Sildenafil, the active ingredient in Viagra, treats erectile dysfunction (ED) by increasing blood flow to the penis. This happens because it inhibits an enzyme called phosphodiesterase-5 (PDE5), allowing nitric oxide to work more effectively. Nitric oxide relaxes the blood vessels, resulting in improved penile blood flow and facilitating an erection.
How Sildenafil Works
Specifically, Sildenafil’s action on PDE5 is targeted. Sexual stimulation is required to initiate the process; Sildenafil doesn’t create erections spontaneously. It only enhances the body’s natural response to sexual stimulation. The drug’s effect typically lasts for several hours.
Factors Affecting Sildenafil’s Efficacy
Several factors can influence how well Sildenafil works. These include underlying health conditions like heart disease or diabetes, and interactions with other medications. Alcohol and fatty foods can also delay or reduce its effectiveness. Always consult your doctor to determine the appropriate dosage and discuss potential interactions.
