Clenbuterol
Clenbuterol is a selective beta-2 adrenergic agonist that acts as a bronchodilator to relax airway smooth muscles. It is used to treat respiratory conditions involving bronchospasm, such as asthma and chronic obstructive pulmonary disease (COPD), by opening airways and improving breathing. While primarily approved for veterinary use in many countries, it may be prescribed for human respiratory conditions in some regions.
Clenbuterol is a bronchodilator used to treat asthma and COPD by relaxing airway muscles, though its use varies by country and it is known to be misused for non-medical purposes.
Key facts at a glance
- ATC
- R03AC14
- RxNorm
- 2580
- Generic
- Clenbuterol
- Class
- atc-r03
- Brands
- Ventipulmin
- Availability
- rx
- Lactation
- unknown
- Routes
- oral
- Forms
- solution
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Clenbuterol is indicated for the treatment of bronchospasm associated with asthma, COPD, and other obstructive airway diseases. It helps relieve symptoms such as wheezing, shortness of breath, and difficulty breathing.
As a selective beta-2 adrenergic agonist, clenbuterol stimulates beta-2 receptors in bronchial smooth muscle, causing relaxation and dilation of the airways. This bronchodilation reduces airway resistance and facilitates easier breathing.
Clenbuterol is not FDA-approved for human use in the United States but is used in veterinary medicine and approved for humans in some other countries. Common side effects include tachycardia, tremors, headaches, and hypokalemia. Due to its anabolic properties, it is sometimes misused for weight loss and performance enhancement, which carries significant health risks including cardiac complications.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy