Simethicone as Part of ERAS in Bariatric Surgery Patients

Last updated: June 11, 2025
Sponsor: Madigan Army Medical Center
Overall Status: Active - Recruiting

Phase

4

Condition

Weight Loss

Treatment

Placebo

Simethicone 80 MG

Clinical Study ID

NCT06812832
971532
  • Ages 18-89
  • All Genders
  • Accepts Healthy Volunteers

Study Summary

By conducting this study, we hope to assess if simethicone (also known as Gas Relief or GasX) has an effect on improving gas pain and bloating specifically in patients undergoing foregut procedures to include bariatric procedures (sleeve gastrectomy, Roux-en-Y gastric bypass), hiatal hernia, and gastric surgery.

The purpose of this research is to gather information on the safety and effectiveness of simethicone. Simethicone (more commonly known as Gas Relief or Gas-X) relieves pressure, bloating, and fullness commonly referred to as gas. It is FDA approved. The use of this medication in this research study is consistent with labeling indications.

Eligibility Criteria

Inclusion

Inclusion Criteria:

  • Foregut procedures

Exclusion

Exclusion Criteria:

  • Non-foregut procedures

  • Allergy to simethicone

  • Pregnancy or breastfeeding

  • Minors under 18 years of age

Study Design

Total Participants: 260
Treatment Group(s): 2
Primary Treatment: Placebo
Phase: 4
Study Start date:
April 08, 2025
Estimated Completion Date:
March 31, 2029

Study Description

Patient enrollment Prospective participants will be screened prior to their preoperative appointment based on their presenting complaint (diagnosis) and the indicated surgical procedure (foregut operations).

Patients will undergo informed consent by a member of the research team. Patients will complete baseline survey (PROMIS Scale v1.1 - Gastrointestinal Gas and Bloating 13). This is a paper survey that will be provided to them by a member of the research team.

Patient randomization Patients will be randomized into simethicone vs placebo groups via unrestricted randomization The research pharmacist and DCI statistician will be the only individuals who know if a patient is in the experimental (simethicone) group or the control (placebo) group.

Patients will undergo their surgical procedure Postoperatively, all patients will be ordered to receive either simethicone at 80mg or placebo prepared by research pharmacist based on randomziation scheme four times per day. The research pharmacist will have the appropriate patient randomization via MRN or FIN and will provide either simethicone or placebo.

24 hours postoperatively, patients will recomplete the PROMIS Scale v1.1 - Gastrointestinal Gas and Bloating 13a for comparison as well as complete the APS Patient Outcome Questionnaire (APS-POQ-R) survey. Both of these are paper surveys that will be provided to them.

If patients are admitted for greater than 1 night, they will complete the surveys every 24 hours until discharge. These are paper surveys that will be provided to them.

Patients will be discharged with simethicone for a total of a 14 day course (to include their inpatient doses, 56 doses total) until their follow up appointment. Patients assigned to the placebo group will receive placebo (56 doses). The total number of doses any patient will receive, regardless of the length of their inpatient stay, is 56 doses. This is the number of doses total for a 14 day course when taking the medication four times per day.

At their standard postoperatively follow up visit, patients will re-complete their (PROMIS Scale v1.1 - Gastrointestinal Gas and Bloating 13a). They will also complete a compliance survey. These are both paper surveys that will be provided to them.

Data will be collected into master data sheet and data will then be de-identified with pseudo-ID assigned according to the Master Key spreadsheet. The randomization spreadsheet will only be accessed by the research pharmacist and the DCI statistician.

The master key will be kept under CAC-enabled protection The de-identified data will then be collated and analyzed Data will then be reported and submitted for relevant conferences The entirety of this project will take 4 years following IRB approval, 3 years for enrollment, perhaps an additional 1 year of data collection/analysis.

Connect with a study center

  • Madigan Army Medical Center

    Tacoma, Washington 98431
    United States

    Active - Recruiting

Map preview placeholder

Not the study for you?

Let us help you find the best match. Sign up as a volunteer and receive email notifications when clinical trials are posted in the medical category of interest to you.