Erlotinib vs Ranitidine

## Erlotinib vs Ranitidine: Overview

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

## Mechanism of Action

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

**Ranitidine**: Competitive H2 receptor antagonist.

## Pharmacokinetics

**Half-life**: Erlotinib — 36 hours; Ranitidine — 2-3 hours.

## Chemical Properties

**Molecular Formula**: Erlotinib — C22H23N3O4; Ranitidine — C13H22N4O3S.

**Molecular Weight**: Erlotinib — 393.4380 g/mol; Ranitidine — 314.4050 g/mol.

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