Cephalexin vs Phenytoin

## Cephalexin vs Phenytoin: Overview

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

## Mechanism of Action

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

**Phenytoin**: Sodium channel blocker stabilizing inactive state.

## Pharmacokinetics

**Half-life**: Cephalexin — 0.5-1.2 hours; Phenytoin — 22 hours.

## Chemical Properties

**Molecular Formula**: Cephalexin — C16H17N3O4S; Phenytoin — C15H12N2O2.

**Molecular Weight**: Cephalexin — 347.3890 g/mol; Phenytoin — 252.2680 g/mol.

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