Cialis, containing tadalafil, works by inhibiting a specific enzyme called phosphodiesterase-5 (PDE5). This enzyme normally breaks down a chemical messenger, cyclic guanosine monophosphate (cGMP), which is crucial for achieving and maintaining an erection.
How Tadalafil Improves Erectile Function
By blocking PDE5, tadalafil allows cGMP levels to remain elevated. Higher cGMP levels relax the smooth muscles in the penis, increasing blood flow. This increased blood flow is what leads to a firmer and longer-lasting erection. The effect is gradual, starting with improved blood flow and culminating in a satisfactory erection when sexual stimulation occurs.
Duration and Effects
A key difference between Cialis and Viagra is its longer duration of action. Tadalafil’s effects can last up to 36 hours, significantly longer than Viagra’s 4-5 hour window. This means Cialis allows for spontaneity, as opposed to needing precise timing. However, an erection won’t occur without sexual stimulation; the drug simply enhances the body’s natural response.
Important Considerations
Side effects are possible, and vary from person to person. Common side effects include headache, flushing, nasal congestion, and indigestion. Consult your doctor before starting Cialis, particularly if you have heart problems, high or low blood pressure, or eye problems. Interactions with other medications are also possible, so complete disclosure of your current medications is crucial. Tadalafil is not a cure for erectile dysfunction but a treatment to help men achieve and maintain erections.
