Clenbuterol Tablets 40 mcg are a potent bronchodilator originally developed to treat respiratory conditions such as asthma by relaxing airway muscles and improving breathing. Although not approved for human use in many countries, including the United States, it is sometimes used in veterinary medicine for horses. Clenbuterol is also known for its thermogenic and stimulant properties, which can increase metabolic rate and promote fat loss. Because of these effects, it has been misused in bodybuilding and weight-cutting contexts.