Randomized Placebo-controlled Trial Evaluating the Safety and Efficacy of Silymarin Treatment in Patients With Acute Viral Hepatitis

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00755950
Recruitment Status : Terminated (Low enrollment)
First Posted : September 19, 2008
Last Update Posted : June 9, 2016
The Egyptian Company for Blood Transfusion Services
Tanta Fever Hospital
Banha Fever Hospital
Alexandria University
Information provided by (Responsible Party):
Samer S. El-Kamary, University of Maryland

Brief Summary:
The purpose of this study is to assess whether two higher doses (280mg or 420mg three times daily)of silymarin therapy are safe and tolerable, and shorten the illness in patients with acute viral hepatitis compared to placebo.

Condition or disease Intervention/treatment Phase
Acute Hepatitis A Acute Hepatitis B Acute Hepatitis C Acute Hepatitis E Acute EBV Hepatitis Acute CMV Hepatitis Dietary Supplement: Silymarin Other: Lactose monohydrate Phase 2 Phase 3

Detailed Description:

Currently, acute viral hepatitis (AVH) management is based on diet and rest and silymarin remains among the most popular herbs being used for treating viral hepatitis both in the U.S. and abroad. Although numerous randomized clinical trials have been conducted to assess the efficacy of silymarin on chronic hepatitis C, very few studies were done to assess the efficacy of silymarin in acute viral hepatitis. Among those, efficacy of silymarin has not been established. This could be attributed to the small number of studies conducted, small sample sizes, high drop out rates, and low doses of silymarin used. Therefore, it is justified to evaluate silymarin safety and efficacy using higher doses than previously studied in AVH.

Primary safety objective:

  • To assess safety and tolerability of two silymarin doses in patients with AVH as determined by the number and percentage of subjects who develop Adverse Events in each group elicited by a questionnaire administered at specific visits and by hematology, blood chemistry and physical examinations.

Primary efficacy objective:

  • To assess the percentage of subjects who normalize their total and direct bilirubin in each group.

Secondary Objective:

To assess the percentage of subjects in each group who:

  • Normalize their liver enzymes, i.e. alanine aminotransferase (ALT), aspartate aminotransferase (AST) and inflammatory reactants, i.e. erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP).
  • Resolve their clinical symptoms of AVH and return to baseline activity levels and quality of life (QOL) assessed by physical examinations and using a previously evaluated Arabic-translated SF-36 form adapted for use with patients with liver diseases.

To assess:

  • Differences in silymarin response in different AVH etiologies (i.e. HAV, HBV, HCV, HEV) using subgroup analyses.

To compare:

  • Progression of acute to chronic HCV infection in subjects with HCV-caused acute AVH.

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 70 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Supportive Care
Official Title: A Multicentre, Double-blind, Randomized, Placebo-controlled, Phase II/III Study to Evaluate the Safety and Efficacy of 280 mg and 420 mg Silymarin TID (Legalon® Capsules) Administered for Four Weeks in Subjects With Acute Viral Hepatitis With a Four Week Follow-up Period
Study Start Date : October 2008
Actual Primary Completion Date : November 2011
Actual Study Completion Date : December 2015

Resource links provided by the National Library of Medicine

Drug Information available for: Silymarin

Arm Intervention/treatment
Experimental: 1
280 mg of Silymarin administered three times daily for 4 weeks; Vitamin B complex: B1:thiamine (1.3mg), B2:riboflavin (1.0mg) and B3: nicotinamide (16.5mg)
Dietary Supplement: Silymarin
280 mg three times daily for four weeks
Other Name: Legalon, Milk Thistle or St. Mary's Thistle

Placebo Comparator: 3
Placebo: Lactose monohydrate; Vitamin B complex: B1:thiamine (1.3mg), B2:riboflavin (1.0mg) and B3: nicotinamide (16.5mg)
Other: Lactose monohydrate
Lactose monohydrate 326.95 mg three times daily for four weeks

Experimental: 2.
420 mg silymarin three times daily for four weeks; Vitamin B complex: B1:thiamine (1.3mg), B2:riboflavin (1.0mg) and B3: nicotinamide (16.5mg)
Dietary Supplement: Silymarin
420 mg three times daily for four weeks
Other Name: Legalon, Milk Thistle or St. Mary's Thistle

