Gastroesophageal Reflux Disease (GERD) Management

Introduction to Acid Suppression Therapies

Potassium-competitive acid blockers (P-CABs) provide more rapid and potent acid suppression than traditional proton pump inhibitors (PPIs) for treating GERD, achieving maximal acid suppression within 1 day, compared to 3-5 days for PPIs 1
P-CABs have a different mechanism of action than PPIs, binding ionically to the proton pump and being acid-stable, allowing for more flexible dosing 1

For patients with severe or refractory GERD, consider twice-daily PPI dosing, and if inadequate response, consider P-CAB therapy (where available) 1, 2
The American Gastroenterological Association recommends P-CAB therapy for patients with severe erosive esophagitis (LA grades C/D) 1
PPIs are beneficial in patients treated with endoscopic variceal ligation (EVL), and pantoprazole may result in smaller post-EVL ulcers and potentially fewer bleeding episodes 3

When a PPI is indicated for patients on clopidogrel, pantoprazole should be the first choice due to its lowest potential for interaction, while omeprazole and esomeprazole should be avoided if possible, as recommended by the European Society of Cardiology and the American College of Cardiology 4, 5, 6
The European Association for the Study of the Liver (EASL) guidelines recommend taking Viropil with food and administering it 4 hours before pantoprazole to minimize interaction, and monitoring for signs of reduced Viropil efficacy 7, 8

Both PPIs and antibiotics are effective components of H. pylori eradication regimens, with common regimens including bismuth quadruple therapy and rifabutin triple therapy, as recommended by the American College of Gastroenterology 9, 10, 11
The American Gastroenterological Association recommends testing for H. pylori in all patients with confirmed peptic disease, and the American College of Gastroenterology recommends eradication therapy (PPI + appropriate antibiotics) for H. pylori-positive peptic ulcer disease, with a strong recommendation and high-quality evidence 9

PPIs should be taken 30-60 minutes before meals to ensure adequate dosing or timing, and once-daily PPI may be split to twice-daily dosing for better 24-hour acid control 12, 13
The American College of Gastroenterology recommends using the lowest effective PPI dose for maintenance therapy and considering twice-daily PPI dosing if partial response is observed 12

Potential side effects of PPIs include headaches, diarrhea, constipation, and nausea (up to 14% of patients), and long-term PPI use may be associated with potential side effects, including headache, diarrhea, and rarely vitamin B12 deficiency in elderly patients with prolonged use 14, 15
Regular review of ongoing indications for PPI use is recommended, and de-prescribing should be considered for patients without definitive indications for chronic PPI use, with a strong recommendation and high-quality evidence 16

Antacids provide direct buffering of gastric acid in the esophagus or stomach, best for on-demand, immediate relief rather than daily maintenance therapy, with limited evidence for effectiveness when used alone for daily acid reduction 14, 13
Consider ambulatory pH monitoring to confirm GERD diagnosis and assess adequacy of acid suppression, according to the Clinical Gastroenterology and Hepatology guidelines 12