Chapter 46: Gastrointestinal Medications

Gastric protectants including sucralfate and misoprostol are examined with attention to nursing considerations, contraindications during pregnancy, and proper administration relative to meal times. The chapter details acid-suppressing medications in depth, covering both H2-receptor antagonists and proton pump inhibitors, including mechanisms of action, appropriate dosing intervals, monitoring for adverse effects, and clinical situations where each class is preferred. Helicobacter pylori eradication therapy is addressed through discussion of both triple and quadruple drug regimens that combine antibiotics with acid suppressants. Additional content covers prokinetic agents that enhance gastric motility, bile acid sequestrants for lipid management, medications that reduce ammonia levels in hepatic encephalopathy, and pancreatic enzyme replacements for patients with insufficient pancreatic function. The chapter extensively addresses inflammatory bowel disease treatments spanning conventional corticosteroids to immunomodulating agents and biologic therapies. Medications specific to irritable bowel syndrome management are reviewed with discussion of their mechanisms and relevant safety concerns. The content concludes with thorough coverage of antiemetic medications, laxatives categorized by their physiologic action, and antidiarrheal agents with attention to opioid-related risks and appropriate clinical use. Throughout the chapter, nursing implications emphasize medication timing with meals, electrolyte monitoring, hydration assessment, and patient education regarding expected outcomes and adverse effect recognition.