The Efficacy of White Kidney Bean on Oral Glucose Tolerance Test

Study Overview
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Brief Summary
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The goal of this randomized, double-blind, cross-over inverventional study is to evaluate the efficacy of white kidney bean on OGTT (oral glucose tolerance test). About 34 eligible participants will be randomized in two groups of the same size to take the assigned interventions at one study site in Shanghai, two visits will be required. The first group of participants will take Wonderlab product first and then placebo product after 72 hours of washout period, while the other group of of participants will take placebo product first and then Wonderlab product after 72 hours of washout period. For each visit, the finger blood will be sampled and the relevent data such as blood glucose will be captured based on OGTT procedures, and recorded into clinical data management system for statistical analysis. Researchers will compare the two groups to see if there is significant change of blood glucose by using products containing ingredient of white kidney beans.

Official Title
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A Randomized, Double-blind, Cross-over Clinical Trial of the Efficacy of White Kidney Bean on Oral Glucose Tolerance Test

Conditions
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Diabetes, Sugar; Blood, High

Intervention / Treatment
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* Dietary Supplement: Phase 1 Wonderlab Product
* Dietary Supplement: Phase 1 Placebo
* Dietary Supplement: Phase 2 Placebo
* Dietary Supplement: Phase 2 Wonderlab Product


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Healthy adults aged 25-45 years, with a male to female ratio of more than 40% and BMI 24. 35 subjects enrolled and 30 subjects completed the study; There is no history of diabetes and other metabolic syndrome, digestive diseases, endocrine disorder and mental diseases; No history of food allergy and intolerance; No nutritional supplements that affect glucose tolerance, oral contraceptives, acetylsalicylic acid, steroids, protease inhibitors, and antipsychotic drugs in the past 3 months; Able to tolerate at least 10 hours of fasting; Willing to refrain from participating in other interventional clinical studies during the trial period; Be able to fully understand the purpose, benefits and potential risks including side effects of the research; Willing to obey all test requirements and procedures; Informed consent signed. Exclusion Criteria: Subject who is in the treatment of gastrointestinal diseases; Subjects are currently suffering from other organic diseases that affect intestinal function, such as history of gastrointestinal resection, colonic or rectal cancer, inflammatory bowel disease, diabetes, hyperthyroidism or hypothyroidism, Hirschsprung's disease, scleroderma, anorexia nervosa, etc.; Controlling diet, exercising, or taking medications to control weight or affect appetite in the last 3 months; Subjects have any of the following medical history or have been clinically examined to have the following diseases that may affect the evaluation of the test effect: obvious gastrointestinal dysfunction, liver, kidney, endocrine, blood, respiratory and cardiovascular diseases; Abuse alcohol or other drugs, supplement or OTC drugs currently or n the past may cause bowel dysfunction or can affect test result evaluation; Frequently use of medications that may affect gastrointestinal function or the immune system according to investigator's judgment; Take laxatives or other substances that promote digestion 2 weeks before the trail start; Pregnant or lactating women or those planning to become pregnant during the trial; Liver function tests (alanine aminotransferase and aspartate aminotransferase), renal function tests (blood urea nitrogen and creatinine), routine blood tests, urinalysis, fecal occult blood test or electrocardiogram abnormalities.

Ages Eligible for Study
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Minimum Age: 25 Years
Maximum Age: 45 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Supportive Care
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Wonderlab Product plus Placebo<br>Wonderlab product: White Kidney Bean Pressed Candy, 4g/tablet, per serving 750mg extracts of the white kidney bean. Placebo: 4g/tablet, per serving 750mg Maltodextrin | Dietary Supplement: Phase 1 Wonderlab Product<br>* Chew two tablets of Wonderlab Product for phase 1 (day 1)<br>Dietary Supplement: Phase 1 Placebo<br>* Washout 72 hours and chew two tablets of placebo for phase 2 (day 4).<br>|
| Active Comparator: Placebo plus Wonderlab Product<br>Placebo: 4g/tablet, per serving 750mg Maltodextrin Wonderlab product: White Kidney Bean Pressed Candy, 4g/tablet, per serving 750mg extracts of the white kidney bean. | Dietary Supplement: Phase 2 Placebo<br>* Chew two tablets of placebo for phase 1 (day 1)<br>Dietary Supplement: Phase 2 Wonderlab Product<br>* Washout 72 hours and chew two tablets of Wonderlab Product for phase 2 (day 4).<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The Change of Blood Glucose Level in mmol/L based on OGTT (Oral Glucose Tolerance Test) after Intervention | The Change of Blood Glucose Level in mmol/L based on OGTT (Oral Glucose Tolerance Test) after intervention: Chewing Wonderlab Product - White Kidney Bean Pressed Candy, followed by Placebo Product at the interval of washout duration of 72 hours; and Chewing Placebo Product, followed by Wonderlab Product - White Kidney Bean Pressed Candy at the interval of washout duration of 72 hours. | At the end of Phase 1 and Phase 2 (each phase is 1 day) | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The Change of Fast Blood Glucose Level in mmol/L based on OGTT (Oral Glucose Tolerance Test) after Intervention | The Change of Fast Blood Glucose Level in mmol/L based on OGTT (Oral Glucose Tolerance Test) after intervention: Chewing Wonderlab Product - White Kidney Bean Pressed Candy, followed by Placebo Product at the interval of washout duration of 72 hours; and Chewing Placebo Product, followed by Wonderlab Product - White Kidney Bean Pressed Candy at the interval of washout duration of 72 hours. | At the end of Phase 1 and Phase 2 (each phase is 1 day) | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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White Kidney Bean, Oral Glucose Tolerance Test