Erlotinib vs Escitalopram

## Erlotinib vs Escitalopram: Overview

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

## Mechanism of Action

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

**Escitalopram**: S-enantiomer of citalopram; selective serotonin reuptake inhibitor.

## Pharmacokinetics

**Half-life**: Erlotinib — 36 hours; Escitalopram — 27-32 hours.

## Chemical Properties

**Molecular Formula**: Erlotinib — C22H23N3O4; Escitalopram — C20H21FN2O.

**Molecular Weight**: Erlotinib — 393.4380 g/mol; Escitalopram — 324.3920 g/mol.

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