# Does Low Dose Oral Vitamin K Improve International Normalized Ratio (INR) Stability?

> **NCT00990158** · PHASE3 · COMPLETED · sponsor: **St. Joseph's Healthcare Hamilton** · enrollment: 235 (actual)

## Conditions studied

- Coagulation
- Bleeding
- Thrombosis

## Interventions

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

## Key facts

- **NCT ID:** NCT00990158
- **Lead sponsor:** St. Joseph's Healthcare Hamilton
- **Sponsor class:** OTHER
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2010-07
- **Primary completion:** 2014-04
- **Final completion:** 2014-04
- **Target enrollment:** 235 (ACTUAL)
- **Last updated:** 2015-05-21

## Collaborators

- [object Object]
- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00990158

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00990158, "Does Low Dose Oral Vitamin K Improve International Normalized Ratio (INR) Stability?". Retrieved via AI Analytics 2026-07-28 from https://api.ai-analytics.org/clinical/NCT00990158. Licensed CC0.

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