<p>Pregnancy Category C. Teratogenic studies were performed with Labetalol in rats and rabbits at oral doses up to approximately six and four times the maximum recommended human dose (MRHD), respectively. No reproducible evidence of fetal malformations was observed. Labetalol Hydrochloride given to pregnant women with hypertension did not appear to affect the usual course of labor and delivery. Small amounts of Labetalol (approximately 0.004% of the maternal dose) are excreted in human milk. Caution should be exercised when Labetalol tablets are administered to a nursing woman.</p>