Methotrexate vs Metronidazole

## Methotrexate vs Metronidazole: Overview

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

## Mechanism of Action

**Methotrexate**: Dihydrofolate reductase inhibitor.

**Metronidazole**: Forms cytotoxic free radicals that damage bacterial DNA.

## Pharmacokinetics

**Half-life**: Methotrexate — 3-10 hours; Metronidazole — 8 hours.

## Chemical Properties

**Molecular Formula**: Methotrexate — C20H22N8O5; Metronidazole — C6H9N3O3.

**Molecular Weight**: Methotrexate — 454.4400 g/mol; Metronidazole — 171.1540 g/mol.

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