Irritable Bowel Syndrome Treatment Market Size, Share & Trends Analysis Report By Product (Rifaximin, Eluxadoline, Lubiprostone, Linaclotide, Others), By Type (IBS with Diarrhea (IBS-D), IBS with Constipation (IBS-C), Mixed IBS), By Distribution Channel (Hospitals pharmacies, Drug Stores and Retail Pharmacies, Online pharmacies) and By Region(North America, Europe, APAC, Middle East and Africa, LATAM) Forecasts, 2025-2033