Sildenafil vs Tramadol

## Sildenafil vs Tramadol: Overview

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

## Mechanism of Action

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

**Tramadol**: Mu-opioid receptor agonist and serotonin-norepinephrine reuptake inhibitor.

## Pharmacokinetics

**Half-life**: Sildenafil — 4 hours; Tramadol — 5-7 hours.

## Chemical Properties

**Molecular Formula**: Sildenafil — C22H30N6O4S; Tramadol — C16H25NO2.

**Molecular Weight**: Sildenafil — 474.5800 g/mol; Tramadol — 263.3750 g/mol.

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