Albuterol vs Diphenhydramine

## Albuterol vs Diphenhydramine: Overview

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

## Mechanism of Action

**Albuterol**: Selective beta-2 adrenergic receptor agonist causing bronchodilation.

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

## Pharmacokinetics

**Half-life**: Albuterol — 3-8 hours; Diphenhydramine — 2-8 hours.

## Chemical Properties

**Molecular Formula**: Albuterol — C13H21NO3; Diphenhydramine — C17H21NO.

**Molecular Weight**: Albuterol — 239.3110 g/mol; Diphenhydramine — 255.3550 g/mol.

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