---
title: "Half life of Cialis: how long it stays"
description: "The half life of Cialis is about 17.5 hours, so tadalafil can remain in your system for several days. Kidney, liver, and drug interactions can matter."
canonical: "https://www.vitalsvault.com/treatment-learn/how-long-cialis-stay-in-your-system"
last-updated: 2026-08-22
---

# Half life of Cialis: how long it stays

> The half life of Cialis is about 17.5 hours, so tadalafil can remain in your system for several days. Kidney, liver, and drug interactions can matter.

---

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