Which medication is an example of a proton pump inhibitor?

Which medication is an example of a proton pump inhibitor?

• A. Pantoprazole
• B. Ranitidine
• C. Metoclopramide
• D. Sucralfate

Answer: (A)

Proton pump inhibitors block the final step of acid production in the stomach by inhibiting the proton pump (H+/K+ ATPase) in gastric parietal cells. Pantoprazole does exactly that, reducing gastric acid secretion and helping with conditions like GERD and ulcers. The other drugs work by different mechanisms: ranitidine is an H2 receptor blocker that decreases acid production by blocking histamine’s effect on parietal cells; metoclopramide is a prokinetic antiemetic that increases gastric motility; and sucralfate forms a protective barrier over ulcers rather than lowering acid. So pantoprazole is the clear example of a proton pump inhibitor.

Proton pump inhibitors block the final step of acid production in the stomach by inhibiting the proton pump (H+/K+ ATPase) in gastric parietal cells. Pantoprazole does exactly that, reducing gastric acid secretion and helping with conditions like GERD and ulcers. The other drugs work by different mechanisms: ranitidine is an H2 receptor blocker that decreases acid production by blocking histamine’s effect on parietal cells; metoclopramide is a prokinetic antiemetic that increases gastric motility; and sucralfate forms a protective barrier over ulcers rather than lowering acid. So pantoprazole is the clear example of a proton pump inhibitor.