---
title: "How does Cialis work? Mechanism and timing"
description: "Cialis (tadalafil) helps erections by boosting blood flow when you are sexually stimulated. It works by blocking PDE5, raising, with clinician guidance."
canonical: "https://www.vitalsvault.com/treatment-learn/how-does-cialis-work"
last-updated: 2026-08-22
---

# How does Cialis work? Mechanism and timing

> Cialis (tadalafil) helps erections by boosting blood flow when you are sexually stimulated. It works by blocking PDE5, raising, with clinician guidance.

---

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