Erlotinib vs Paroxetine

## Erlotinib vs Paroxetine: Overview

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

## Mechanism of Action

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

**Paroxetine**: Potent selective serotonin reuptake inhibitor with additional muscarinic and NE reuptake inhibition.

## Pharmacokinetics

**Half-life**: Erlotinib — 36 hours; Paroxetine — 21 hours.

## Chemical Properties

**Molecular Formula**: Erlotinib — C22H23N3O4; Paroxetine — C19H20FNO3.

**Molecular Weight**: Erlotinib — 393.4380 g/mol; Paroxetine — 329.3730 g/mol.

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