What is Vitamin K1 (phytonadione)?

Category: Supplements

Most popular types: Mephyton


Vitamin k 1 or phytonadione is a fat soluble vitamin used to promote proper growth and good health, for vitamin K deficiency, as a supplement for people who cannot digest fat soluble vitamins, and to prevent or treat bleeding.

Reported purpose & perceived effectiveness
Purpose Patients Evaluations Perceived Effectiveness
Increase effect of another treatment 4 0
Cystic fibrosis 1 0
Fat malabsorption 1 0
Support immune health 1 0

  • Major
  • Moderate
  • Slight
  • None
  • Can't tell


Based on patients currently taking Vitamin K1 (phytonadione)

Dosage Patients
100 mcg daily 1
120 mcg daily 1
125 mcg daily 1

Why patients stopped taking Vitamin K1 (phytonadione)

Multiple reasons could be selected

Reason Patients
Other 1
See 1 patient who's stopped taking Vitamin K1 (phytonadione)


Currently taking Vitamin K1 (phytonadione)

Duration Patients
1 - 6 months 1
2 - 5 years 1
10 years or more 1

Stopped taking Vitamin K1 (phytonadione)

Duration Patients
Less than 1 month 1
Last updated:
There are no evaluations for Vitamin K1 (phytonadione).