Vitamin K

Dr Craig Hacking et al.

Vitamin K (phylloquinone and menaquinone) are a group of fat soluble vitamins required for blood clotting homeostasis. Menaquinone is synthesised by normal flora in the intestine. Vitamin K serves as a coenzyme for the clotting factors 2, 7, 9 and 10. Warfarin inhibits vitamin K.

Pathological manifestations are rare. Hypervitaminosis K can lead to jaundice and anaemia in the newborn.

Share article

Article information

rID: 49232
System: Paediatrics
Section: Pathology
Synonyms or Alternate Spellings:

Support Radiopaedia and see fewer ads

Updating… Please wait.

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.