Rituximab vs Trimethoprim

## Rituximab vs Trimethoprim: Overview

This comparison examines the pharmacological differences between **Rituximab** and **Trimethoprim**.

## Mechanism of Action

**Rituximab**: Chimeric anti-CD20 IgG1 monoclonal antibody inducing B-cell depletion via CDC, ADCC, and apoptosis.

**Trimethoprim**: Dihydrofolate reductase inhibitor (bacterial selective).

## Pharmacokinetics

**Half-life**: Rituximab — 22 days; Trimethoprim — 8-10 hours.

## Chemical Properties

**Molecular Formula**: Rituximab — N/A; Trimethoprim — C14H18N4O3.

**Molecular Weight**: Rituximab — N/A; Trimethoprim — 290.3180 g/mol.

**Type**: Rituximab — Antibody; Trimethoprim — Small molecule.