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fenoterol

n. A Beta 2 adrenergic agonist designed to open up the airways to the lungs.

Wikipedia
Fenoterol

Fenoterol is a β adrenoreceptor agonist designed to open up the airways to the lungs. It is classed as sympathomimetic β agonist and asthma medication.

Fenoterol is produced and sold by Boehringer Ingelheim as Berotec N and in combination with ipratropium as Berodual N.