Beta-blockers, also called beta-adrenergic blocking agents, are drugs that reduce the sympathetic response of the body by blocking the effect of adrenaline. List of Beta blockers: • Atenolol • Propranolol • Nadolol • Bisoprolo • Acebutol • Nebivolol • Esmolol • Labetalol Doctors administer beta-blockers before starting electroconvulsive therapy to control tachycardia and rise in blood pressure which might be induced after the treatment. Patients with hypertension are more prone to tachycardia, thus beta-blockers must be administered to them at all cost. Esmolol is the preferred drug, however, depending on the dose, it can shorten the duration of the seizure. Labetalol is an alternative beta-blocker that has a lesser effect on the duration of the seizure.