Sildenafil lowers blood pressure in the lungs so the heart doesn’t have to work as hard to pump blood away. In a study comparing the effects of sildenafil and bosentan (a popular drug for managing PAH ...

Viagra is a helpful medication for men dealing with erection issues. If you’re considering Viagra, you might be wondering how long it takes to work and what you can expect. Viagra works by increasing ...

This story was reviewed by Mike Bohl, MD. In the ‘80s, researchers set out to test a medication called sildenafil citrate for treating high blood pressure and ...

Why Is Viagra Not Working for Me? Viagra is an effective treatment for ED for many men, but it’s not a guarantee. Here’s why you may find Viagra is not working for you. You’re Not Using Viagra ...

A new study finds sildenafil, the active ingredient in Viagra, may improve symptoms of Leigh syndrome, a rare, often fatal childhood disorder. Early findings show better muscle strength, fewer ...