Safety and efficacy in pregnant women have not been established. Diclofenac sodium should be used in pregnancy only if the benefits outweigh the risk, when the lowest effective dose should be employed. Use of prostaglandin synthetase inhibitors may result in premature closure of the foetal ductus arteriosus or uterine inertia and therefore are not recommended during the last trimester of pregnancy.
Excretion in breast milk unknown/not recommended.