Cephalexin vs Doxycycline

Cephalexin vs Doxycycline: Overview

This comparison examines the pharmacological differences between Cephalexin and Doxycycline.

Mechanism of Action

Cephalexin: First-generation cephalosporin inhibiting cell wall synthesis.

Doxycycline: Inhibits bacterial protein synthesis by binding 30S ribosomal subunit.

Pharmacokinetics

Half-life: Cephalexin — 0.5-1.2 hours; Doxycycline — 18-22 hours.

Chemical Properties

Molecular Formula: Cephalexin — C16H17N3O4S; Doxycycline — C22H24N2O8.

Molecular Weight: Cephalexin — 347.3890 g/mol; Doxycycline — 444.4350 g/mol.

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