Arbutamine is a

cardiac stimulant A cardiac stimulant is a drug which acts as a stimulant of the heart – e.g., via positive chronotropic action (increased heart rate) and/or inotropic action (increased myocardial contractility). They increase cardiac output (the amount of blood ...

. It stimulates β

adrenergic receptor The adrenergic receptors or adrenoceptors are a class of G protein-coupled receptors that are targets of many catecholamines like norepinephrine (noradrenaline) and epinephrine (adrenaline) produced by the body, but also many medications like b ...

References

Beta-adrenergic agonists Catecholamines Cardiac stimulants Phenylethanolamines {{cardiovascular-drug-stub