Beta1-adrenergic agonists

Isoprenaline, also known as isoproterenol and sold under the brand name Isuprel among others, is a sympathomimetic medication which is used in the treatment of acute bradycardia (slow heart rate), heart block, and rarely for asthma, among other indications. It is used by injection into a vein, muscle, fat, or the heart, by inhalation, and in the past under the tongue or into the rectum.

Dobutamine is a medication used in the treatment of cardiogenic shock (as a result of inadequate tissue perfusion) and severe heart failure. It may also be used in certain types of cardiac stress tests. It is given by IV only, as an injection into a vein or intraosseous as a continuous infusion. The amount of medication needs to be adjusted to the desired effect. Onset of effects is generally seen within 2 minutes. It has a half-life of two minutes. This drug is generally only administered short term, although it may be used for longer periods to relieve symptoms of heart failure in patients a

Ractopamine () is an animal feed additive used to promote leanness and increase food conversion efficiency in farmed animals in few countries, banned in most. Pharmacologically, it is a phenol-based TAAR1 agonist and β adrenoreceptor agonist that stimulates β1 and β2 adrenergic receptors. It is most commonly administered to animals for meat production as ractopamine hydrochloride. It is the active ingredient in products marketed in the US as Paylean for swine, Optaflexx for cattle, and Topmax for turkeys. It was developed by Elanco Animal Health, a former division of Eli Lilly and Company.

Xamoterol, sold under the brand names Corwin, Carwin, Corwil, and Xamtol among others, is a cardiac stimulant which is used in the treatment of heart failure. It acts as a selective partial agonist of the β1-adrenergic receptor with around 50% intrinsic sympathomimetic activity (ISA) (i.e., intrinsic activity). The drug has no significant β2-adrenergic receptor agonistic activity. Xamoterol provides cardiac stimulation at rest but acts as a blocker during exercise. It is taken by mouth.

Denopamine (INN) is a drug which acts as a β1 adrenergic receptor agonist. It is used in the treatment of angina and may also have potential uses in the treatment of congestive heart failure and for clearing pulmonary edema. It is marketed in Japan under the brand name Kalgut and available as tablets of 5 and 10 mg, and 5% fine granules.

Prenalterol, sold under the brand name Hyprenan, is a sympathomimetic agent and cardiac stimulant which acts as a β1-adrenergic receptor partial agonist and is used in the treatment of heart failure. It has selectivity for the β1-adrenergic receptor. Its partial agonist activity or intrinsic sympathomimetic activity is about 60%. It is said to have much greater impact on myocardial contractility than on heart rate. The drug has been marketed in Denmark, Norway, and Sweden.