Some of the best ways to treat a toddler's flu include getting plenty of rest, staying hydrated by drinking plenty of liquids and using acetaminophen or ibuprofen to lower a fever, according to WebMD. If congestion is an issue, a nasal bulb can also be used to clear mucus.
If a child is having difficulty breathing, has bluish or gray skin, has a seizure or shows signs of dehydration, medical treatment is necessary, according to WebMD. Some chronic health conditions such as diabetes, asthma, a lung disease or a heart condition can put a child at greater risk for complications, and a doctor should be consulted if any of these apply. Antibiotics are ineffective against the flu, and aspirin should never be given to children.