Peppermint Oil Pharmacokinetics/Dynamics

  • STATUS
    Recruiting
  • End date
    Mar 26, 2023
  • participants needed
    42
  • sponsor
    Baylor College of Medicine
Updated on 26 January 2021
functional abdominal pain
anxiety

Summary

In children 7-12 years of age with functional abdominal pain (n=42) determine:

Aim 1 - To examine and characterize the threshold of the exposure (PK) vs. response (PD) relationship of PMO (menthol)

Aim 2 - PD of PMO as assessed by:

  1. Microbiome composition (16S RNA sequencing)
  2. Transit rate/contractile activity (using the SmartPill) Aim 3 - Evaluate the potential association between PD response and clinical symptoms (abdominal pain and stooling pattern via validated diary), psychosocial distress (anxiety, depression, somatization), and characterize potential side effects (questionnaire)

Description

An initial single-dose PK study will be carried out. Forty-two children (n=21 per dose) will be randomized to receive approximately 10.9 mgkg-1d-1 of PMO or to receive approximately 18.2 mgkg-1d-1 (1.67-fold the median dose).

Following the single-dose PK study, a PD study will be carried out wherein the subjects will receive their assigned dose of PMO for 7 days.

At baseline (before the PK study) and after the PK study (i.e., during the PD study), subjects will keep a pain and stooling diary, collect stool for microbiome analysis, and swallow a SmartPill to measure gut motility and transit time. At baseline only, anxiety, depression, somatization will be measured. During the PD study, any side effects will be recorded.

Details
Condition Pain, Abdominal Pain, Post-Surgical Pain, Pain (Pediatric)
Treatment peppermint oil
Clinical Study IdentifierNCT04497870
SponsorBaylor College of Medicine
Last Modified on26 January 2021

Eligibility

Yes No Not Sure

Inclusion Criteria

Children ages 7-12 years who are able to assent to the procedures
Able to complete the diaries which have been validated for use in this age range
The history and medical evaluation reveal no organic reason for the abdominal pain
The child has abdominal pain that meets the definition of FAP according to pediatric Rome IV
Ability to understand study procedures and to comply with them for the entire length of the study
Childrens' body weights will not vary by more than 10-15 kg (so that dose per kg is comparable within the two dosing groups)

Exclusion Criteria

Past bowel surgery
Documented GI disorders (e.g., Crohn's disease)
A serious chronic medical condition (e.g., diabetes)
A weight and/or height < 2 SD for age
Chronic conditions with GI symptoms (e.g., cystic fibrosis)
Autism spectrum disorder, significant developmental delay, psychosis, depression, or a history of bipolar disorder
Antibiotic/probiotic treatment within 2 mo
Allergy/sensitivity to PMO or its ingredients
Inability to swallow the PMO capsule or the SmartPill
Inability to speak English - testing materials are available only in this language
Unable to discontinue laxative, prokinetic, or neuromodulator from 3 wk prior to Visit 1 through the end of the study
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