Use in pregnancy: The use of heparin in pregnancy has the usual risks for the mother, in particular osteoporosis and thrombocytopenia. Although heparin does not cause malformations, an increased incidence of human foetal loss and prematurity associated with haemorrhage has been reported.
Use in lactation: Heparin is not distributed into milk and heparin therapy is not therefore contra-indicated in women who are breast feeding.