# Low Dose Supplementation to Improve Anticoagulation Control With Oral Vitamin K as an Adjuvant to Warfarin Therapy

> **NCT00794755** · PHASE3 · COMPLETED · sponsor: **Ottawa Hospital Research Institute** · enrollment: 100 (estimated)

## Conditions studied

- Coagulation

## Interventions

- **DIETARY_SUPPLEMENT:** Vitamin K1 (Phytonadione)
- **DIETARY_SUPPLEMENT:** Placebo

## Key facts

- **NCT ID:** NCT00794755
- **Lead sponsor:** Ottawa Hospital Research Institute
- **Sponsor class:** OTHER
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2008-11
- **Primary completion:** 2010-04
- **Final completion:** 2010-04
- **Target enrollment:** 100 (ESTIMATED)
- **Last updated:** 2011-07-27


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00794755

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00794755, "Low Dose Supplementation to Improve Anticoagulation Control With Oral Vitamin K as an Adjuvant to Warfarin Therapy". Retrieved via AI Analytics 2026-06-12 from https://api.ai-analytics.org/clinical/NCT00794755. Licensed CC0.

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