Hi, viral fever are generally self limiting with symptomatic management. Antibiotics don't treat viral infections, but there are a few antiviral drugs used to treat certain viral infections. However, the best treatment for most minor illnesses caused by viruses is often rest and plenty of fluids.. Rest. You need rest to recover, and activity can raise your body temperature.Stay cool. Dress in light clothing, keep the room temperature cool and sleep with only a sheet or light blanket...