Antiviral drugs for influenza are prescription drugs (pills, liquids, inhaled powders or intravenous solutions) that fight influenza viruses in the body. Antiviral drugs are not sold over-the-counter, patients can only buy them with a doctor's prescription. Antiviral drugs are completely different from antibiotics - drugs that fight bacterial infections. However, do not be subjective because there is a cure, the best way to protect your health is to actively prevent influenza viruses.