Tamiflu

Oseltamivir phosphate (Tamiflu) is in a new group of antiviral drugs called neuraminidase inhibitors. As the flu virus takes hold in the body, it forms new copies of itself and spreads from cell to cell. Neuraminidase inhibitors prevent the release of virus copies from the infected cells. Oseltamivir is a pro-drug which through metabolisation transforms into its active form.

Indications: Tamiflu is mainly used in treating virus influenza A and B ( common cold, stomach flu, or other respiratory illness not caused by influenza virus)

Contraindications and cautions: If you have kidney disease, the doctor may have to cut your daily dose of Tamiflu in half. The effectiveness of Tamiflu has not been established for people with weakened immune systems. The drug has not been studied in people with liver disease.
Tamiflu works only on the flu virus. It won't stop bacterial infections that may have flu-like symptoms or bacterial infections that may develop while you have the flu. If your symptoms persist, check with your doctor.