1. Reversal of the Anticoagulant Effects of Warfarin by Vitamin K1
Jack Hirsh, MD, FCCP 
CHEST 
Volume 114, Issue 6, Pages (December 1998)
DOI: /chest
Copyright © 1998 The American College of Chest Physicians Terms and Conditions

2. FIGURE 1
Vitamin K1 is reduced to Vitamin KH2 by two warfarin-sensitive enzymes (KO-reductase to K-reductase) and the nicotinamide adenine dinucleotide dependent reductase system that is insensitive to warfarin.
CHEST  , DOI: ( /chest )
Copyright © 1998 The American College of Chest Physicians Terms and Conditions