Apixaban vs Sildenafil

## Apixaban vs Sildenafil: Overview

This comparison examines the pharmacological differences between **Apixaban** and **Sildenafil**.

## Mechanism of Action

**Apixaban**: Direct Factor Xa inhibitor.

**Sildenafil**: Selective PDE5 inhibitor increasing cGMP.

## Pharmacokinetics

**Half-life**: Apixaban — 12 hours; Sildenafil — 4 hours.

## Chemical Properties

**Molecular Formula**: Apixaban — C25H25N5O4; Sildenafil — C22H30N6O4S.

**Molecular Weight**: Apixaban — 459.4970 g/mol; Sildenafil — 474.5800 g/mol.

**Type**: Apixaban — Small molecule; Sildenafil — Small molecule.