Question
Enumerate drugs used in Peptic ulcer. Add a note on Prokinetic agents. (4+4)
Q4 8 marks Short Essays ★ ✓
Answer
Drugs used in peptic ulcer
Group Examples Proton pump inhibitors Omeprazole, Pantoprazole H2 receptor antagonists Ranitidine, Famotidine Antacids Aluminium hydroxide, Magnesium trisilicate Mucosal protective agents Sucralfate, Misoprostol
Note on prokinetic agents
Prokinetics increase gastrointestinal motility and accelerate gastric emptying, useful in GERD, gastroparesis, and functional dyspepsia rather than peptic ulcer directly. Metoclopramide — D2 antagonist with additional 5-HT4 agonist prokinetic action, increases lower esophageal sphincter tone and gastric emptying; adverse effects include extrapyramidal symptoms (crosses the blood-brain barrier). Domperidone — D2 antagonist with similar prokinetic action but minimal CNS penetration, giving a much lower extrapyramidal risk. Mechanism common to both : enhanced acetylcholine release from myenteric neurons via D2 receptor blockade (dopamine normally inhibits ACh release), coordinating antral-duodenal motility.
1 Autacoids
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