I work as a contractor for the company that makes Tamiflu. If you check it out the avian (bird) flu epidimic in Asia was curbed by the use of it. It will work on most type A virus so it is not restricted to flu. The main reason it has not been fully marketed has been a matter of supply. All of the reserve was shipped to Asia. Even though it has been on the market, production would not meet demand. Many doctors are still not aware of the product so you may have to have your doctor look it up. There is continued pressure from the govt. to increase production since an epidemic could be disasterous but the production process is long and costly and is requiring facility expansion.