Beta2-agonists are bronchodilaters. There are long acting broncho dilaters like serevent (and a few others as found in Advair, Symbicort
and Dulera) and short acting ones like albuterol. There are about three different forms of albuterol - pributerol (Maxair), albuterol (ProAir and Proventil), and levalbuterol (Xopenex). Other broncho diliaters include caffeine, theophyline, anticholinergics like atrovent and spireva.