After undergoing a 5-7 day Linzess washout period, patients will record their bowel habits in a daily diary for 2 weeks. Patients will have the HygiRelief procedure with a HygiSample evaluation, then they will record their bowel habits in a daily diary for 2 weeks following the HygiRelief procedure.~HygiSamples (stool samples) will be collected throughout the HygiRelief procedure and the samples will be sent for microbiome evaluation.~Patients will complete multiple questionnaires - Happiness Scale, Hospital Anxiety and Depression Scale (HADS), and a personal assessment which includes the Constipation Symptom Score and Adverse Event Screening. These will be completed at Baseline, after the 2 week PRE-HygiRelief period, and after the 2 week POST-HygiRelief period.
This study has a single center, prospective, open label design. The population will include patients diagnosed with Rome IV Functional Constipation who are at the time of study enrollment being managed with a stable dose of Linzess. They will stop taking their Linzess, undergo monitoring of bowel habits for 2 weeks, have a HygiRelief procedure and then undergo an additional 2 weeks of bowel habit monitoring.