Effect of Lecithin-based Curcuma and Boswellia on Post-acute COVID-19 IBS

Inclusion Criteria: * Age: 18-75 years, male or female. * Diagnosis of post-acute COVID-19 irritable bowel syndrome (PCIBS) 60-120 days after the end of infection. * Diagnosis of irritable bowel syndrome (IBS) without prior COVID-19 infection. * Evidence of functional abdominal bloating/distention (FAB/D) type of IBS according to Mearin et al. * Presence of enteral dysbiosis defined by increased urinary indican values with normal skatole urinary concentration. Exclusion Criteria: * Normal urinary indican values or increased urinary skatole values. * Subjects already on a low FODMAP diet or other dietary restrictions such as gluten-free diet or lactose-free diet within the past 6 months. * Allergies to soy, nuts, or seafood, or insulin-dependent diabetes. * Known history of celiac disease, symptomatic diverticular disease, inflammatory bowel disease, or microscopic colitis. * Prior small bowel or colonic surgery or cholecystectomy. * Presence of bloody diarrhea or severe vomiting. * Severe renal disease (serum creatinine \>1.5 mg/dL) or liver disease (altered liver function tests).