Pregnancy: Pregnancy category B.
Lansoprazole IV should be used in pregnant women or women having possibilities of being pregnant only if the expected therapeutic benefit is thought to outweigh any possible risk.
Lactation: It is not known if lansoprazole is excreted in breast milk. Due to the potential for serious adverse reactions in the breast-feeding infant, a decision should be made whether to discontinue breast-feeding or the drug, taking into account the importance of treatment to the mother.