Phase II Trial of Silymarin for Patients With Chronic Hepatitis C Who Have Failed Conventional Antiviral Treatment
Public ClinicalTrials.gov record NCT00680342. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Multicenter, Randomized, Double-masked, Placebo-controlled Phase II Study to Assess the Safety and Efficacy of a Standardized Orally Administered Silymarin Preparation (Legalon) for the Treatment of Patients With Chronic Hepatitis C Who Failed Conventional Antiviral Therapy
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Silymarin (Legalon), also known as milk thistle, is an alternative medicine commonly found in health food and vitamin stores. People with liver disease sometimes use silymarin because it is thought to have liver protecting effects; however, this benefit has not been proven. The purpose of this research study is to determine the effectiveness of silymarin and assess the safety of different silymarin doses in patients with varying severity of liver disease compared to a placebo (lactose pill). Eligible subjects will be randomized to treatment with placebo or one of two dosages of Legalon® 420 mg or 700 mg administered orally thrice daily. Investigators and subjects will be masked to treatment assignment. The study design includes a screening period during which patients will undergo full medical evaluation to verify protocol eligibility and a treatment period of 24 weeks during which time clinic visits and laboratory studies will be performed every 2-4 weeks to monitor for safety and efficacy of therapy. Subjects will continue to be followed for an additional 12 weeks after the completion of study medication to monitor for adverse events and investigate post-treatment outcomes. Participation in this research study requires the subject to travel to the clinic for at least 10 visits so recruitment will be limited to a geographically restricted area around participating clinical centers.
Study identification
- NCT ID
- NCT00680342
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2
- Enrollment
- 154 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Mar 31, 2008
- Primary completion
- Dec 31, 2010
- Completion
- Dec 31, 2010
- Last update posted
- Mar 17, 2013
2008 – 2011
United States locations
- U.S. sites
- 5
- U.S. states
- 3
- U.S. cities
- 4
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Beth Israel Deaconess Medical Center | Boston | Massachusetts | 00215 | — |
| University of North Carolina | Chapel Hill | North Carolina | 27599 | — |
| University of Pennsylvania | Philadelphia | Pennsylvania | 19104 | — |
| Thomas Jefferson University | Philadelphia | Pennsylvania | 19107 | — |
| University of Pittsburgh | Pittsburgh | Pennsylvania | 15213 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00680342, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Mar 17, 2013 · Synced Sep 18, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00680342 live on ClinicalTrials.gov.