Answer
Oct 29, 2025 - 12:00 PM
The active ingredient in Cialis is tadalafil, which is a phosphodiesterase type 5 enzyme (PDE5) inhibitor. By blocking PDE5, tadalafil increases blood flow to the xxxx during sexual stimulation, making it easier to achieve and maintain erections. Knowing this helps you understand how Cialis works and why it’s effective for treating erectile dysfunction.
