Internal Medicine Sections Gastroenterology
GlobalRPh Clinical Reference Library

Gastroenterology & Digestive Health Resource Center

Gastrointestinal bleeding and IBD scores, IBS and diarrhea tools, pancreatitis assessment, acid-suppression and H. pylori resources, endoscopy and colorectal-cancer content, microbiome updates, GI drug tables, and cross-links to GlobalRPh Hepatology resources.

Clinical background

GI symptoms often require both pattern recognition and disease-specific risk assessment

Gastroenterology spans disorders of motility and gut–brain interaction, mucosal inflammation, infection, bleeding, pancreatic and biliary disease, colorectal neoplasia, malabsorption, medication effects, and digestive manifestations of systemic disease. Similar symptoms can arise from very different mechanisms, making clinical context as important as any individual score or calculator.

This updated portal organizes GlobalRPh’s established GI calculators, gastrointestinal drug tables, newer 2025–2026 articles and selected guideline resources by bedside problem. Liver-related scores remain cross-linked here because they have historically lived in the Gastroenterology calculator collection, while the dedicated Hepatology portal remains the preferred location for broader liver disease content.

Symptoms & function IBS, diarrhea, constipation, motility and gut–brain interaction.
Inflammation & infection IBD, H. pylori, C. difficile and other mucosal disease.
Bleeding & endoscopy UGIB risk, colonoscopy, polypectomy and advanced endoscopy.
Pancreatic & hepatobiliary Pancreatitis, cirrhosis, alcohol-associated liver disease and MASLD.
  • Irritable bowel syndrome
  • Inflammatory bowel disease
  • Upper GI bleeding
  • H. pylori & acid suppression
  • Colonoscopy & endoscopy
  • Acute pancreatitis
  • Microbiome & C. difficile
  • Hepatology crossover
Clinician Discussing Gastrointestinal Symptoms With A Patient

Core GlobalRPh calculators

Gastroenterology & Hepatology scoring tools

The original portal contains a large calculator library. The revised page groups the tools by clinical question so users do not have to scan one long list.

Rome III remains available as a historical diagnostic framework

The current Gastroenterology portal links both Rome III and Rome IV. We are keeping the older Rome III tool available for historical and research-context use, while Rome IV is displayed first for the contemporary IBS diagnostic framework.

Looking primarily for liver-disease resources?

Cirrhosis, alcohol-associated liver disease, transplant scoring and MASLD overlap with Gastroenterology, but GlobalRPh also maintains a dedicated Hepatology section. We are keeping liver scores visible here until that section receives the same comprehensive portal update.

IBD, IBS & bowel disorders

Inflammatory bowel disease, disorders of gut-brain interaction and bowel symptoms

Activity scores can support standardized assessment, but modern IBD care also relies on objective disease activity, biomarkers, endoscopy or imaging when indicated, treatment targets, complications, medication safety and patient-reported outcomes.

Upper gastrointestinal bleeding

Pre-endoscopic risk, clinical outcomes and endoscopic stigmata

Upper GI disease, acid suppression & H. pylori

Medication tables plus newer resistance-focused H. pylori content

H. pylori treatment is particularly sensitive to antibiotic resistance and prior macrolide exposure. The older drug table remains available, but current ACG guidance favors optimized bismuth quadruple therapy for many treatment-naïve patients and advises against empiric clarithromycin triple therapy unless susceptibility is known.

Endoscopy, colorectal cancer & surveillance

Colonoscopy quality, AI-assisted detection, surveillance and emerging endoscopy

GlobalRPh has developed a substantial recent endoscopy library that was not visible from the older Gastroenterology portal.

Pancreas & biliary disease

Acute pancreatitis risk assessment and current care context

Acute pancreatitis score

Ranson’s criteria remain historically important, but current pancreatitis management is not based on a single admission score. We plan to update the surrounding clinical context when this page is refreshed.

Hepatology crossover

MASLD, cirrhosis, alcohol-associated liver disease and transplant scoring

Liver scores historically account for a large portion of the GlobalRPh Gastroenterology calculator library. We are retaining those links here while making the separate Hepatology destination much more visible.

The transplant-allocation MELD formula was updated effective July 13, 2023. We are keeping the existing GlobalRPh MELD and MELD-Na pages accessible while we rebuild them around the current formula and clearly distinguish transplant-allocation scoring from historical MELD calculations.

Gastrointestinal pharmacotherapy

GlobalRPh GI drug-table library

The original portal already contains a useful medication library. It is reorganized below by clinical purpose.

Several GI drug tables have been maintained for many years. We are preserving them as working clinical references while progressively updating product availability, current indications, treatment sequencing, safety information and newer drug classes.

Microbiome, recurrent C. difficile & metabolic GI research

One of the fastest-growing areas in the GlobalRPh GI library

GlobalRPh gastroenterology article library

Recent and established GI reading

The previous portal primarily surfaced 2024 material. This updated library brings forward the stronger 2025–2026 Gastroenterology content while preserving access to the complete archive.

2026

2025

Established GlobalRPh GI content

GlobalRPh gastroenterology video

Existing digestive-health videos now surfaced on the portal

The old Gastroenterology portal had an empty video area even though GlobalRPh’s main video library already includes GI and microbiome content.

Gut microbiome / post-infectious GI

New Research Reveals Hidden Gut Virus Connection

Planned GlobalRPh updates

Areas we’re continuing to improve in the Gastroenterology library

GlobalRPh has maintained many of these GI calculators and drug tables for years while diagnostic criteria, endoscopic practice, IBD therapy, transplant scoring, H. pylori resistance patterns and liver-disease treatment have evolved. As we work through this section, we plan to preserve the practical tools while updating the clinical logic, reference base and safety context around them.

