There is no cure—despite fake remedies sold on the internet. Once someone is already infected, Tamiflu (oseltamivir) and Relenza (zanamivir) can help relieve the severity of disease if taken within 48 hours. | There is no cure—despite fake remedies sold on the internet. Once someone is already infected, Tamiflu (oseltamivir) and Relenza (zanamivir) can help relieve the severity of disease if taken within 48 hours. |