![]() ![]() It’s worth noting that Viagra only affects blood flow, meaning it won’t have any effect on sexual arousal or desire.Ĭontrary to popular belief, Viagra also doesn’t cause spontaneous erections, or erections that occur without any sexual stimulation. Sildenafil inhibits the effects of PDE5, helping to open up your blood vessels and promote optimal blood circulation. The enzyme phosphodiesterase 5 (PDE5) plays a key role in regulating blood flow through the blood vessels that supply your penis. As blood flows to your penis, the erectile tissue expands and becomes firm, creating an erection. This causes the blood vessels that supply your penis to expand, allowing more blood to flow to the erectile tissue. When you feel aroused, your nervous system sends a signal to your corpora cavernosa - a pair of elongated bodies of erectile tissue located inside your penis. Healthy erections are all about blood flow. ![]() ![]() Viagra belongs to a class of drugs referred to as PDE5 inhibitors, which work by increasing the flow of blood to certain parts of your body, including your penis. Most of the time, these issues are fixable, either by making changes to the way you use Viagra or identifying and treating other factors that may be contributing to your sexual function issues.īelow, we’ve explained why Viagra and other ED drugs, like Cialis® ( tadalafil), sometimes don’t work as intended, as well as what you can do if you still find it difficult to get and stay hard after using Viagra.īefore we get into why Viagra sometimes doesn’t work for the treatment of erectile dysfunction, it’s important to go over how Viagra and similar medications actually work within your body. In fact, some men who take Viagra still experience erectile dysfunction and other sexual performance issues even after using their medication. ![]() However, Viagra and other ED medications aren’t 100 percent effective. Used at a normal dose on an empty stomach, Viagra usually starts to work within one hour and makes getting and maintaining an erection easier. Sildenafil, the active ingredient in Viagra, is also used to manage pulmonary arterial hypertension (PAH), a form of high blood pressure that can affect the lungs. It’s also occasionally used to treat other male sexual performance issues, including premature ejaculation (PE). Viagra®, which contains the active ingredient sildenafil, is one of the most popular medications for erectile dysfunction (ED). ![]()
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