Cephalexin vs Methotrexate

## Cephalexin vs Methotrexate: Overview

This comparison examines the pharmacological differences between **Cephalexin** and **Methotrexate**.

## Mechanism of Action

**Cephalexin**: First-generation cephalosporin inhibiting cell wall synthesis.

**Methotrexate**: Dihydrofolate reductase inhibitor.

## Pharmacokinetics

**Half-life**: Cephalexin — 0.5-1.2 hours; Methotrexate — 3-10 hours.

## Chemical Properties

**Molecular Formula**: Cephalexin — C16H17N3O4S; Methotrexate — C20H22N8O5.

**Molecular Weight**: Cephalexin — 347.3890 g/mol; Methotrexate — 454.4400 g/mol.

**Type**: Cephalexin — Small molecule; Methotrexate — Small molecule.