Metabolic and Therapeutic Effects of American and Korean Red Ginseng in the Treatment of Type 2 Diabetes

July 30, 2015 updated by: Unity Health Toronto

Long Term Metabolic and Therapeutic Effects of Combined Treatment of American Ginseng (Panax Quinquefolius L.) Extract and Korean Red Ginseng (Steamed Panax C.A. Meyer) Extract in the Treatment of Type 2 Diabetes

The study is a 2 phase double blind randomized placebo control trial. The objective is to asses the metabolic and therapeutic effects of American Ginseng (Panax quinquefolius L.) extract and Korean Red Ginseng (steamed Panax C.A. Meyer) extract in the management of type 2 diabetes in a 12 week period. One Hundred and twenty subjects with type 2 diabetes (hyperglycemia key inclusion criteria: HbAlc≥6.5% - ≤ 8.1% ) will participate in the study (36 men and 36 post-menopausal women).

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Unknown

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
120

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Canada
    • Ontario
      • Toronto, Ontario, Canada, M5C 1N8
        • Clinical Nutrition and Risk Factor Modification Centre

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

36 years to 71 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • presence of type 2 diabetes (at least 1 year) as defined by A1c between ≥6.5% and ≤8.1%, at recruitment,
  • treatment with diet or oral hypoglycemic medication be unchanged starting at least 2 months prior to the beginning of the study (at recruitment, week -8)
  • between the age of 40 and 75 years
  • systolic blood pressure <140 and diastolic blood pressure <90
  • clinically euthyroid (measuring T3 and T4)
  • normal renal and liver functions
  • post-menopausal or non-pregnant women (Post-menopausal includes: those females with more than a year of cessation of menstruation)
  • a negative result on a pregnancy test administered at screening
  • subjects taking an effective form of birth control (example: condom, abstinence, etc.)
  • willing to comply with the study protocol and sign a consent form

Exclusion Criteria:

  • individuals with bleeding disorders
  • individuals with allergies to nitroglycerin
  • planned surgery, pregnancy or breastfeeding
  • taking insulin; clinically significant diabetes complications (retinopathy, nephropathy, or neuropathy); serum triglycerides ≥ 4.5 mmol/L
  • increased A1c level of more than 2% from baseline during the study
  • history of angina or heart attack
  • use of ginseng or any natural health products with glucose modulating and/or anti-platelet activity within 2 months
  • BMI > 35 kg/m2 including a weight fluctuation of + 2kg during treatment periods
  • smoke cigarettes; alcohol intake > 2 drinks/day
  • the presence of any conditions which, in the opinion of the investigator, might jeopardize the health and safety of the subject or study personnel or adversely affect the study results, if the subject participated in the study
  • Subjects taking Warfarin or Coumadin, prescription NSAIDs, chronic use of high-dose (>81mg) non-prescription NSAIDs, or selective serotonin reuptake inhibitors and monoamine oxidase inhibitors, or sympathomimetics or medications affecting nitric oxide levels, or any known or suspected sensitivity to any of the ingredients in the test product or placebo cannot participate in the study.

Study Plan

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

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: 1
American Ginseng and American Red Ginseng Capsules
Dietary supplement: American Ginseng (Panax quinquefolius L.) and Korean Red Ginseng (steamed Panax C.A. Meyer)
1.5 grams American Ginseng and 1.5 grams Korean Red Ginseng are to be taken in capsulated form. Two capsules are taken with every meal, for a total of 6 capsules per day for 12 weeks
Experimental: 2
American Ginseng Capsules
Dietary supplement: American Ginseng (Panax quinquefolius L.)
3 grams of American Ginseng is to be taken in capsulated form. Two capsules are taken with every meal, for a total of 6 capsules per day for 12 weeks
Placebo Comparator: 3
Placebo Capsules
Dietary supplement: Wheat Bran
3 grams of Wheat Bran is to be taken in capsulated form. Two capsules are taken with every meal, for a total of 6 capsules per day for 12 weeks

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
HbA1c levels and insulin sensitivity index using 3 different indices: ISI, HOMA, QUICKI
Time Frame: Weeks -4, 0, 6, 12
Weeks -4, 0, 6, 12

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
Cholesterol, triglycerides, fasting & post-prandial blood glucose and insulin, C-reactive protein, lipid peroxidation, blood pressure, endothelial function, body fat composition
Time Frame: Weeks -4, 0, 6, 12
Weeks -4, 0, 6, 12

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Unity Health Toronto

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Canadian Diabetes Association

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Vladimir Vuksan, PhD, Clinical Nutritian and Risk Factor Modification Centre
  • Principal Investigator: Alexandra Jenkins, PhD, Clinical Nutrition and Risk Factor Modificatrion Centre
  • Principal Investigator: Lawerence Leiter, MD, St. Michaels Hospital
  • Principal Investigator: Leanne De Souza, M.Sc., Clinical Nutrition and Risk Factor Modificatrion Centre

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
September 1, 2008

Primary Completion (Anticipated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
August 1, 2015

Study Completion (Anticipated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
August 1, 2015

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
August 1, 2008

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 4, 2008

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 5, 2008

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
July 31, 2015

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 30, 2015

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2015

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 122380

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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