NCT00131885View on ClinicalTrials.gov

Effects of St. John's Wort on the Oral Contraceptive Hormone Levonorgestrel

PHASE4CompletedINTERVENTIONAL
Enrollment

36

Participants

Timeline

Start Date

August 31, 2005

Primary Completion Date

May 31, 2008

Study Completion Date

May 31, 2008

Conditions
Contraception
Interventions
DIETARY_SUPPLEMENT

Placebo Control (Placebo Herb)

Placebo herb three times daily (ground cellulose) for 4-6 weeks

DIETARY_SUPPLEMENT

St. John's Wort

St. John's Wort (Hypericum perforatum) orally or 4-6 weeks

DRUG

Levonorgestrel

Levonorgestrel in a single oral dose

Trial Locations (1)

84112

University of Utah, Salt Lake City

All Listed Sponsors
collaborator

National Center for Complementary and Integrative Health (NCCIH)

NIH

lead

University of Utah

OTHER

NCT00131885 - Effects of St. John's Wort on the Oral Contraceptive Hormone Levonorgestrel | Biotech Hunter | Biotech Hunter