Since viruses inflict these miseries, antibiotics will not help, as they are only effective against bacteria. The best treatment for the flu is to keep warm, get lots of rest, and drink plenty of fluids. Liquids help prevent the respiratory tract from drying out, which otherwise can lead to secondary problems. Keeping the air moist through hot showers, humidifiers, or vaporizers can also help. Nasal sprays can only be used for three consecutive days.
Prescription drugs are available to lessen the severity and length of the flu.
However, they are only effective if within 48 hours of the first sign of the flu. To relieve a dry, hacking cough, codeine is an effective prescription medicine. Most cases of the flu do not require a physician's attention.