Daily Vitamin K in Patients on Warfarin With Unstable INRs

Completed · Not applicable

Conditions studied: Anticoagulants, Warfarin

In brief

The purpose of this study is to determine if daily Vitamin K supplementation stabilizes INRs in patients taking warfarin with a history of frequent dose changes or variable INRs.

Key facts

Study ID

NCT00287313

Run by

University of North Carolina, Chapel Hill

People needed

15

Starts

2005-10-01

Expected to finish

2006-05-01

Last updated by the study team

2010-01-12

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Patient of UNC Anticoagulation Clinic with INR target of 2.0-3.0 and at least 9 months on uninterrupted warfarin
• Unstable INRs for the past 6 months, defined as a minimum number of warfarin dose changes of 3
• Patient demonstration of proper POC device technique on 2 measurements during one teaching session with investigator
• Age greater than or equal to 18 years

You may not qualify if…

• Stroke or TIA within the previous 12 months
• VTE within the last 3 months
• Antiphospholipid antibody syndrome
• Pregnant patients, since warfarin is contraindicated during pregnancy

Where it is running

• University of North Carolina at Chapel Hill — Chapel Hill, North Carolina, United States

Full record on ClinicalTrials.gov

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