Abstract
A 28-year-old woman in labor developed a severe anaphylactoid reaction, necessitating acute cesarean section, with subsequent neonatal death, after receiving 10 mg of phytomenadione (Konakion®) by the intramuscular route. Allergologic investigations revealed no type I reaction against the drug, and the symptoms were considered to be caused by drug-induced intolerance. Prophylactic administration of phytomenadione to the infant rather than to the parturient is recommended.