The drug, known as Oseltamivir Phosphate, had annual tablet sales of approximately USD 518 million in the US, making it one of the biggest generics in the market.
The dosages that have been launched are 30 mg, 45 mg, and 75 mg.
Tamiflu is indicated for the treatment of acute, uncomplicated influenza of both A and B varieties in patients who are at least 2 weeks of age and have shown flu symptoms for 48 hours or less.
It can also be used as a preventive medicine in patients 1 year and older. It is often used at times of widespread outbreaks of flu, including bird flu.
Lupin is a pharmaceutical manufacturer based in India. It is 7th largest generics pharmaceutical company by revenues.