They achieve the same end result, but Viagra and other pills work a little differently than Invicorp. Both drugs can increase blood flow to your penis, but they do so in different ways.
Invicorp is a combination of two drugs that decrease blood flow away from your penis while increasing blood flow to your penis at the same time. On the other hand, Viagra is a PDE5 medication that relaxes blood vessels. This makes it possible for blood flow to increase in your penis and create an erection.