Viagra and its main ingredient, sildenafil are medications known as PDE5 inhibitors. These drugs work to increase blood flow necessary for arousal when you're stimulated.

Teva sildenafil is a generic version of Viagra used to treat erectile ... They can determine if you’re a good candidate, ... Sildenafil needs to be taken a certain way to work properly, ...

Benefits of Viagra: What Does Sildenafil Do for Men? Plenty of claims have been made about the health benefits of Viagra for men. Sildenafil’s ability to increase blood flow makes the medication ...

Dosage. The amount of Viagra you take affects how long it stays in your system. The smallest available dose, 25 milligrams (mg), won’t last as long as the largest available dose, 100 mg.

Viagra’s European patent expires, so with the unbranded drug sildenafil available at a 93 per cent price drop, the NHS allows prescriptions for a wider range of cases of male impotence. 2017 ...

Among patients with heart failure with preserved ejection fraction (a measure of heart function), administration of sildenafil (commercially known as Viagra) for 24 weeks, compared with placebo ...