Primary Outcome Measures :
  1. Incidence, severity and duration of Adverse Events [ Time Frame: Four weeks after enrollment ]
  2. Normalization of total (<1.0 mg/dl) and direct bilirubin (<0.3 mg/dl) [ Time Frame: Four weeks after enrollment ]

Secondary Outcome Measures :
  1. Normalization of ALT, AST, CRP and ESR [ Time Frame: Four weeks after enrollment ]
  2. Symptom resolution & return to normal physical activity [ Time Frame: Eight weeks after enrollment ]
  3. In AVH patients with specific etiologies resolution of clinical signs and symptoms [ Time Frame: Eight weeks after enrollment ]
  4. Persistence of acute HCV with progression to chronicity [ Time Frame: Up to 6 months after enrollment ]

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Diagnosis of acute viral hepatitis (<1 month) as manifested by a combination of the following symptoms: jaundice, dark-colored urine, light-colored stools, pruritus, pruritic red hives, fever, nausea, vomiting, anorexia, aversion to smoking and right upper abdominal discomfort, pain or feeling of pressure.
  • Serum ALT level > 2.5 times the upper limit of normal.
  • Albumin level >3.5 gm/dl
  • Negative anti-HCV antibody
  • Males and females >= 18 years of age.
  • Subject has given written informed consent. If patient is between 18 and 21 years parents/legal guardian have/has also signed the informed consent form.
  • The subject is able and willing to undertake all study-required procedures and has the ability to take oral medications.

Exclusion Criteria:

  • Subjects < 18 years of age
  • Pregnant or breastfeeding women
  • Suspected hypersensitivity to silymarin or multivitamins
  • Advanced liver disease (e.g. ascites, bleeding esophageal varices and hepatic encephalopathy)
  • Chronic liver disease as cirrhosis
  • Subjects with positive anti-HCV antibody
  • Simultaneous elevation of bilirubin > 10 mg/dl along with an ALT level between 100 and 150 U/L
  • Platelets count <150,000
  • Subjects with morbid obesity i.e. a Body Mass Index (BMI) > 40
  • Subjects with severe illness, e.g., multisystem failure, cancer or poorly controlled diabetes i.e. known diabetic with Hemoglobin A1C (HbA1C)>7%
  • Obvious history of drug-induced acute hepatitis. A careful history of all medications, pesticide and other hepatotoxic exposures occurring within one month prior to symptom onset will be taken. If a patient is unaware of the name of the drugs, (s)he will be asked to bring it for inspection.
  • Current use of Silymarin or recent use within past two weeks.
  • Other conditions, which in the opinion of the investigators, makes the patient unsuitable for enrollment or could interfere with his/her participation in, and completion of, the protocol (e.g. severe mental illness)
  • The subject is currently participating in any clinical trial (marketed product or otherwise), or has done so within 30 days or 5 half-lives (whichever is longer) prior to screening visit
  • History or current drug or alcohol abuse
  • Female patient with childbearing potential without negative pregnancy test
  • Patient is known to be HIV positive.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00755950

Alexandria University Hospital
Alexandria, Alexandria Governorate, Egypt
Tanta Fever Hospital
Tanta, Gharbeya Governorate, Egypt
Banha Fever Hospital
Benha, Kaluobeya Governorate, Egypt
Sponsors and Collaborators
University of Maryland
The Egyptian Company for Blood Transfusion Services
Tanta Fever Hospital
Banha Fever Hospital
Alexandria University
Principal Investigator: Samer El-Kamary, MD, MPH University of Maryland
Study Chair: George T Strickland, MD, PhD, University of Maryland
Study Director: Mohamed Hashem, MD University of Maryland

Responsible Party: Samer S. El-Kamary, Assistant Professor, University of Maryland Identifier: NCT00755950     History of Changes
Other Study ID Numbers: HP-00042363
First Posted: September 19, 2008    Key Record Dates
Last Update Posted: June 9, 2016
Last Verified: June 2016

Keywords provided by Samer S. El-Kamary, University of Maryland:
Global Health

Additional relevant MeSH terms:
Hepatitis A
Hepatitis C
Hepatitis B
Hepatitis E
Liver Diseases
Digestive System Diseases
Hepatitis, Viral, Human
Virus Diseases
Enterovirus Infections
Picornaviridae Infections
RNA Virus Infections
Flaviviridae Infections
Hepadnaviridae Infections
DNA Virus Infections
Vitamin B Complex
Molecular Mechanisms of Pharmacological Action
Protective Agents
Physiological Effects of Drugs
Growth Substances