Diazepam vs Diphenhydramine

Diazepam vs Diphenhydramine: Overview

This comparison examines the pharmacological differences between Diazepam and Diphenhydramine.

Mechanism of Action

Diazepam: Positive allosteric modulator of GABA-A receptors.

Diphenhydramine: First-generation H1 antihistamine with anticholinergic properties.

Pharmacokinetics

Half-life: Diazepam — 20-100 hours; Diphenhydramine — 2-8 hours.

Chemical Properties

Molecular Formula: Diazepam — C16H13ClN2O; Diphenhydramine — C17H21NO.

Molecular Weight: Diazepam — 284.7400 g/mol; Diphenhydramine — 255.3550 g/mol.

Type: Diazepam — Small molecule; Diphenhydramine — Small molecule.