<unk>  is a bronchodilator that is FDA approved for the treatment of mild symptoms of intermittent asthma.   Common adverse reactions include headache, nausea, tremor, sweating and restlessness.
Racepinephrine hydrochloride
Adenosine
Epinephrine 
Emedastine Difumarate
Dextromoramide
Tepoxalin
Terodiline
Metaproterenol