Labetalol Dosing for Hypertension

Intravenous Labetalol for Hypertensive Emergencies

For non-stroke hypertensive emergencies, the American College of Cardiology recommends an initial dose of 0.3-1.0 mg/kg (maximum 20 mg) slow IV injection every 10 minutes, with a maximum cumulative dose of 300 mg, which can be repeated every 4-6 hours 1, 2
For ischemic stroke patients not eligible for thrombolytic therapy with systolic BP >220 mmHg or diastolic 121-140 mmHg, the American Heart Association recommends labetalol 10-20 mg IV over 1-2 minutes, with a goal of 10-15% reduction in blood pressure 3, 4
For ischemic stroke patients eligible for thrombolytic therapy, the American Heart Association recommends pre-treatment with labetalol 10-20 mg IV over 1-2 minutes for systolic >185 mmHg or diastolic >110 mmHg, and during/after treatment, labetalol 10 mg IV over 1-2 minutes for systolic >230 mmHg or diastolic 121-140 mmHg 3, 4, 5

The American College of Cardiology notes that labetalol is particularly useful in hypertensive emergencies with hyperadrenergic states, but is contraindicated in reactive airways disease or chronic obstructive pulmonary disease 1, 2
The European Society of Cardiology states that labetalol may worsen heart failure and should not be given in patients with second or third-degree heart block or bradycardia 1, 2
The European Heart Journal reports that for pregnant patients with hypertension, labetalol is considered safe with no evidence of adverse effects in mothers or babies 6

La dosis recomendada de labetalol oral para hipertensión es de 200-800 mg al día, administrada dos veces al día, pudiendo aumentarse hasta un máximo de 2400 mg diarios según la respuesta del paciente, según el American College of Cardiology 7

Labetalol is a first-line agent for hypertension in pregnancy, with dosing that may need to be adjusted to three or four times a day due to accelerated drug metabolism during pregnancy, according to the American Heart Association 8
The American Heart Association suggests that labetalol may be less effective in the postpartum period compared to calcium channel blockers and may be associated with a higher risk of readmission 8

The American College of Cardiology recommends avoiding atenolol during pregnancy due to the risk of fetal growth restriction 8
Patients with reactive airway disease or COPD should not use labetalol, as stated by the American Heart Association 8