Antiflu 75 mg Capsule contains a class of antiviral medication, oseltamivir, which is used to treat viral infections. It plays a vital role in treating symptoms caused by the influenza virus. It is used to treat cough, stuffy nose, sore throat, chills/fevers, and tiredness. The flu is caused by the influenza virus, which infects the lungs, throat, and nose. Influenza or flu is produced by a virus that causes respiratory disease. It is highly infectious and easily spreads through the sneezes and coughs of an infected person. Influenza can be transmitted easily through touch.