Erlotinib vs Venlafaxine

## Erlotinib vs Venlafaxine: Overview

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

## Mechanism of Action

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

**Venlafaxine**: Serotonin-norepinephrine reuptake inhibitor (SNRI).

## Pharmacokinetics

**Half-life**: Erlotinib — 36 hours; Venlafaxine — 5 hours.

## Chemical Properties

**Molecular Formula**: Erlotinib — C22H23N3O4; Venlafaxine — C17H27NO2.

**Molecular Weight**: Erlotinib — 393.4380 g/mol; Venlafaxine — 277.4020 g/mol.

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