at first mistakenly thought it was the primary thyroid hormone. Later we have come to find however that T-3 is the hormone which displays the most activity. Thyroxine is actually looked at as a relatively inactive thyroid product in its initial state, and exerts most of its action by converting to T-3. 80% of blood T-3 actually comes from the conversion of T-4, so thyroxine can be thought of as a form of storage for active thyroid hormone in the body. Administration of a synthetic T-4 can markedly increase basal metabolism however, its effect is limited by the rate at which the body can convert it. It is therefore considered as a weaker thyroid option, although its effect is still quite substantial. As with Cytomel, side effects can be a major concern (see above). Synthroid is also believed to have the potential to permanently alter thyroid functioning if misused, so don't be tricked into thinking it is completely weak or benign. Similar dosing regimens to Cytomel apply, with the total daily amount not to exceed 300-400mcg.


Tiratricol is a synthetic thyroid hormone popular among bodybuilders in Europe. Similar to Synthroid, this compound is relatively inactive in its initial state. Its effect on the body stems from its ability to convert to T-3, the body's primary thyroid hormone. It is interesting to note that tiratricol is commonly used in Europe to treat cases of hyperthyroidism (overproduction of thyroid hormones). Apparently in such conditions the intake of tiratricol can cause the body to recognize a surplus of thyroid hormone levels (feedback mechanism), signaling for the reduced secretion of TSH (thyroid stimulating hormone). This will ultimately aid in the regulation of hormone production, as natural T-3 and T-4 output would be reduced. Healthy bodybuilders however do not feel the use of this item lowers thyroid levels, and instead find it to be a very effective drug for elevating T-3 and increasing the removal of excess body fat. Tiratricol is comparatively weaker than the previously mentioned thyroid products, although one should still take caution when administering it. The maximum dosage should not be taken from the onset; instead it is to be built up slowly. A typical daily dosage is somewhere in the range of ten to fourteen .35mg tablets, with two to four tablets being considered the customary starting point. This is usually increased by two tablets every subsequent day (or two). Likewise the dosage should be slowly reduced as the drug is discontinued. This drug is not without side effects, however; they are much less prevalent than with other thyroid medications.

  1. Ana Sanders 15 January 2012 at 22:06  

    Natural thyroid supplements are definitely beneficial in curing thyroid diseases. Since they come from the extracts of natural products and have no unwanted effects.