Rimantadine is an antiviral medication. It blocks the actions of viruses in your body. Rimantadine is used to treat and prevent influenza A (a viral infection) in adults. It is also used to prevent influenza A in children. There may be some flu seasons during which rimantadine is not recommended because certain flu strains may be resistant to this drug. Rimantadine may also be used for other purposes not listed in this medication guide.
Flumadine is used in the prevention and treatment of certain types of flu in adults. It can also be used in children, if the doctor allows it. Flumadine is an antivirus agent; it is not known exactly how it works. However, it is thought that it blocks the reproduction of the virus.