About 50 % of all men over 40 years old experience ED. Erectile Dysfunction happens when not enough blood flows to the penis, as a result, man can't maintain erection. You can improve your erection with medicine called Viagra.
Viagra can improve your sexual activity by prolonging erection for 4 hours. Viagra helps to improve erection. With Viagra you can be satisfied with your sexual life. Viagra works for 4 hours, when you are in sexual activity. After this activity erection goes away. Viagra works from the first time but sometimes your organism need more time. So, don't hurry because erection can be improved with practice.
Viagra doesn't protect you and your partner from sexually transmitted diseases.
