Erlotinib vs Metronidazole

## Erlotinib vs Metronidazole: Overview

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

## Mechanism of Action

**Erlotinib**: Reversible inhibitor of EGFR (HER1) tyrosine kinase, blocking autophosphorylation.

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

## Pharmacokinetics

**Half-life**: Erlotinib — 36 hours; Metronidazole — 8 hours.

## Chemical Properties

**Molecular Formula**: Erlotinib — C22H23N3O4; Metronidazole — C6H9N3O3.

**Molecular Weight**: Erlotinib — 393.4380 g/mol; Metronidazole — 171.1540 g/mol.

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