If you are thinking about taking Viagra or Cenforce to treat your ED, there are a few things you should know first. Viagra and Cenforce are not for everyone, so it is important to talk to your doctor to see if they are right for you. Additionally, Viagra and Cenforce can interact with other medications, so be sure to tell your doctor about all the medications you are taking. Finally, be sure to follow all directions on the Viagra or Cenforce label carefully.