Labetalol
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Sheng Shi, M.D. [2]
For patient information about Labetalol, click here
Synonyms / Brand Names: TRANDATE®（discontinued）NORMOZIDE®（discontinued）NORMODYNE®（discontinued）
Overview
Labetalol (Normodyne, Trandate, fixed combination with hydrochlorothiazide: Normozyde) is an alpha-1 andbeta adrenergic blocker used to treat high blood pressure. It works by blocking these adrenergic receptors, which slows sinus heart rate, decreases peripheral vascular resistance.
It has a particular indication in the treatment of pregnancy-induced hypertension.
Category
Cardiovascular Drugs:Beta blockers
FDA Package Insert
Labetalol Hydrochloride injection
| Indications and Usage | Dosage and Administration | Dosage Forms and Strengths | Contraindications | Warnings and Precautions | Adverse Reactions | Drug Interactions | Use in Specific Populations | Overdosage | Description | Clinical Pharmacology | Nonclinical Toxicology | How Supplied/Storage and Handling | Patient Counseling Information | Labels and Packages
Labetalol Hydrochloride tablet
| Indications and Usage | Dosage and Administration | Dosage Forms and Strengths | Contraindications | Warnings and Precautions | Adverse Reactions | Drug Interactions | Use in Specific Populations | Overdosage | Description | Clinical Pharmacology | Nonclinical Toxicology | How Supplied/Storage and Handling | Patient Counseling Information | Labels and Packages
Mechanism of Action
The mechanism of action of the antihypertensive response of Labetalol has not been definitively established. Possible factors that may be involved include: (1) decreased heart rate, (2) decreased myocardial contractility, (3) diminution of tonic sympathetic outflow to the periphery from cerebral vasomotor centers, (4) suppression of renin activity and (5) vasodilation and decreased peripheral vascular resistance.