title: A prospective, randomized, double-blind, placebo-controlled parallel-group dual site trial to evaluate the effects of a Bacillus coagulans-based product on functional intestinal gas symptoms.
abstract: BACKGROUND
  This randomized double blind placebo controlled dual site clinical trial compared a probiotic dietary supplement to placebo regarding effects on gastrointestinal symptoms in adults with post-prandial intestinal gas-related symptoms (abdominal pain, distention, flatulence) but no gastrointestinal (GI) diagnoses to explain the symptoms.
  
  
  METHODS
  Sixty-one adults were enrolled (age 36.5 +/- 12.6 years; height 165.1 +/- 9.2 cm; weight 75.4 +/- 17.3 kg) and randomized to either Digestive Advantage Gas Defense Formula - (GanedenBC30 Bacillus coagulans GBI-30, 6086): n = 30; or Placebo: n = 31. Study subjects were evaluated every two weeks over a four-week period using validated questionnaires and standard biochemical safety testing. Outcome criteria of interest included change from baseline in Gastrointestinal Symptom Rating Scale (GSRS) abdominal pain, abdominal distention, flatus, and the Severity of Dyspepsia Assessment (SODA) bloating and gas subscores over four weeks of product use.
  
  
  RESULTS
  Measured against the placebo, subjects in the probiotic group achieved significant improvements in GSRS abdominal pain subscore (p = 0.046) and the GSRS total score (p = 0.048), with a strong trend for improvement on the GSRS abdominal distension subscore (p = 0.061). A strong placebo effect was evident which could explain the lack of statistical significant differences between the groups for many of the efficacy variables.
  
  
  CONCLUSIONS
  In conclusion, the Bacillus coagulans-based product was effective in improving the quality of life and reducing gastrointestinal symptoms in adults with post prandial intestinal gas-related symptoms and no GI diagnoses.
  
  
  BACKGROUND
  ClinicalTrials.gov Identifier: NCT00881322.
authors.affiliation: Miami Research Associates, South Miami, Florida 33143, USA. dkalman@miamiresearch.com
authors.forename: Douglas S
authors.initials: DS
authors.lastname: Kalman
authors.forename: Howard I
authors.initials: HI
authors.lastname: Schwartz
authors.forename: Patricia
authors.initials: P
authors.lastname: Alvarez
authors.forename: Samantha
authors.initials: S
authors.lastname: Feldman
authors.forename: John C
authors.initials: JC
authors.lastname: Pezzullo
authors.forename: Diane R
authors.initials: DR
authors.lastname: Krieger
mesh_terms: D015746:Abdominal Pain / Q000628:therapy*; D000328:Adult; D000368:Aged; D001407:Bacillus; D004311:Double-Blind Method; D005260:Female; D005414:Flatulence / Q000628:therapy*; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D019936:Probiotics / Q000627:therapeutic use*; D011446:Prospective Studies; D011788:Quality of Life; D011795:Surveys and Questionnaires; D016896:Treatment Outcome; D055815:Young Adult