Cenforce 100mg the drug works by increasing blood flow to the penile region of the body. As sildenafil, that drug helps in changing the sexual. It helps in good erection. The drug belongs to a class of drugs called phosphodiesterase type 5 (PDE 5) inhibitors. He is using that medicine to improve his life. Take it about an hour before any sexual activity. However, the working time varies from person to person. It lasts a long time in medicine. That drug is more likely to be used by most men.