Digestive Enzyme Formulation Intervention in IBS Patients Who Previously Clinically Responded to Mediterranean LFD

A jar or single-dose sachets containing the digestive enzymes in the form of powder will be provided to each patient at the study entry. Patients will be instructed to use the powder formulation according to manufacturer instructions and according to the meals that they consume per day, for 1 month. Participants will be asked to return the jar or the single dose sachets with the remaining product to assess compliance either by weighting the jar or by counting the number of single-dose sachets returned. To reduce the placebo effect, patients will be misinformed that half will take a placebo formulation, randomly. Participants will be asked to return the jar or the single-dose sachets with the remaining product to assess compliance either by weighting the jar or by counting the number of single-dose sachets returned.