<p>There are no adequate data from the use of Nitroglycerin in pregnant women. Animal studies are inconclusive with respect to effects on pregnancy embryonal/foetal parturition and postnatal development. This ointment should not be used during pregnancy. It is not known whether Nitroglycerin is excreted in human milk. Due to the potential harmful effects on the breast fed child, the use of this ointment is not recommended during breast feeding.</p>