Just before Christmas, the U.S. Food and Drug Administration expanded the use of Tamiflu, the flu drug, to children as young as 2 weeks old who have shown flu symptoms for no more than two days.
The drug is currently approved as both a flu treatment and preventative flu drug for children ages 1 and older, and adults. It claims to help lessen the length and severity of the flu.
Tamiflu was approved in 1999 and is distributed in the United States by Genentech, part of Roche. Its most common side effects include vomiting and diarrhea.
Tamiflu is approved by regulators worldwide but some researchers claim there is little evidence it works and have asked Roche to hand over data so they can study its effectiveness.