Major Uses

Clenbuterol is a drug most commonly used in horses for its bronchodilating properties. Clenbuterol is used to relieve reversible bronchospasm and to treat respiratory conditions caused by airway obstruction and allergies such as chronic obstructive pulmonary disease.

Common Precautions

Side effects most commonly associated with the use of clenbuterol are muscle tremors, sweating, increased heart rate, restlessness, and incoordination.

Clenbuterol should not be administered in animals with a known allergy or hypersensitivity to the drug. Clenbuterol should not be administered in pregnant animals. Animals with heart disease or anhidrosis should not take clenbuterol. Possible allergic reactions can occur with use of Clenbuterol. Side effects may include facial swelling, cold limbs, diarrhea, hives, and scratching. Emergency veterinary care should be sought if an animal experiences any unusual symptoms.


Clenbuterol should be stored at room temperature in a tight container out of direct sunlight. Clenbuterol should be kept from freezing.


Clenbuterol is available in tablet form as well as syrup in 330 ml and 100 ml sizes.

A typical dose range for clenbuterol is 0.8 micrograms/kg (practically 0.5 ml of syrup/100lb. BW) twice daily for 3 days. Dose may vary in different species, when the drug is given by a different route or concurrently with other medications, and with regards to a patient's age, breed, and health status. A veterinarian's dosing instructions and/or those printed on the medication label should be followed closely.

If a dose is missed, it should be administered as soon as possible. If it is almost time for the subsequent dose, the missed dose should be skipped and the regular administration schedule resumed. Two doses of clenbuterol should not be administered at the same time.

This information is for general reference only and should not be used for the diagnosis or treatment of any condition of your pet. It's intended as a general reference, this information may not include all possible uses, precautions, directions, reactions (including allergic), drug interactions, or withdrawal times. Always consult your local veterinarian and have your pet examined for any advice concerning the diagnosis and treatment of your pet, including which products and doses are most appropriate. Any trademarks are the property of their respective owners. VetDepot is not a pharmacy. All prescription products are dispensed by our Pharmacy Partner. Article last updated 2/2014.