Cenforce 200 which is also known as Viagra Black pill. This drug belongs to the PDE group of Sildenafil Citrate. Curiously both males and females use this medication instantly without any delay. It is best to take Cenforce 200 30 minutes to an hour before sexual activity, and its effects can last for up to four hours in your system after consumption. Take this tablet 30-60 minutes before your sexual intercourse.