Diphenhydramine vs Enalapril

## Diphenhydramine vs Enalapril: Overview

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

## Mechanism of Action

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

**Enalapril**: Prodrug converted to enalaprilat; inhibits ACE preventing angiotensin I to II conversion.

## Pharmacokinetics

**Half-life**: Diphenhydramine — 2-8 hours; Enalapril — 11 hours.

## Chemical Properties

**Molecular Formula**: Diphenhydramine — C17H21NO; Enalapril — C20H28N2O5.

**Molecular Weight**: Diphenhydramine — 255.3550 g/mol; Enalapril — 376.4470 g/mol.

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