Cimetidine, Famotidine, and Nizatidine belong to which class of medications?

Prepare for the Adult-Gerontology Acute Care Nurse Practitioner Test. Study with interactive quizzes and detailed explanations. Boost your exam readiness with our diverse question formats and in-depth content coverage.

Multiple Choice

Cimetidine, Famotidine, and Nizatidine belong to which class of medications?

These medicines are H2 receptor antagonists. They work by blocking histamine at H2 receptors on the acid-producing parietal cells of the stomach. That interference reduces the production of gastric acid, leading to a higher gastric pH and relief of acid-related symptoms. Clinically, they’re used for gastroesophageal reflux disease, peptic ulcers, gastritis, and NSAID-induced ulcers. They act as competitive antagonists and are typically reversible, with effects that help suppress both basal and meal-stimulated acid secretion. This differs from proton pump inhibitors, which shut down the final step of acid production by inhibiting the H+/K+-ATPase pump. It’s not about H1 antihistamines, which target allergy-related receptors, nor mucosal protective agents, which don’t directly suppress acid production but protect the mucosa.

These medicines are H2 receptor antagonists. They work by blocking histamine at H2 receptors on the acid-producing parietal cells of the stomach. That interference reduces the production of gastric acid, leading to a higher gastric pH and relief of acid-related symptoms. Clinically, they’re used for gastroesophageal reflux disease, peptic ulcers, gastritis, and NSAID-induced ulcers. They act as competitive antagonists and are typically reversible, with effects that help suppress both basal and meal-stimulated acid secretion.

This differs from proton pump inhibitors, which shut down the final step of acid production by inhibiting the H+/K+-ATPase pump. It’s not about H1 antihistamines, which target allergy-related receptors, nor mucosal protective agents, which don’t directly suppress acid production but protect the mucosa.

More practice questions