ClinicalTrials.gov
 Home    Search    Study Topics    Glossary  
 

  Full Text View  
  Tabular View  
  Contacts and Locations  
  No Study Results Posted  
  Related Studies  
Effects of St. John's Wort on the Effectiveness of Oral Contraceptives

This study has been completed.

Sponsored by: National Center for Complementary and Alternative Medicine (NCCAM)
Information provided by: National Center for Complementary and Alternative Medicine (NCCAM)
ClinicalTrials.gov Identifier: NCT00026013
  Purpose

The purpose of this study is to evaluate the effects of a common herbal remedy, St. John's Wort, on the effectiveness of birth control pills. St. John's Wort has recently been shown to increase metabolism of some drugs. If it could increase metabolism of oral contraceptives as well, it may increase the risk of contraceptive failure and unintended pregnancy. Study participants will be evaluated for risk of ovulation on oral contraceptives before and during simultaneous therapy with St. John's Wort.


Condition Intervention
Contraception
Drug: hypericum perforatum

MedlinePlus related topics:   Birth Control   

U.S. FDA Resources

Study Type:   Interventional
Study Design:   Treatment, Non-Randomized, Single Blind, Placebo Control, Single Group Assignment, Pharmacokinetics/Dynamics Study
Official Title:   Effects of Hypericum Perforatum on Effectiveness of Oral Contraceptives

Further study details as provided by National Center for Complementary and Alternative Medicine (NCCAM):

Estimated Enrollment:   25
Study Start Date:   January 2002
Estimated Study Completion Date:   January 2004

Detailed Description:

See Brief Summary

  Eligibility
Ages Eligible for Study:   18 Years to 40 Years
Genders Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes

Criteria

Inclusion Criteria:

  • Women taking or willing to take low dose oral contraceptives for 5 months
  • No contraindications to hormonal contraception
  Contacts and Locations

Please refer to this study by its ClinicalTrials.gov identifier: NCT00026013

Locations
United States, New York
Columbia University Department of Obstetrics & Gynecology    
      New York, New York, United States, 10032

Sponsors and Collaborators

Investigators
Principal Investigator:     Patricia Murphy, DrPh     Columbia University    
  More Information


Study ID Numbers:   R21 AT000836-01
First Received:   November 5, 2001
Last Updated:   August 17, 2006
ClinicalTrials.gov Identifier:   NCT00026013
Health Authority:   United States: Federal Government

Keywords provided by National Center for Complementary and Alternative Medicine (NCCAM):
contraception  
hormonal contraception  
herbal remedies  
hypericum perforatum  
contraceptive effectiveness  

ClinicalTrials.gov processed this record on December 03, 2008




Links to all studies - primarily for crawlers