Cephalexin vs Diphenhydramine

Cephalexin vs Diphenhydramine: Overview

This comparison examines the pharmacological differences between Cephalexin and Diphenhydramine.

Mechanism of Action

Cephalexin: First-generation cephalosporin inhibiting cell wall synthesis.

Diphenhydramine: First-generation H1 antihistamine with anticholinergic properties.

Pharmacokinetics

Half-life: Cephalexin — 0.5-1.2 hours; Diphenhydramine — 2-8 hours.

Chemical Properties

Molecular Formula: Cephalexin — C16H17N3O4S; Diphenhydramine — C17H21NO.

Molecular Weight: Cephalexin — 347.3890 g/mol; Diphenhydramine — 255.3550 g/mol.

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