<unk> , sold under the brand name Betapace among others, is a medication used to treat and prevent abnormal heart rhythms. It is only recommended in those with significant abnormal heart rhythms due to potentially serious side effects. Evidence does not support a decreased risk of death with long term use. It is taken by mouth or injection into a vein. Common side effects include a slow heart rate, chest pain, low blood pressure, feeling tired, dizziness, shortness of breath, problems seeing, vomiting, and swelling. Other serious side effects may include QT prolongation, heart failure, or bronchospasm.<unk>  is a non-selective beta-adrenergic receptor blocker which has both class II and class III antiarrhythmic properties.<unk>  was first described in 1964 and came into medical use in 1974. It is available as a generic medication. In 2017, it was the 267th most commonly prescribed medication in the United States, with more than one million prescriptions.
Sotalol
Esmolol
Verapamil
Amiodarone
Bisoprolol
Carvedilol
Ibutilide
Metoprolol