Peppermint Oil as a Treatment for Children With Bladder and Bowel Dysfunction

The goal of this clinical trial is to study the effect of peppermint oil in in children with bladder and bowel dysfunction. The main question it aims to answer is: Does peppermint oil improve symptoms of bladder and bowel dysfunction among children? Participants will: * Be provided peppermint oil capsules to be taken 3 times daily for 8 weeks. * At baseline and at a follow-up visit (8 weeks later), participants will be asked to complete the Vancouver Nonneurogenic Lower Urinary Tract Dysfunction/Dysfunctional Elimination Syndrome Questionnaire. Researchers will compare baseline and follow-up questionnaire data for each participant to determine if there is improvement in symptoms of bladder and bowel dysfunction.