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Comparison of Psyllium and Microcrystalline Cellulose on Glycemic Measures in Subjects With Impaired Fasting Glucose

This study has been completed.
Duke University
Information provided by (Responsible Party):
Procter and Gamble Identifier:
First received: March 6, 2012
Last updated: October 27, 2014
Last verified: April 2014
The Purpose of this study is to compare the effects of 2 types of dietary fiber, psyllium and microcrystalline cellulose (MCC), on glycemic measures in subjects with impaired fasting glucose.

Condition Intervention
Impaired Fasting Glucose
Dietary Supplement: psyllium
Dietary Supplement: Microcrystalline Cellulose

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Single Blind (Investigator)
Primary Purpose: Basic Science
Official Title: A Randomized, Controlled Study To Compare the Effects of 2 Types of Dietary Fiber, Psyllium and Microcrystalline Cellulose, on Glycemic Measures in Subjects With Pre-type 2 Diabetes

Resource links provided by NLM:

Further study details as provided by Procter and Gamble:

Primary Outcome Measures:
  • fasting serum glucose [ Time Frame: 8 weeks ]
    mean change from baseline in fasting serum glucose at 8 weeks

Enrollment: 18
Study Start Date: February 2012
Study Completion Date: May 2013
Primary Completion Date: May 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: psyllium
5.1 g psyllium husk in at least 8 ounces of water
Dietary Supplement: psyllium
1 level tablespoon (~ 5.1 g psyllium husk in the psyllium product) mixed with at least 8 ounces of water, taken twice daily
Active Comparator: Microcrsytalline Cellulose
1.18 g Microcrystalline Cellulose in at least 8 ounces of water, taken twice a day
Dietary Supplement: Microcrystalline Cellulose
1 level tablespoon (~ 1.18 g MCC in the MCC product) mixed with at least 8 ounces of water, taken twice a day

Detailed Description:

This study will be conducted at a single study center. Approximately 40 subjects with pre-type 2 diabetes will be enrolled and randomized in this study.

This 22-week study consists of 3 periods: an 8-week treatment period (Visits 2-4), a 6-week washout period, and an 8-week treatment period (Visits 5-7).


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • be male or female,
  • at least 18 years of age
  • in generally good health for the pre-type 2 diabetes population;
  • if female, be postmenopausal or if of child-bearing capacity agree to use an adequate form of contraception
  • have not used any psyllium containing products within the past 3 months;
  • be willing to refrain from taking any psyllium containing products during the study;
  • be willing to maintain a lifestyle habits for the duration of the study;
  • have a fasting serum glucose of 110 - 125 mg/dL

Exclusion Criteria:

  • if female, are pregnant or nursing (lactating);
  • have a history of diabetes (diagnosis) or is currently taking medications for diabetes
  • participated in a clinical drug study or used investigational drug during the previous 30 days;
  • have symptoms and signs suggestive of significant underlying disease, or acute onset of new symptoms and signs of major organ disease, that could become unstable during the trial requiring urgent medical intervention
  • have evidence of or treatment history of malignancy within the previous 5 years;
  • currently alcohol dependent;
  • used anti-psychotics in the previous 3 months;
  • used systemic steroidal agents within the last 30 days;
  • had used oral or systemic antibiotics or any over-the-counter (OTC) bactericidal medication (eg, bismuth salts) within the last 30 days;
  • has been taking any medication that may affect blood glucose or GI motility (eg, calcium channel blockers, beta blockers, antimuscarinics, salicylates etc.) for less than 30 days or 5 times the half life of the drug (need to be stable on the medication);
  • have evidence of immunodeficiency including subjects currently taking systemic corticosteroids or immunosuppressive drugs
  • have a major psychiatric disorder, including major depression, psychoses, alcohol or substance abuse within the past 2 years;
  • has a known sensitivity or allergy to any components of study products, including psyllium and aspartame (see Section 3.5.3);
  • were previously screened (ie, Visit 1 procedures) for participation in this study and failed to meet entry criteria;
  • have difficulty swallowing
  Contacts and Locations
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Please refer to this study by its identifier: NCT01549600

United States, North Carolina
Duke University Medical Center
Durham, North Carolina, United States, 27710
Sponsors and Collaborators
Procter and Gamble
Duke University
Study Director: John McRorie, PhD Procter and Gamble
Principal Investigator: Mark Feinglos, MD Duke University
Principal Investigator: Richard Surwit, PhD Duke University
  More Information

Responsible Party: Procter and Gamble Identifier: NCT01549600     History of Changes
Other Study ID Numbers: 2011063
Study First Received: March 6, 2012
Last Updated: October 27, 2014

Additional relevant MeSH terms:
Prediabetic State
Diabetes Mellitus
Glucose Metabolism Disorders
Metabolic Diseases
Endocrine System Diseases
Calcium polycarbophil
Gastrointestinal Agents
Antidiarrheals processed this record on April 25, 2017