📌 Introduction
Antiulcer drugs are used to treat peptic ulcer disease by reducing gastric acid secretion or protecting the gastric mucosa. Peptic ulcers occur due to an imbalance between aggressive factors (acid, pepsin) and protective factors (mucus, bicarbonate).
This topic is very important for GPAT, DSSSB, and other pharmacy exams.
🔍 What are Antiulcer Drugs?
Antiulcer drugs help in healing ulcers by decreasing acid production or enhancing mucosal defense mechanisms.
📝 Classification of Antiulcer Drugs
1. Proton Pump Inhibitors (PPIs)
• Omeprazole
• Pantoprazole
2. H2 Receptor Blockers
• Ranitidine
• Famotidine
3. Antacids
• Aluminum hydroxide
• Magnesium hydroxide
4. Cytoprotective Agents
• Sucralfate
• Misoprostol
🧬 Mechanism of Action
• PPIs → inhibit H⁺/K⁺ ATPase (proton pump) → reduce acid secretion
• H2 blockers → block histamine receptors → decrease acid production
• Antacids → neutralize gastric acid
• Cytoprotective → protect gastric mucosa
👉 Result: Ulcer healing and symptom relief
🩺 Pharmacological Effects
• Reduced gastric acid secretion
• Protection of gastric mucosa
• Relief from pain and discomfort
💊 Therapeutic Uses
• Peptic ulcer disease
• Gastroesophageal reflux disease (GERD)
• Zollinger-Ellison syndrome
• Gastritis
🚨 Side Effects
• Headache
• Diarrhea or constipation
• Vitamin B12 deficiency (long-term PPI use)
• Drug interactions
📑 Important Exam Points
• Omeprazole → PPI
• Ranitidine → H2 blocker
• Antacids → immediate relief
• Sucralfate → mucosal protection
🛑 Precautions
• Avoid long-term PPI misuse
• Monitor for drug interactions
• Use appropriate dosage
• Avoid self-medication
🎯 Conclusion
Antiulcer drugs are essential in managing acid-related disorders. Understanding their classification, mechanism, and uses is crucial for pharmacology exams and clinical practice.
👉 Practice MCQs in evening post
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