---
title: "Is Cialis a blood thinner? Interactions and safety"
description: "Cialis (tadalafil) is not a blood thinner. It can lower blood pressure and has key interactions, especially with nitrates and, with clinician guidance."
canonical: "https://www.vitalsvault.com/treatment-learn/ed-medication-interactions"
last-updated: 2026-08-22
---

# Is Cialis a blood thinner? Interactions and safety

> Cialis (tadalafil) is not a blood thinner. It can lower blood pressure and has key interactions, especially with nitrates and, with clinician guidance.

---

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