Completed

An Open-Label, Parallel Comparison Study to Evaluate the Effect of Oral Administration of Nattokinase Taken by Normal Subjects, Patients Under Dialysis, and Patients of Cardiovascular High Risk Groups

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What is being tested

Data Collection

Who is being recruted

Cardiovascular Diseases+1

+ Thrombosis

+ Vascular Diseases

From 20 to 70 Years
See all eligibility criteria
How is the trial designed

Prevention Study

Phase 4
Interventional
Study Start: June 2005
See protocol details

Summary

Principal SponsorChanghua Christian Hospital
Last updated: January 27, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: June 1, 2005

Actual date on which the first participant was enrolled.

This study will employ an open-label, parallel-group design. Adult men and women who meet the inclusion/exclusion criteria and give written consent to participate will be assigned to one of the three groups according to their condition: Group A- normal volunteers; Group B- patients under dialysis; Group C- patients of cardiovascular high risk group. Each group will enroll 15 subjects. After two to four weeks run-in period, subjects will be given nattokinase orally for 8 weeks, and will be asked to stop taking nattokinase for 2 weeks to evaluate the effect of long-term intake and cease of intake of nattokinase. Laboratory tests, including fibrinogen, T-PA, PAI-1, D-dimer, total cholesterol, LDL-C, HDL-C, and TG, vital signs and body weight will be evaluated at screening visit, 3 days, 1 week, 4 weeks, 8 weeks, and 10 weeks (2 weeks after cease of intake) visits. Patient self-evaluation of tolerance and physical improvement will be assessed by a Patient Questionnaire at 3-day, and 1-, 4-, 8-, and 10-week visits. Each patient will be carefully monitored for the development of any adverse events (AE).

Official TitleAn Open-Label, Parallel Comparison Study to Evaluate the Effect of Oral Administration of Nattokinase Taken by Normal Subjects, Patients Under Dialysis, and Patients of Cardiovascular High Risk Groups
Principal SponsorChanghua Christian Hospital
Last updated: January 27, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

45 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Prevention Study

Prevention studies aim to stop a disease from developing. They often involve people at risk and test things like vaccines, lifestyle changes, or preventive medications.


Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

From 20 to 70 Years

Range of ages for which participants are eligible to join.

Healthy volunteers allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

Cardiovascular DiseasesThrombosisVascular DiseasesEmbolism and Thrombosis

Criteria

Inclusion Criteria: * In order to be enrolled in the study, potential study subjects must meet the following inclusion criteria: 1. Men and non-pregnant women who are at least 20 and younger than 70 years of age. 2. Subjects who are, in the opinion of the Investigator, able to comply with the requirements of the study. 3. 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. Group-specific inclusions criteria: Group A: 1. Subjects have no risk factors of cardiovascular diseases (see Group C) or chronic renal diseases in the history. 2. Male subjects have Creatinine≦1.4 mg/dl; Female≦1.3 mg/dl. Group B: 1\. Patients have been receiving dialysis at the same institute for at least 3 months. Group C: 1. Patients have coronary artery disease (CAD); OR 2. Patients have peripheral arterial occlusive disease (PAOD); OR 3. Patients have history of stroke; OR 4. Patients have history of transient ischemic attack (TIA); OR 5. Patients have history of pulmonary embolism (PE); OR 6. Patients have history of deep vein thrombosis (DVP); OR 7. Patients have more than 2 major risk factors of cardiovascular disease (CVD) listed by National Health Insurance guidelines such as hypertension, smoking, diabetes mellitus (DM), atrial fibrillation (AF), lipid disorder, overweight, physical inactivity, etc. Exclusion Criteria: * In order to be enrolled in the study, potential study patients must not have any of the following exclusion criteria: 1. Known allergies to the component of study product. 2. Current use of warfarin. 3. Patients have active disease status. 4. Patients have acute disease, and in the opinion of investigators, are not suitable to participate in this study. Group-specific exclusion criteria: Group A: 1. Patients have coronary artery disease (CAD). 2. Patients have peripheral arterial occlusive disease (PAOD). 3. Patients have history of stroke. 4. Patients have history of transient ischemic attack (TIA). 5. Patients have history of pulmonary embolism (PE). 6. Patients have history of deep vein thrombosis (DVP). 7. Patients have more than 2 major risk factors of cardiovascular disease (CVD) listed by National Health Insurance guidelines such as hypertension, smoking, diabetes mellitus (DM), atrial fibrillation (AF), lipid disorder, overweight, physical inactivity, etc. 8. Patients have history of chronic renal diseases. 9. Male subjects have Creatinine\>1.4 mg/dl; Female\>1.3 mg/dl.

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Study Objectives

Study Objectives

Primary Objectives

Secondary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 1 location

Suspended

Changhua Christian Hospital

Changhua, TaiwanOpen Changhua Christian Hospital in Google Maps
CompletedOne Study Center