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Evidence-Based Supplement Research

Evidence-Based Supplement Research

Vitamin K1 and Improved Time-in-Therapeutic-Range

Doses used in studies

μg/day: 200 (median 200, IQR 200–200) — 1 study

Time to effect

Median: 6 months · IQR 6 months–6 months · Range 6 months–6 months — Reported in 1 of 1 study

1 of 1 paper

Effect of 200μG/day of vitamin K1 on the variability of anticoagulation control in patients on warfarin: a randomized controlled trial.
- 2013-09
- RCT · n = 54
- Thrombosis research 132(3)
- - Habeeb Majeed
  - Marc Rodger
  - Melissa Forgie
  - Marc Carrier
  - Monica Taljaard
  - Dimitrios Scarvelis
  - Carol Gonsalves
  - Rosendo A Rodriguez
  - Philip S Wells
- PubMed: 23953594
- DOI: 10.1016/j.thromres.2013.07.019
4 Insights on
- Improved Time-in-Therapeutic-Range
- High evidence
- Clinical
There was no effect on the change scores of the (%) TTR (p=0.98)
Effect
Neutral
Effect size
Small
Significant
No
Dose
200 μg/day