Excerpt from http://www.coloradohealthnet.org/asthma/asthma_comp2.html
More properly known as Beta-adrenergic agonists Beta2-agonists relax airways, smooth muscle and may
modulate mediator release from mast cells and basophils. The desirable effects of beta2-adrenergic
agonists in asthma therapy result from their action on beta2-adrenergic receptors.
Commonly used to relieve the symptoms of Asthma