Viagra, or sildenafil, works by inhibiting the enzyme phosphodiesterase, which influences blood flow to the penis. By blocking this enzyme, Viagra enhances blood flow, making it easier to achieve and maintain an erection. However, it doesn't treat the underlying causes of erectile dysfunction; it only helps alleviate the symptoms.

It's important to understand that Viagra does not increase sexual desire. The medication is only effective when there is sexual arousal, as it supports the physiological process of achieving an erection but does not trigger it independently. Many people mistakenly think of Viagra as a cure-all, but it simply helps improve erectile function for those with erectile dysfunction.

Viagra’s effectiveness depends on its ability to restore blood flow to the vessels involved in the erection process. However, without sexual arousal, it won't work, so users should have realistic expectations about its capabilities.

If you want to read the full article, follow this link: Does Viagra actually work?.