ATC Code G02CA03, R03AC04, R03CC04
Formula C17H21NO4
Molar Mass (g·mol−1) 303,35
Physical State solid
Melting Point (°C) 222–223
CAS Number 13392-18-2
PUB Number 3343
Drugbank ID DB01288
Solubility moderate in water / poor in ethanol


Fenoterol is a drug from the class of β2-sympathomimetics. It belongs to the group of bronchodilators and is used, for example, in bronchial asthma or COPD to facilitate breathing. Fenoterol is always administered in the form of a spray or aerosol. There are also intravenous applications to inhibit contractions. Medicines containing fenoterol require a prescription and are available as mono- or combination preparations.



The mechanism of action of fenoterol is based on binding to β2-adrenoreceptors in the lung. This activates the enzyme adenylate cyclase, and subsequently increases the level of the neurotransmitter cAMP. An increased concentration of cAMP causes a relaxation of the bronchial musculature and thus a widening of the bronchial tubes. This makes breathing considerably easier.


Fenoterol is broken down in the liver cells and subsequently excreted by the kidneys.


Signs of overdose include chest pain, dizziness, dry mouth, headache, high or low blood pressure, flu-like symptoms, high blood sugar, muscle cramps, nausea, tremors, and seizures.

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Markus Falkenstätter

Markus Falkenstätter

Markus Falkenstätter is a writer on pharmaceutical topics in Medikamio's medical editorial team. He is in the last semester of his pharmacy studies at the University of Vienna and loves scientific work in the field of natural sciences.

Mag. pharm Stefanie Lehenauer

Mag. pharm Stefanie Lehenauer

Stefanie Lehenauer has been a freelance writer for Medikamio since 2020 and studied pharmacy at the University of Vienna. She works as a pharmacist in Vienna and her passion is herbal medicines and their effects.

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