What Is Cialis? Uses, Benefits, and How It Works
Introducing the first FDA-approved, as-needed treatment for erectile dysfunction — Cialis.
Clinically proven to help men regain confidence, improve erections, and restore a satisfying sex life when they need it most.
Cialis was developed to help you regain control of your sex life — on your terms.
Here’s how it works:
Improves erectile function
And reduces performance-related stress.
Taken when you choose
You decide when the moment feels right — for connection, confidence, or simply because you want to.
Starts working in about 30–60 minutes
And can remain effective for up to 4–6 hours — though your experience may vary.*
No strict alcohol restrictions
Enjoy the moment — and say cheers to confidence and connection.
Do not use Cialis if you have:
High blood pressure that is not controlled (uncontrolled hypertension)
Do not use Cialis if you have uncontrolled high blood pressure — talk to your doctor to determine if treatment is safe for you.
Known heart (cardiovascular) disease
If you have a history of heart disease, consult your doctor before using Cialis. Sexual activity can put extra strain on the heart.
Cialis is not indicated for use in women or children, and it is not approved to increase sexual desire or enhance performance beyond treating erectile dysfunction.
How does Cialis work?
Sexual arousal starts in the brain but depends on proper blood flow to achieve and maintain an erection.
Cialis works by increasing blood flow to the penis during sexual stimulation. It does this by inhibiting an enzyme called PDE5, which can restrict blood flow. By blocking PDE5, Cialis helps relax the blood vessels and improve circulation — allowing for a firm, lasting erection when arousal occurs.
Cialis does not increase sexual desire, but it helps the body respond physically when desire is present.
See the results you’ve been waiting for
Cialis has been studied in thousands of men with erectile dysfunction, across a wide range of ages and health backgrounds.† Many reported improved confidence, stronger erections, and a renewed sense of intimacy in their relationships.
Their stories often reflect the frustration of living with ED — and the relief that comes with finding a solution that works.
†Clinical trials and decades of real-world use support Cialis’s safety and effectiveness.
Here’s what they experienced
Viagra improved erectile function and reduced performance-related anxiety.
After taking Viagra, many men experienced lasting improvements in their ability to achieve and maintain an erection, along with greater confidence and satisfaction in their sex life.
The most common side effects of Viagra include headache, flushing, upset stomach, nasal congestion, and dizziness.
Nearly 80% of men who completed clinical trials with Viagra chose to continue treatment, citing improved sexual performance and quality of life.