Medications Affecting the Gastrointestinal System

RN Nursing Pharmacology Medications Affecting the Gastrointestinal System is the focus of this page, and it covers everything you need to feel confident about GI-related drugs before your next exam. You'll work through the major drug classes used to treat conditions like acid reflux, peptic ulcers, nausea, constipation, diarrhea, and inflammatory bowel disease. Each topic breaks down how these medications work, why they're prescribed, common side effects, and the nursing considerations you're expected to apply in clinical scenarios.

This page is designed for RN nursing students in their second or third year who are preparing for pharmacology course exams, med-surg assessments, or comprehensive nursing licensure exams. GI medications show up frequently in exam questions because they require you to connect drug mechanisms to patient safety — think electrolyte imbalances from laxatives, rebound acidity from proton pump inhibitors, or the anticholinergic effects of certain antiemetics. Understanding these connections is what separates a surface-level answer from a correct one.

Ready to test yourself? Start a practice session using the questions tied to this topic and see which drug classes you already have down and which ones need more attention. Use your results to guide your review, then come back and work through any gaps. Consistent, focused practice on topics like GI pharmacology is one of the best ways to build the kind of applied knowledge that nursing exams demand.