Indications for: Labetalol HCl Injection

Severe hypertension.

Adult Dosage:

Individualize. Maintain supine position; monitor BP. Repeated IV inj: 20mg over 2 minutes, may give additional 40mg or 80mg at 10 minute intervals up to max total dose of 300mg or until desired supine BP. Slow continuous infusion: 2mg/min (see literature).

Children Dosage:

Not recommended.

Labetalol HCl Injection Contraindications:

Bronchial asthma. Overt cardiac failure. 2nd- or 3rd- degree AV block. Cardiogenic shock. Severe bradycardia. Other conditions associated with severe and prolonged hypotension. History of obstructive airway disease (eg, asthma).

Labetalol HCl Injection Warnings/Precautions:

Ischemic heart disease or failure. Monitor hepatic function: discontinue at first sign of liver injury. If signs of cardiac failure, treat with digitalis or diuretic, discontinue if failure continues. Increased risk for hypoglycemia esp. in diabetics or those who are fasting (eg, surgery, not eating regularly, or vomiting). COPD. Pheochromocytoma. Diabetes. Surgery. Avoid abrupt cessation. Elderly. Pregnancy. Nursing mothers.

Labetalol HCl Injection Classification:

Noncardioselective beta-blocker/alpha-1 blocker.

Labetalol HCl Injection Interactions:

Caution with verapamil. Potentiates hypotension with nitroglycerin. May blunt effects of epinephrine, β-agonist bronchodilators. Avoid alkaline drugs (eg, furosemide) administration in same infusion line. Adjust antidiabetic medication. Potentiated by cimetidine and halothane. Tremor with tricyclic antidepressants. May cause false positive urine test for amphetamine.

Adverse Reactions:

Symptomatic postural hypotension, GI upset, dizziness, increased BUN and serum creatinine, paresthesias, sweating, somnolence, flushing, ventricular arrhythmia, vertigo, pruritus.


Formerly known under the brand names Normodyne, Trandate.



Drug Elimination:

Renal, fecal. Half-life: ~5.5 hours.

How Supplied:

Contact supplier.