Amlodipine vs Diphenhydramine

## Amlodipine vs Diphenhydramine: Overview

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

## Mechanism of Action

**Amlodipine**: Dihydropyridine calcium channel blocker.

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

## Pharmacokinetics

**Half-life**: Amlodipine — 30-50 hours; Diphenhydramine — 2-8 hours.

## Chemical Properties

**Molecular Formula**: Amlodipine — C20H25ClN2O5; Diphenhydramine — C17H21NO.

**Molecular Weight**: Amlodipine — 408.8800 g/mol; Diphenhydramine — 255.3550 g/mol.

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