Pages we plan to refresh

  • MELD / MELD-Na: this is one of our highest-priority updates. The current transplant-allocation MELD formula changed in July 2023. We plan to rebuild the GlobalRPh calculator around the current variables and clearly identify older MELD and MELD-Na formulas as historical.
  • Rome III / Rome IV: we plan to make Rome IV the primary IBS diagnostic page, retain Rome III as a historical/research reference, and improve the explanation of disorders of gut-brain interaction and red-flag features that require evaluation outside a symptom-based framework.
  • IBS Treatment Options: the existing page contains useful material but an older reference base. We plan to incorporate current dietary therapy, soluble fiber, secretagogues, rifaximin, neuromodulators, digital CBT, pelvic-floor considerations and evidence around microbiome-directed approaches.
  • IBD Drug Table / TNF Inhibitors: we plan to expand this beyond older TNF-centered treatment pathways to reflect current biologics, small molecules, treatment sequencing, treat-to-target concepts, preventive care, infection screening and the 2025 Crohn’s and ulcerative-colitis guidelines.
  • Crohn’s and ulcerative-colitis scores: we plan to preserve CDAI, Harvey-Bradshaw and Mayo scoring while making it clearer how symptom scores relate to biomarkers, endoscopy, imaging and modern treatment targets.
  • H. pylori Drug Table: we plan to rebuild the regimen table around the 2024 ACG guideline, antibiotic resistance, optimized bismuth quadruple therapy, susceptibility-guided therapy, rifabutin/vonoprazan options where appropriate and confirmation of eradication.
  • PPI / H2 / antacid tables: we plan to update currently marketed products, comparative acid suppression, indications, interaction concerns, long-term-use considerations and the evolving role of potassium-competitive acid blockers.
  • Upper GI bleeding scores: we plan to retain Glasgow-Blatchford, Rockall and Forrest classification while updating their clinical context, pre-endoscopic triage, transfusion strategy, PPI use, timing of endoscopy and anticoagulant-management links.
  • Ranson’s Criteria: we plan to preserve this historically important pancreatitis score while adding contemporary acute-pancreatitis context, including risk assessment, fluid strategy, early feeding, biliary disease evaluation and when higher-acuity monitoring is warranted.
  • Laxatives / constipation therapy: we plan to update the older drug table around current chronic idiopathic constipation pharmacotherapy, secretagogues, prokinetic therapy, opioid-induced constipation and appropriate evaluation of secondary causes.
  • Antidiarrheals / antispasmodics / anticholinergics / antiemetics: we plan to re-check current product availability, contraindications, geriatric considerations, QT risk, drug interactions and syndrome-specific use.
  • Alcohol-associated hepatitis scores: we plan to retain ABIC, AHHS, GAHS, Lille and Maddrey while updating terminology, treatment context, current guideline links and the distinction between prognostic scoring and treatment eligibility.
  • MASLD / MASH tools: we plan to add a stronger noninvasive fibrosis-assessment pathway and connect future tools with current AASLD guidance, metabolic-risk assessment and newer pharmacotherapy.
  • Endoscopy content: we plan to continue expanding the portal around modern surveillance intervals, bowel-preparation quality, advanced endoscopic resection, AI-assisted detection and post-polypectomy follow-up.
Our goal is not simply to restyle the older pages. We plan to update the evidence and clinical assumptions first, then improve the interface so the Gastroenterology tools remain practical and current.

Current external clinical guidance

Primary GI and liver guideline resources

Gastroenterology changes rapidly across IBD, H. pylori, endoscopy, liver disease and pancreatitis. These primary professional sources provide current context while individual GlobalRPh pages are progressively refreshed.

American College of Gastroenterology – Guideline Library Current ACG guidance across IBD, H. pylori, GI bleeding, pancreatitis, endoscopy, constipation, IBS, EoE and liver disease. Open the ACG guideline library
ACG 2025 – Crohn’s Disease in Adults Updated clinical guideline for adult Crohn’s disease diagnosis and management. Open Crohn’s guideline summary
ACG 2025 – Ulcerative Colitis in Adults Updated adult ulcerative-colitis guideline covering disease assessment and contemporary therapy. Open UC guideline summary
ACG 2024 – H. pylori Treatment Current resistance-aware H. pylori treatment recommendations and eradication principles. Open H. pylori guideline summary
ACG – Acute Pancreatitis Current ACG guideline resources for diagnosis, early management and complications of acute pancreatitis. Open ACG pancreatitis guidance
AASLD – MASLD / MASH Practice Guidance Current liver guidance including updated pharmacotherapy and metabolic liver-disease management. Open AASLD MASLD guidance
OPTN / HRSA – Current MELD Calculator Official transplant-allocation MELD calculator reflecting the formula changes effective July 2023. Open the current MELD calculator
AASLD – Practice Guideline Library Primary liver-disease guidance covering cirrhosis, alcohol-associated liver disease, MASLD and other hepatology conditions. Open AASLD guidelines

Supporting GlobalRPh resources

Related clinical portals, laboratories and evidence tools

Historical GI content remains accessible while we work through the section

We are keeping established scores and older drug tables accessible when they still have clinical, educational or historical value. The planned-update section identifies where we intend to refresh terminology, evidence, product availability, scoring logic or guideline context without breaking longstanding GlobalRPh links.

Alphabetical Listing of individual drugs

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Common LAB Values  Renal Dosing