Clenbuterol is used by athletes and body builders because of its properties in improving overall lean muscle composition, and burn excess fat, although the use of Clenbuterol as a drug in sports is a legal issue in many countries. There are countries in Europe where Clenbuterol is used treating asthma and other breathing disorders, as a bronchodilator.

The effects of Clenbuterol as an ephedrine on the beta 2 receptors result in the increase of the secretion and manufacture of the group of hormones called the cathecholamines. These hormones include epinephrine or adrenaline, norepinephrine (noradrenaline), and dopamine, all secreted from the adrenal region. However, for the body builders and athletes, the fat loss burning properties of Clenbuterol are of prime concern.

Clenbuterol is a thermogenic drug, which means that the temperature of the body is slightly increased once it starts to come into effect. The rise in temperature of the body leads to a favorable condition when the fat cells are more readily processed from the adipose tissues, and the energy from the same is harnessed more quickly. Apart from this, Clenbuterol has shown to reverse the effects of insulin, which facilitates the process of the breakdown of glycogen into glucose. Clenbuterol also increases the fat burning rate in the body, or in other words speeds up the metabolism rate of the body. This feature is especially singled out, when Clenbuterol is administered exclusively as a weight loss drug.

Clenbuterol Hydrochloride or Clen as it is known for short, comes in tablets and liquid, though the liquid is meant for horses, and is very hard to dose correctly for humans. Tablets come in 20 or 40mcg doses, but as men take 80-160mcg a day in one dose, and women take 80-120mcg a day in one dose, why would anyone want the 20mcg tablets.

Clenbuterol can only safely be taken for three weeks, after that the beta 2 receptors become worn out and the Clenbuterol is doing nothing to help, after a three week cycle of Clenbuterol, one must stop for another three weeks to let the beta 2 receptors recover. If you want to take Clenbuterol for longer than three weeks, you must take ketotifen tablets, 2-3mg a day of Ketotifen, taken before bed (it makes you very drowsy), means you can use Clenbuterol for 6-8 weeks without a break.

People often stack (combine) Clenbuterol Hydrochloride tablets with T3 Cytomel, combined Clenbuterol and T3 Cytomel tablets at the same time for 3 weeks will burn an amazing amount of fat. The T3 Cytomel stimulates your thyroid, when your thyroid is stimulated your metabolism rises and you burn fat extremely quickly. T3 Cytomel is also only ever used for three weeks, and then stopped for three weeks, taking Ketotifen does not mean that you can take T3 Cytomel for longer than three weeks.