<unk>  is a cardiac stimulant. It works by binding to the β1 adrenergic receptor. It is a 3rd generation adrenergic beta receptor partial agonist. It provides cardiac stimulation at rest but it acts as a blocker during exercise.
Xamoterol
Formoterol
Levosalbutamol
Arformoterol tartrate
Tulobuterol
Fluticasone
Tiotropium
Montelukast