Viagra is used to treat erection problems, because studies reveal that it help 88 % of the men. Pills can help the men to have long-lasting erection when they are sexually thrilled. Viagra can’t help you to have an erection when you take it, but it helps the men with problems of erection to have one of it when they are sexually thrilled. Not everyone should take Viagra. If you have a cardiovascular problem such as an abnormal heart rate, a coronary insufficiency, an angina or low blood pressure, then you shouldn’t take this medicine.

Viagra dilates vessels blood, that’s the reason it allows to improve the circulation of the blood in penis, what spurs erection in return. It is recommended to take 50 mg of Viagra. It is possible to take Viagra in different proportions: 100mg, 50mg and 25mg. The patient should take this medicine one hour before sexual activity, and the effect comes during about four hours. It is necessary to take the pills on empty stomach, and food with strong content of grease can constitute an obstacle its effectiveness.