Sign Out
550 mg: Pregnancy: As with other drugs of this type, naproxen sodium/naproxen produces delay in parturition in animals and also affects the human foetal cardiovascular system (closure of the ductus arteriosus). Therefore, naproxen sodium/naproxen should not be used unless clearly needed and directed to do so by a doctor. The use of naproxen sodium/naproxen in pregnancy requires cautious balancing of the possible benefits against potential risk to the mother and foetus, especially during the first and third trimester.
Lactation: Naproxen has been found in the milk of lactating mothers. The use of naproxen sodium/naproxen should therefore be avoided in women who are breast feeding.
Fertility: There is some evidence that drugs which inhibit cyclooxygenase/prostaglandin synthesis may cause impairment of female fertility by an effect on ovulation. This is reversible on withdrawal of treatment.
