Sotalol is a medication classified as a combined antiarrhythmic and beta-adrenergic blocker. It is used primarily to treat certain types of irregular heart rhythms such as atrial fibrillation and ventricular tachycardia. The drug works by blocking potassium channels that are responsible for the repolarisation phase of cardiac myocytes. By inhibiting these channels it prolongs the refractory period of the heart tissue reducing the likelihood of abnormal electrical re-entry. At the same time Sotalol blocks beta receptors which diminish the effects of adrenaline on the heart rate and contractility. This combined action on ion channels and adrenergic receptors stabilises the cardiac rhythm and helps maintain a regular heartbeat. The therapeutic effect is achieved through the reduction of ectopic electrical activity that can trigger or sustain arrhythmias. Overall Sotalol provides a dual mechanism that both slows conduction and prolongs repolarisation to prevent cardiac rhythm disturbances.

Sotalol is a synthetic antiarrhythmic medication used to manage and prevent certain heart rhythm disorders. It works by blocking beta-adrenergic receptors, which reduces the influence of adrenaline on the heart and slows heart rate. In addition it blocks potassium channels in cardiac cells, delaying repolarization and prolonging the refractory period of the myocardium. Together these actions help restore normal sinus rhythm and maintain a stable electrical activity in the heart. By decreasing automaticity in the sinoatrial node and slowing conduction through the atrioventricular node Sotalol reduces the likelihood of rapid or irregular beats. This dual mechanism makes it effective for long-term rhythm control in patients with atrial fibrillation or ventricular arrhythmias.

Sotalol may cause dizziness or lightheadedness in some individuals. It can occasionally lead to fatigue or unusual tiredness. Some people report mild nausea or stomach discomfort. Headache is another reported side effect. In rare cases, allergic skin reactions such as rash may occur. Cardiac monitoring is sometimes required due to potential rhythm changes. The medication may affect blood pressure levels temporarily. Overall, side effects vary and are generally mild to moderate.

Sotalol is used to help maintain normal heart rhythm in certain arrhythmias. Fatigue is a frequently reported side effect during the early phase of therapy. Some individuals experience mild nausea or digestive upset that often lessens over time. Dizziness or lightheadedness may occur especially when standing up quickly after sitting or lying down. Headaches are reported by a small proportion of patients taking the medication. In rare instances the drug can affect electrolyte levels which are monitored through routine laboratory assessments. Skin reactions such as rash or itching have been observed in occasional cases. The medication may cause increased heart rate in some people when the dosage is adjusted rapidly.