1. Tamiflu is a brand name for oseltamivir phosphate. It is an antiviral drug that is used to fight viruses.
Notes: In particular, Tamiflu fights influenza viruses. When a person gets the flu, Tamiflu can make the sickness last a shorter time and be less severe. It does not cure the flu; there is no cure for the flu. Tamiflu is not a vaccine or an antibiotic. Tamiflu inhibits the work of neuraminidase, a protein on the flu virus which lets viruses move from one cell to another. Thus, Tamiflu is called a " neuraminidase inhibitor." In the absence of a vaccine for a new strain of flu, antivirals such as Tamiflu and Relenza are considered the best available pharmaceutical tools.