Labetalol

General

• Type: Beta blockers
• Dosage Forms:
• Common Trade Names:

Adult Dosing

• Bolus dosing
  • 20mg IV followed by 40-80mg q10min up to total of 300mg
• Infusion dosing
  • 0.5-2mg/min

Special Populations

• Pregnancy Rating: C
• Lactation: Compatible with breastfeeding
• Renal Dosing
  • Adult
  • Pediatric
• Hepatic Dosing
  • Adult
  • Pediatric

Indications

• hypertension in setting of myocardial ischemia
• hypertension in setting of neurologic injury
• hypertension in setting of preeclampsia/eclampsia

Contraindications

• Allergy to class/drug

Adverse Reactions

• Orthostatic hypotension

Pharmacology

• Half-life: 5-8hrs
• Metabolism: Hepatic via conjugation
• Excretion: Renal 55-60%
• Mechanism of Action:
  • Class II - Nonselective beta blocker
  • Alpha1 blocker
• Onset of action = 2-5min (IV)
• Duration of action = 2-4hr (IV)

See Also

• Antiarrhythmics

References

Authors

Ross Donaldson, Andrew Mason, Daniel Ostermayer, Neil Young