Why Was Sildenafil Citrate Developed?
Pfizer originally developed Sildenafil Citrate, also known as Viagra®, as a heart medication. It noticeably improved blood flow by relaxing the arteries. A marked increase of blood flow to the male genitals was also apparent. It was developed into a convenient, discreet pill you take only when you want to have sex and is used as a breakthrough treatment for male erectile dysfunction.