The flu is caused by a virus, not bacteria. It can make you feel sick with symptoms such as fever, cough, sore throat, and body aches. Since taking Tamiflu is not in the picture anymore, it is vital that you take good rest, drink lots of water, and take pain relievers like acetaminophen or ibuprofen to help get rid of the symptoms. These help to relieve illness and severe pain. Make sure to stay at home and avoid infecting other people with flu.