drugset / Trial / NCT00131885
Effects of St. John's Wort on the Oral Contraceptive Hormone Levonorgestrel
Phase 4
Completed
36 enrolled
University of Utah
National Center for Complementary and Integrative Health (NCCIH) · collab
RandomizedParallel-groupSingle-blindTreatment
Summary
This study will determine the effects of St. John's wort, a common herbal remedy, on metabolism of the female contraceptive hormone levonorgestrel.
Timeline
- Start
- 2005-08
- Primary completion
- 2008-05
- Completion
- 2008-05
Drugs
| Evaluation | Drug | Modality | Dose | Route |
|---|---|---|---|---|
| Comparator | Levonorgestrel | Small molecule | 1.5 mg | Oral |
| Comparator | Levonorgestrel | Small molecule | 2.25 mg | Oral |
| Subject | St. John's Wort | Traditional medicine (herbal / TCM) | 900 mg | Oral |
| Subject | St. John's Wort | Traditional medicine (herbal / TCM) | 1500 mg | Oral |
Indications
No indication recorded.