Clenbuterol, a sympathomimetic amine, is primarily used as a bronchodilator to treat respiratory conditions such as asthma and chronic obstructive pulmonary disease (COPD). Additionally, it’s sometimes used off-label as a performance-enhancing drug due to its ability to increase lean muscle mass and reduce body fat. However, its use for this purpose is banned in many sports organizations due to potential side effects and safety concerns.