Question

is a proton pump inhibitor.

• A. Ranitidine
• B. Omeprazole
• C. Sucralfate
• D. Famotidine

Hint:

PPIs usually end with the suffix "-prazole" (e.g., Omeprazole, Pantoprazole).

Answer 1

The Correct Option is B

Step 1: Concept
Proton Pump Inhibitors (PPIs) are drugs that provide potent and long-lasting reduction of gastric acid production.

Step 2: Meaning
They work by irreversibly blocking the enzyme system $H^+/K^+$ ATPase (the proton pump) in the gastric parietal cells.

Step 3: Analysis
Ranitidine and Famotidine are $H_2$-receptor antagonists. Sucralfate is a mucosal protective agent. Omeprazole is the prototype drug of the PPI class.

Step 4: Conclusion
Therefore, Omeprazole is the correct example of a proton pump inhibitor.

Final Answer: (B)