# Effects of St. John's Wort on the Effectiveness of Oral Contraceptives

> **NCT00026013** · NA · COMPLETED · sponsor: **National Center for Complementary and Integrative Health (NCCIH)** · enrollment: 25 (—)

## Conditions studied

- Contraception

## Interventions

- **DRUG:** hypericum perforatum

## Key facts

- **NCT ID:** NCT00026013
- **Lead sponsor:** National Center for Complementary and Integrative Health (NCCIH)
- **Sponsor class:** NIH
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2002-01
- **Primary completion:** —
- **Final completion:** 2004-01
- **Target enrollment:** 25 (—)
- **Last updated:** 2006-08-18


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00026013

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00026013, "Effects of St. John's Wort on the Effectiveness of Oral Contraceptives". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT00026013. Licensed CC0.

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