Global Gastrointestinal Drugs Market By Type (Prescription Gastrointestinal Drug, and OTC Gastrointestinal Drug), By Application (Chronic Gastritis, Functional Dyspepsia, Peptic Ulcer, Acute Gastroenteritis, and Other), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2019-2028