Clenbuterol is a sympathomimetic bronchodilator with beta-2 adrenergic activity. It has been used medically as a bronchodilator in some countries, although its regulatory status varies substantially between jurisdictions.

The Clembutrex 40 listing identifies a 40 mcg presentation from XtLabs. The available information does not establish whether the product is supplied as tablets, another dosage form, or a specific pack quantity.

Because clenbuterol can produce significant cardiovascular and nervous-system effects, its use requires appropriate medical oversight. GORoids should verify the exact formulation, labeling, manufacturer information, storage requirements, and local regulatory status before publication.