labetalol, Normodyne, Trandate (cont.)

Pharmacy Author:
Medical and Pharmacy Editor:

NURSING MOTHERS: Labetalol is excreted in human breast milk. Therefore, it should be used cautiously in nursing mothers because of the risk that the infant may develop a slow heart rate.

SIDE EFFECTS AND PRECAUTIONS: The most common side effects of labetalol are fatigue, dizziness, nausea, headache, diarrhea, edema (fluid accumulation), and shortness of breath. Postural hypotension (a rapid decrease in blood pressure when going from the lying or seated position to the standing position that may cause light-headedness or fainting) occurs rarely. Patients should be observed for this possible side effect within two to four hours of the first labetalol dose and after any changes in dose. Sexual dysfunction, abnormal heart rhythm, slow heart rate, liver failure, and allergic reactions may occur.

Reference: FDA Prescribing Information

Last Editorial Review: 2/2/2012

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