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CompletedNCT01757054LGG BB-12Updated Oct 30, 2013

Fecal Recovery of the Probiotic Bacteria Lactobacillus Rhamnosus GG (LGG) and Bifidobacterium Animalis Subspecies Lactis BB-12 (BB-12) in Healthy Humans Following Daily Consumption of a Probiotic Supplement

A Phase 4 interventional study of ProNutrients Probiotic in Fecal Analysis, sponsored by Pfizer. Completed at 1 site in United States. Open to participants aged 18 Years to 70 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2013-10-30.

Sponsored by Pfizer · Phase 4 and Interventional

Phase
Phase 4
Study type
Interventional
Enrollment
27
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Study summary

The main hypothesis of this study is that there will be a significant increase of Lactobacillus rhamnosus GG (LGG) and Bifidobacterium lactis (BB-12) in the stool of healthy humans following daily consumption of a probiotic supplement containing these specific strains of probiotic bacteria.

Read the detailed description

To demonstrate recovery of live probiotic bacteria in the stool.

02

Conditions studied

  • Fecal Analysis

Keywords

  • probiotic
  • LGG
  • BB-12
  • fecal recovery
  • healthy subjects
03

In context

Lead sponsor

Pfizer is the lead sponsor of 3,244 studies on the registry; 139 are open to participants now.

Of its 582 completed or terminated interventional studies of FDA-regulated products, 381 (65%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

Are between 18-70 years of age. Have regular bowel movements. Are willing and able to attend study visits, undergo limited blood and urine testing, take the nutritional supplement according to the instructions provided.

Are willing to collect four stool specimens and bring them to the study site.

Exclusion criteria

Exclusion Criteria:

Are unwilling to follow the dietary guidelines of the study. Are lactose-intolerant or have allergies to milk or wheat. Have had drug or alcohol problems within the previous year. Are or plan to become pregnant over the next 3 months.

05

Study design

Phase
Phase 4
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
27 participants (actual)

Study arms

  • Experimental
    Probiotic group

    Dietary Supplement: ProNutrients Probiotic

  • No intervention
    Control group

    This is a non-supplemented control group that will follow the same dietary and medication restrictions. The purpose of this group is to ensure results are due to supplementation and not due to random dietary exposure.

Interventions

  • Dietary supplementProNutrients Probiotic

    Dosage is 1 individually wrapped packet (1 gram) containing probiotic powder per day for 21 days

06

What researchers measure

Primary outcomes

  1. Change in fecal concentration of both LGG and BB-12 by quantitative culture with confirmatory PCR at baseline and 3 weeks

    Pre- to post-supplementation changes in fecal concentration of both LGG and BB-12 by quantitative culture with confirmatory PCR

    Time frame: Baseline, 3 weeks

Secondary outcomes

  1. Change in fecal concentration of both LGG and BB-12 by quantitative culture with confirmatory PCR at baseline and 2 weeks

    Pre- to post-supplementation changes in fecal concentration of both LGG and BB-12 by quantitative culture with confirmatory PCR

    Time frame: Baseline, 2 weeks

  2. Change in fecal concentration of both LGG and BB-12 by quantitative PCR (qPCR) at baseline and 3 weeks

    Pre- to post-supplementation changes in fecal concentration of both LGG and BB-12 by quantitative PCR (qPCR)

    Time frame: Baseline, 3 weeks

  3. Change in fecal concentration of both LGG and BB-12 by quantitative PCR (qPCR) at baseline and 2 weeks

    Pre- to post-supplementation changes in fecal concentration of both LGG and BB-12 by quantitative PCR (qPCR)

    Time frame: Baseline, 2 weeks

  4. Change in fecal concentration of both LGG and BB-12 by quantitative culture with confirmatory PCR and qPCR in probiotic compared to control group at baseline and 3 weeks

    Pre- to post-supplementation changes in fecal concentration of both LGG and BB-12 by quantitative culture with confirmatory PCR and qPCR in probiotic compared to control group

    Time frame: Baseline, 3 weeks

  5. Change in fecal concentration of both LGG and BB-12 by quantitative culture with confirmatory PCR and qPCR in probiotic compared to control group at baseline and 2 weeks

    Pre- to post-supplementation changes in fecal concentration of both LGG and BB-12 by quantitative culture with confirmatory PCR and qPCR in probiotic compared to control group

    Time frame: Baseline, 2 weeks

  6. Change in fecal concentration of LGG and BB-12 by both quantitative culture with confirmatory PCR and qPCR at baseline, 3 weeks, and 28 days post supplementation

    Post-supplementation fecal concentration of LGG and BB-12 by both quantitative culture with confirmatory PCR and qPCR compared to baseline and 3 week supplementation values

    Time frame: Baseline, 3 weeks, 28 days follow up

07

Study locations

1 site
  • Pfizer Investigational Site
    Boston, Massachusetts 02111, United States
08

References and documents

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 30, 2013, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01757054
Lead sponsor
Pfizer
Responsible party
Sponsor
First posted
Dec 28, 2012
Start date
Feb 2013
Primary completion
Oct 2013
Completion
Oct 2013
Last update
Oct 30, 2013

Study contacts

Pfizer CT.gov Call Center
study director · Pfizer

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2013. You cannot join it, but the record below documents what was studied.

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