Efficacy and Safety of Geneferm Nattokinase

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: NCT00749801
Recruitment Status : Completed
First Posted : September 9, 2008
Last Update Posted : September 9, 2008
GeneFerm Biotechnology Co., Ltd.
Information provided by:
Chi Mei Medical Hospital

September 8, 2008
September 9, 2008
September 9, 2008
May 2007
March 2008   (Final data collection date for primary outcome measure)
Fibrinogen, FDP (fibrin degradation product), D-dimer, Total cholesterol, LDL-C (Low-density lipoprotein cholesterol), HDL-C (High-density lipoprotein cholesterol), Triglyceride (TG), and Uric acid [ Time Frame: screening, day 0, weeks 4, 13, 26 ]
Same as current
No Changes Posted
Vital signs and self-evaluated questionnaire [ Time Frame: screening, day 0, weeks 4, 13, 26 ]
Same as current
Not Provided
Not Provided
Efficacy and Safety of Geneferm Nattokinase
A Randomized, Double-Blind, Placebo-Controlled, Parallel Comparison Study to Evaluate the Efficacy and Safety of Oral Administration of Nattokinase (From GeneFerm Biotechnology Co., Ltd.) Taken by Dyslipidemia Patients
Nattokinase, first found by Dr. Hiroyuki Sumi in 1980, is a potent fibrinolytic enzyme extracted from Natto, a popular soybean fermented food in Japan. It was confirmed that oral administration of nattokinase (or natto) produced a mild and frequent enhancement of the fibrinolytic activity in the plasma as indicated by the fibrinolytic parameters and the production of tissue plasminogen activator. Other studies also showed a reduction in lipid peroxidation and improvement of lipid metabolism. Short-term effect (less then 10 days) of oral administration of nattokinase on both animal and human subjects has been studied and reported. However, whether nattokinase possesses a beneficial effect to dyslipidemic patients remains unclear. The aim of this study is to investigate the long-term effect (six month) of the mono and multiple formulae of nattokinase, change of BP, lipid and fibrinolytic factors from baseline and 6 months on dyslipidemic patients.

This study will employ a randomized, double-blind, placebo-controlled, parallel-group design. Adult men and women who met the inclusion/exclusion criteria and gave consent to participate were randomly assigned to one of the three groups: Group A: nattokinase-mono formula (18 subjects); Group B: nattokinase compound (multiple formulae) (18 subjects); Group C: placebo (10 subjects).

Laboratory tests, including TG, total cholesterol, LDL-C, HDL-C, fibrinogen, D-Dimer, uric acid, vital signs and body weight will be evaluated at screening visit, 1 month, 3 months, 6 months visits after the initiation of treatment. Vital signs and body weight will be measured at every visits.

Patient self-evaluation of tolerance and physical improvement will be assessed by a Patient Questionnaire at each visit. Each patient will be carefully monitored for the development of any adverse events (AE).

The change of all lab tests and vital signs will be plotted and compared against time. Wilcoxon Signed-Rank test will be performed to compare the baseline and 6 months after the initiation of administration. Change from baseline for all lab and vital evaluations will be compared among three groups by Analysis of Variance (ANOVA) followed by LSD multiple comparison.

Not Applicable
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Supportive Care
Drug: Nattokinase
2 capsules in the morning and before bed-time daily
Other Names:
  • nattokinase-mono formula (3500FU)
  • Nattokinase compound-multiple formulae
  • Placebo
  • Active Comparator: A
    nattokinase-mono formula (3500FU)
    Intervention: Drug: Nattokinase
  • Experimental: B
    Nattokinase compound-multiple formulae
    Intervention: Drug: Nattokinase
  • Placebo Comparator: C
    Intervention: Drug: Nattokinase
Yang NC, Chou CW, Chen CY, Hwang KL, Yang YC. Combined nattokinase with red yeast rice but not nattokinase alone has potent effects on blood lipids in human subjects with hyperlipidemia. Asia Pac J Clin Nutr. 2009;18(3):310-7.

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Same as current
April 2008
March 2008   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  1. Men and non-pregnant women above 40 years of age.
  2. Dyslipidemic currently being untreated with lipid-lowering drugs. Dyslipidemia is defined as: Total cholesterol 200~300 mg/dl; or Triglyceride 200~500 mg/dl; or Low density lipoprotein-cholesterol 130~200 mg/dl; or High density lipoprotein cholesterol <40 mg/dl (male) and <50 mg/dl (female).
  3. Subjects who are, in the opinion of the Investigator, able to comply with the requirements of the study.
  4. Subjects who have been adequately informed of the nature and risks of the study and who have given written informed consent prior to receiving investigational product.

Exclusion Criteria:

  1. Receipt of lipid-lowering drugs or device within 12 weeks.
  2. Myocardial infarction within the preceding 12 weeks.
  3. Recent major trauma (within 12 weeks).
  4. Recent surgery requiring anesthesia including coronary artery bypass graft (within 12 weeks).
  5. Recent hospitalization (within 12 weeks).
  6. Acute infection requiring current antibiotic therapy.
  7. Recent or abrupt change (within 1 month) in usual diet.
  8. Unstable medical condition or life expectancy less than 6 months.
  9. Known allergies to the component of study product.
  10. Patients have acute disease, and in the opinion of investigators, are not suitable to participate in this study.
  11. Total cholesterol >300 mg/dl; or Triglyceride >500 mg/dl; or Low density lipoprotein-cholesterol >200 mg/dl.
  12. Current use of warfarin.
Sexes Eligible for Study: All
40 Years and older   (Adult, Senior)
Contact information is only displayed when the study is recruiting subjects
Not Provided
Not Provided
Nae-Cherng Yang, Chungchou Institute of Technology, Changhua, Taiwan
Chi Mei Medical Hospital
GeneFerm Biotechnology Co., Ltd.
Study Chair: Nae-Cherng Yang, PhD Chung Chou Institute of Technology
Chi Mei Medical Hospital
September 2008

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP