Clenbuterol is an anabolic steroid which is a bronchodilator and is thus prescribed for asthma patients and others suffering from breathing disorders. This steroid dilates the alveoli of the lungs thereby enabling a larger surface for oxygen intake. This has provided almost instant relieve to many people with bronchial disorders

The beta-2 agonist in Clenbuterol makes this drug thermogenic. This directly stimulates the fat cells. Being thermogenic,  the triglycerides are broken down by it and free fatty acids are formed. Many sports people but his steroid because this is one of the favorite pre contest drug as it imparts strength to the body and also increases the muscle mass while promoting the body fat loss. It is recommended that this drug be taken for short periods like 3 to 4 weeks.

Known side-effects of this drug are sweating and an increase in the blood pressure. Some users have also reported tremor and nausea. But these side effects do decrease and completely subside in five to seven days. It has been claimed by many athletes that this steroid does indeed promote dramatic strength and also helps in reducing body fat. This anabolic steroid is also famous for increasing muscle mass. Many professional athletes and body-builders use this steroid one month prior to a contest as this is not a banned drug by athletic or sports committees.