Diphenhydramine vs Omeprazole

## Diphenhydramine vs Omeprazole: Overview

This comparison examines the pharmacological differences between **Diphenhydramine** and **Omeprazole**.

## Mechanism of Action

**Diphenhydramine**: First-generation H1 antihistamine with anticholinergic properties.

**Omeprazole**: Proton pump inhibitor that irreversibly blocks H+/K+-ATPase.

## Pharmacokinetics

**Half-life**: Diphenhydramine — 2-8 hours; Omeprazole — 0.5-1 hour.

## Chemical Properties

**Molecular Formula**: Diphenhydramine — C17H21NO; Omeprazole — C17H19N3O3S.

**Molecular Weight**: Diphenhydramine — 255.3550 g/mol; Omeprazole — 345.4170 g/mol.

**Type**: Diphenhydramine — Small molecule; Omeprazole — Small molecule.