Is Phenprocoumon safe while breastfeeding?
Here is what NIH LactMed, the U.S. National Library of Medicine's authority on medicines and breastfeeding, reports about Phenprocoumon. This is a summary of that source — not our own verdict.
Effects on the breastfed infant
Relevant published information was not found as of the revision date.
Effects on milk supply
Relevant published information was not found as of the revision date.
Levels in milk
Maternal Levels. One mother required anticoagulation postpartum was given phenprocoumon as an anticoagulant. Milk samples were obtained on days 27, 28 and 31 postpartum when her prothrombin time and phenprocoumon serum concentrations were stable. Milk phenprocoumon concentrations varied between 26 and 76 mcg/L and concentrations were higher in hindmilk than foremilk. A complete 24-hour milk collection contained a concentration of 33 mcg/L of phenprocoumon.[ 1 ] Infant Levels. Relevant published information was not found as of the revision date.
Alternatives LactMed lists
“No published information” means the studies do not exist yet — not that Phenprocoumon is known to be harmful, and not that it is known to be safe. Your prescriber or pharmacist can weigh your baby's age and whether a better-studied alternative would do the same job. Worth asking before stopping a medicine you need.
Source: NIH LactMed (National Library of Medicine).
Educational summary of an authoritative source — not medical advice. Never start, stop, or change a medicine while breastfeeding without confirming with your doctor.