Clenbuterol ambroxol raw materials cas:37148-27-9

Clenbuterol is a β2 agonist with some structural and rmacological similarities to epineine and salbutamol, but its effects are more potent and longer-lasting as a stimulant and thermogenic drug. It causes an increase in aerobic capacity, central nervous system stimulation, blood pressure, and oxygen transportation. It increases the rate at which body fat is metabolized while increasing the body's basal metabolic rate (BMR).[citation needed] It is commonly used for smooth muscle-relaxant properties as a bronchodilator and tocolytic.

Although often used by bodybuilders during their "cutting" cycles,[citation needed] the drug has been more recently known to the mainstream, particularly through publicized stories of use by celebrities such as Victoria Beckham,Britney Spears, and Lindsay Lohan, for its off-label use as a weight-loss drug similar to usage of other sympathomimetic amines such as edrine, despite the lack of sufficient clinical testing either supporting or negating such use.