Valproic Acid Injection |
Depacon; Valproate Sodium |
Clinical Trial: Relationship Between Folic Acid and Warfarin Metabolism and Effect
This study is currently recruiting patients.
Verified by Hadassah Medical Organization August 2004
|
Purpose
Folic acid supplementation has been shown previously to be associated with enhanced formation of p-HPPH from phenytoin, a metabolic pathway which is predominantly mediated through the activity of CYP2C9.
The metabolism of S warfarin, the more active enantioner of warfarin, is also mediated predominantly through the activity of CYP2C9.
The purpose of the present study was to examine the relationship between folic acid concentration and warfarin pharmacokinetic as well as warfarin dose requirement among patients treated by warfarin. In addition the effect of folic acid supplementation (5 mg/d) for 3 weeks on warfarin pharmacokinetic and warfarin dose requirement will be evaluated in the second part of the study.
| Condition | Intervention |
|---|---|
| Folic Acid Deficiency | Drug: Folic acid |
MedlinePlus related topics: Folic Acid
Study Type: Interventional
Study Design: Treatment, Non-Randomized, Open Label, Uncontrolled, Single Group Assignment, Pharmacokinetics/Dynamics Study
Official Title: The Effect of Folic Acid Concentration and Folic Acid Supplementation on Warfarin Pharmacokinetic and Warfarin Dose Requirement at Steady State.
Expected Total Enrollment: 400
Study start: August 2001
Eligibility
Inclusion Criteria:
Exclusion Criteria:
- Refusal to participate in the study
Location and Contact Information
Israel
Hadassah Medical Organization, Jerusalem, Israel; Recruiting
Hadas Lemberg, PhD 00 972 2 6777572 lhadas@hadassah.org.il
Yoseph Caraco, MD, Principal Investigator
Yoseph Caraco, MD, Principal Investigator, Hadassah Medical Organization
More Information
Last Updated: September 12, 2005
Record first received: September 11, 2005
ClinicalTrials.gov Identifier: NCT00162409
Health Authority: Israel: Israeli Health Ministry Pharmaceutical Administration
ClinicalTrials.gov processed this record on 2005-09-13
Resources
- Depacon (Drug Digest)
- Valproate Sodium (Drug Digest)

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