There are no controlled or adequate studies of Omeprazole in pregnant women. Omeprazole is only to be given in these patients if the usage is considerably essential. Although Omeprazole is excreted in low concentration into the breastmilk of female rats, it is not known whether Omeprazole is excreted in human breastmilk. Therefore, the use of Omeprazole during nursing period is not recommended.