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Labetalol 100mg is a prescription-only combined alpha- and beta-adrenergic receptor blocking medication (antihypertensive). It is typically supplied in blister packs or bottles containing film-coated tablets.
Prescribed by physicians and obstetricians, it is indicated for the treatment of hypertension (high blood pressure), including hypertension during pregnancy (gestational hypertension and pre-eclampsia), angina pectoris, and hypertension following acute myocardial infarction.
Labetalol exhibits a dual mechanism of action on the sympathetic nervous system:
Selective $\alpha_1$-Blockade: Blocks vascular alpha-1 receptors, causing peripheral vasodilation and relaxing arterial blood vessels to decrease systemic vascular resistance.
Non-Selective $\beta_1$ / $\beta_2$-Blockade: Blocks beta receptors in the heart, preventing reflex tachycardia (rapid heartbeat) and reducing cardiac workload without significantly reducing resting cardiac output.
Blood Pressure Reduction: The combined action lowers arterial blood pressure promptly and smoothly without sudden drops in resting heart rate.
🚨 Critical Medical Warning: Do NOT stop taking labetalol suddenly.
Abruptly discontinuing beta-blockers can cause severe rebound hypertension, angina exacerbation, or heart rhythm disturbances.
Discontinuation must always be carried out gradually under direct medical supervision.
🚨 Respiratory Caution: Labetalol can cause airway constriction (bronchospasm).
Do NOT take labetalol if you have a history of asthma, reactive airway disease, or severe chronic obstructive pulmonary disease (COPD).
🚨 Hepatic Toxicity Notice: Rare cases of severe liver injury have been reported with labetalol.
Contact your doctor immediately if you experience dark urine, severe fatigue, loss of appetite, yellowing of skin or eyes (jaundice), or upper abdominal pain.
🚨 Hypoglycemia Notice: Labetalol may mask warning signs of low blood sugar (hypoglycemia), such as fast heartbeat or tremors (though sweating is usually not masked).
Swallow Whole: Swallow tablets with a glass of water.
Take With Food: Best taken with or immediately after meals. Taking labetalol with food increases its absorption and helps prevent sudden drops in blood pressure upon standing.
Dosing Schedule: Take regularly twice or thrice daily exactly as prescribed by your doctor.
If you miss a dose, take it as soon as you remember unless it is almost time for your next scheduled dose. Do NOT take a double dose to make up for a missed tablet.
Dizziness, lightheadedness, or postural hypotension (feeling faint when standing up).
Tingling sensation on the scalp (scalp tingling, often temporary).
Fatigue, lethargy, or weakness.
Nausea or stomach upset.
Nasal congestion.
Shortness of breath, wheezing, or difficulty breathing.
Extremely slow heartbeat (bradycardia) or cold extremities.
Yellowing of skin or eyes, dark urine, or upper right abdominal pain.
Is Labetalol safe during pregnancy?
Yes. Labetalol is one of the most widely used and preferred first-line medications for managing high blood pressure during pregnancy and pre-eclampsia. However, it must strictly be monitored and adjusted by your obstetrician.
Will Labetalol make me dizzy when I stand up?
Because labetalol dilates blood vessels, postural hypotension (dizziness when standing) can occur, especially when starting treatment or increasing the dose. Rise slowly from sitting or lying positions to minimize this effect.
How should I store this medication?
Keep tablets inside their original blister packaging or container. Store in a cool, dry place strictly below 25°C or 30°C, protected from direct sunlight and moisture. Keep strictly out of reach of children.
Labetalol is a strictly regulated prescription medication. To ensure verified authentic pharmaceuticals, optimal storage, and professional advice, you can present your valid medical prescription at Sanlive Pharmacy & Stores for verified supply and doorstep delivery anywhere in Nigeria.
Notice: Labetalol is a prescription-only medication that must be initiated and managed by a qualified medical practitioner. Never adjust doses or stop treatment without explicit physician instruction. If fainting, severe shortness of breath, or chest discomfort occurs, seek immediate emergency medical evaluation.
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