Erlotinib vs Methylprednisolone

## Erlotinib vs Methylprednisolone: Overview

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

## Mechanism of Action

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

**Methylprednisolone**: Intermediate-acting synthetic glucocorticoid.

## Pharmacokinetics

**Half-life**: Erlotinib — 36 hours; Methylprednisolone — 18-36 hours.

## Chemical Properties

**Molecular Formula**: Erlotinib — C22H23N3O4; Methylprednisolone — C22H30O5.

**Molecular Weight**: Erlotinib — 393.4380 g/mol; Methylprednisolone — 374.4710 g/mol.

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