How Does Viagra Work to Treat ED?
Erectile dysfunction (ED) is a type of sexual dysfunction that affects a man’s ability to get and keep an erection. ED can seriously interfere with a healthy sex life. Psychological stressors like depression, anxiety, and relationship problems are often to blame for erectile dysfunction. But physical health issues like high cholesterol and diabetes can affect the brain, blood vessels, and nerves in the penis, increasing your risk of ED.
In healthy men, an erection is achieved when sexual stimulation causes mental excitement, which then increases blood flow to the penis. Because this blood flow is blocked for many men with ED, Viagra works by helping the blood vessels within the penis relax, improving blood flow and erection strength.
Viagra (sildenafil) is a phosphodiesterase PDE5 inhibitor—a type of vasodilator. Vasodilators can relax the blood vessels in the penis, but it isn’t a permanent cure for erectile dysfunction. Instead, Viagra needs to be taken prior to sexual activity, making it a short-term solution. Depending on approval by your doctor, a Viagra pill may be taken every day. The effects of Viagra last two to three hours on average. 1
Side Effects of Viagra
There are many upsides to taking Viagra. In addition to improving blood flow and allowing for an erection strong enough for sexual intercourse, Viagra may be taken up to four hours before sex, which gives you a wide window on a romantic evening (or morning). But as with any medication, it is important to know the possible side effects. Some of the more common side effect of Viagra include:
- Blood-pressure drop
- Eye blurriness or vision problems
- Flushing
- Headache
- Indigestion (dyspepsia)
- Insomnia
- Muscle pain
- Nasal congestion
- Sudden hearing loss
If you have a pre-existing condition such as heart disease, high blood pressure, diabetes, or high cholesterol, sudden vision loss may occur. If you are at risk for stroke, , you should tell your doctor before beginning Viagra. You should also consult your healthcare provider if your erection becomes painful or it lasts longer than four hours. Viagra may not be suitable for people with liver, kidney, or heart conditions. Finally, Viagra may interact with certain antibiotics, antifungals, herbal remedies, and HIV medicines, so always disclose all of your current medications to your doctor before taking this ED drug. 2