1-hydroxy-2-naphthoate radical of 1-hydroxy-2-naphthoic acid.
examples of beta-2 agonists include albuterol (ventolin, proventil), metaproterenol (alupent), pirbuterol (maxair), terbutaline (brethaire), isoetharine (bronkosol), and levalbuterol (xopenex). beta-2 agonists with a slower onset of action but a longer period of activity such as salmeterol xinafoate (serevent) are now available. salmeterol has a duration of action of twelve hours and need only be taken twice a day. medicinenet.com
furthermore, the patient's improved pulmonary function with a nebulized formulation of albuterol supports this theory that these inactive ingredients may have caused the reaction. as well, he demonstrated no clinically significant response to advair hfa, which contains only a suspension fluticasone propionate and salmeterol xinafoate in propellant hfa-134a and no other excipients.11 medpagetoday.com