Cephalexin vs Ondansetron

## Cephalexin vs Ondansetron: Overview

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

## Mechanism of Action

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

**Ondansetron**: Selective 5-HT3 receptor antagonist.

## Pharmacokinetics

**Half-life**: Cephalexin — 0.5-1.2 hours; Ondansetron — 3-5 hours.

## Chemical Properties

**Molecular Formula**: Cephalexin — C16H17N3O4S; Ondansetron — C18H19N3O.

**Molecular Weight**: Cephalexin — 347.3890 g/mol; Ondansetron — 293.3660 g/mol.

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