Erlotinib vs Sumatriptan

## Erlotinib vs Sumatriptan: Overview

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

## Mechanism of Action

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

**Sumatriptan**: Selective 5-HT1B/1D receptor agonist.

## Pharmacokinetics

**Half-life**: Erlotinib — 36 hours; Sumatriptan — 2.5 hours.

## Chemical Properties

**Molecular Formula**: Erlotinib — C22H23N3O4; Sumatriptan — C14H21N3O2S.

**Molecular Weight**: Erlotinib — 393.4380 g/mol; Sumatriptan — 295.4020 g/mol.

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