Which statement is true about these histamine H2 receptor antagonists?

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Prepare for the Rasmussen Pharmacology Exam 3. This quiz includes multiple-choice questions with hints and explanations. Review essential pharmacological concepts and get ready for your exam!

Multiple Choice

Which statement is true about these histamine H2 receptor antagonists?

Explanation:
Histamine H2 receptor antagonists work by blocking acid secretion on parietal cells. A key practical point is how antacids affect their absorption. Antacids raise gastric pH and can decrease the dissolution and absorption of these drugs, leading to lower daytime drug levels and reduced effectiveness if taken together. Because of this, the best statement is that they should not be taken at the same time as antacids; spacing them (for example, 1 hour before or after an antacid) helps ensure the H2 blocker is absorbed properly. These drugs are not antibiotics and their main interactions aren’t limited to NSAIDs, so those statements aren’t accurate.

Histamine H2 receptor antagonists work by blocking acid secretion on parietal cells. A key practical point is how antacids affect their absorption. Antacids raise gastric pH and can decrease the dissolution and absorption of these drugs, leading to lower daytime drug levels and reduced effectiveness if taken together. Because of this, the best statement is that they should not be taken at the same time as antacids; spacing them (for example, 1 hour before or after an antacid) helps ensure the H2 blocker is absorbed properly. These drugs are not antibiotics and their main interactions aren’t limited to NSAIDs, so those statements aren’t accurate.

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