Labetalol Warnings & Precautions

Before taking Labetalol, inform your doctor of all your medical conditions and medications. Certain conditions and patient groups require special precautions or may make Labetalol unsuitable.

Key Warnings

→Contraindicated in uncontrolled asthma or severe COPD (bronchoconstriction risk)
→Contraindicated in second or third degree heart block
→Do not stop abruptly — risk of rebound angina and myocardial infarction
→Use with caution in diabetes (masks hypoglycaemia warning signs)

Pregnancy and Breastfeeding

→Some beta blockers (labetalol, metoprolol) are used in pregnancy for hypertension. Atenolol is associated with fetal growth restriction and should be avoided. Use under specialist supervision.

Older Adults

→Increased risk of bradycardia, heart block, and falls. Start low and titrate carefully. Monitor for fatigue and cold extremities.

Chronic Conditions

→Avoid in asthma. Use with caution in COPD (cardioselective agents preferred). In diabetes, be aware of masked hypoglycaemia.

When Not to Use

→Uncontrolled bronchial asthma
→Second or third degree AV block without pacemaker
→Severe bradycardia or sick sinus syndrome
→Cardiogenic shock
→Untreated phaeochromocytoma

Safety Note

Labetalol should only be taken as prescribed. If you have any concerns about whether Labetalol is suitable for you, consult your doctor or pharmacist.

Frequently Asked Questions

Is Labetalol safe for everyone?

Labetalol is not suitable for everyone. Contraindicated in uncontrolled asthma or severe COPD (bronchoconstriction risk) Always inform your doctor of all medical conditions before starting Labetalol.

Why can't I stop my beta blocker suddenly?

Long-term beta blockade causes upregulation of beta receptors. Sudden discontinuation leads to receptor hypersensitivity, which can cause rebound tachycardia, hypertension, and angina — potentially triggering a heart attack. Always taper gradually under medical supervision.

More About Labetalol

Dosage & Administration

Side Effects

Drug Interactions

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Medical Disclaimer: This drug reference is provided for informational purposes only and is not a substitute for professional medical advice. Always consult your physician or pharmacist before changing your medication. Information reviewed by the vHospital Editorial Team · Sources: WHO, BNF, FDA prescribing information.