Clenbuterol has a rapid and powerful bronchial-dilating action. Clenbuterol stimulates bronchial-mucosa cells, enhancing also expectoration.
Clenbuterol additionally possesses a pronounced action on the metabolism in the organism, comparable to that of anabolic drugs. Its effect is expressed in a reduction of protein degradation in muscle cells, leading to an increase in muscle bulk and muscle strength.Clenbuterol (often referred to simply as 'Clen') is not a steroid, but a Beta 2 Sympathomitetic and central nervous system (CNS) stimulant. It is a specific agonist, stimulating the adrenergic beta 2 receptors. It is used in certain countries in a medical sense as a bronchodilator in the treatment of asthma, though not in the UK and USA, mainly due to its long half life.