Pregnancy: Studies in animals have shown reproductive toxicity (see Pharmacology: Toxicology: Preclinical Safety under Actions). The potential risk for humans is unknown.
Beta-blockers reduce placental perfusion, which may result in intrauterine foetal death, and immature and premature deliveries. In addition, adverse effects (especially hypoglycaemia and bradycardia) may occur in the foetus and neonate. There may be an increased risk of cardiac and pulmonary complications in the neonate in the postnatal period. There is no evidence from animal studies that carvedilol has any teratogenic effects.
There is no adequate clinical experience with carvedilol in pregnant women.
Carvedilol should not be used during pregnancy unless the potential benefit outweighs the potential risk.
Nursing Mothers: Animal studies demonstrated that carvedilol and/or its metabolites are excreted in rat breast milk. The excretion of carvedilol in human milk has not been established. However, most β-blockers, in particular lipophilic compounds, will pass into human breast milk although to a variable extent. Breast feeding is therefore not recommended following administration of carvedilol.
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