Gastrointestinal Agents Market Size and Forecasts (2020 - 2030), Global and Regional Share, Trends, and Growth Opportunity Analysis Report Coverage: By Drug Class (Antidiarrheal, Anti-Emetics, Anti-Ulcers, Laxatives, Others); Distribution Channel (Hospital Pharmacies, Retail Pharmacies, Others); and Geography , and Geography (North America, Europe, Asia Pacific, and South and Central America)