Viagra has helped more than 20 million men worldwide treat impotence successfully and enjoy a better sex life. It uses the active ingredient sildenafil citrate to stimulate blood circulation in your penis, making it much easier for you to achieve and maintain an erection when aroused. Viagra can start to work in as little as 30 minutes after taking it and the effects last for up to four hours.
Pfizer Viagra is available in three different dosage strengths, 25mg, 50mg and 100mg, allowing for the treatment of varying degrees of erectile dysfunction. Genuine Viagraâs effectiveness has been proven in many different clinical studies; on average 62% of men taking the 25mg dose reported that it had improved their erection. 74% of men taking the 50mg were found to have experienced the positive effects while 85% of men taking the 100mg dose reported that Viagra had helped them to achieve and sustain a better erection.
