Diphenhydramine vs Gabapentin

Diphenhydramine vs Gabapentin: Overview

This comparison examines the pharmacological differences between Diphenhydramine and Gabapentin.

Mechanism of Action

Diphenhydramine: First-generation H1 antihistamine with anticholinergic properties.

Gabapentin: Binds alpha-2-delta subunit of voltage-gated calcium channels.

Pharmacokinetics

Half-life: Diphenhydramine — 2-8 hours; Gabapentin — 5-7 hours.

Chemical Properties

Molecular Formula: Diphenhydramine — C17H21NO; Gabapentin — C9H17NO2.

Molecular Weight: Diphenhydramine — 255.3550 g/mol; Gabapentin — 171.2370 g/mol.

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