Diphenhydramine vs Ramipril

## Diphenhydramine vs Ramipril: Overview

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

## Mechanism of Action

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

**Ramipril**: Prodrug converted to ramiprilat; ACE inhibitor.

## Pharmacokinetics

**Half-life**: Diphenhydramine — 2-8 hours; Ramipril — 13-17 hours.

## Chemical Properties

**Molecular Formula**: Diphenhydramine — C17H21NO; Ramipril — C23H32N2O5.

**Molecular Weight**: Diphenhydramine — 255.3550 g/mol; Ramipril — 416.5120 g/mol.

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