Positive Outcomes of the Supplementation With Lecithin-based Delivery Form of Curcuma Longa and of Boswellia Serrata in IBS

Inclusion Criteria: * age ranging from 18 to 70 years; * diagnosis of moderate IBS according to Rome IV criteria; * dysbiosis of the small bowel, defined by increased urinary indican values with normal values of urinary skatole; * evidence of abdominal bloating and abdominal pain Exclusion Criteria: * normal values of urinary indican or increased values of urinary skatole ; * subjects who were already on a low FODMAP diet (LFD) or other dietary prescription, such as lactose or gluten free diet in the last 6 months; * insulin-dependent diabetes or seafood, nuts or soy allergies ; * positive history of symptomatic diverticular disease, celiac disease, inflammatory bowel disease or microscopic colitis; * colonic or small bowel or gallbladder surgery ; * severe vomiting or bloody diarrhea ; * liver disease (defined as altered values of liver function tests) or severe renal disease (defined as serum creatinine \>1.5 mg/dL) or treatment with antibiotics, excluding those for topical use, within the last three months