Several plants and natural products have been investigated for possible effects on respiratory viruses. Some laboratory findings are interesting, but convincing evidence that an herb can destroy influenza viruses inside the human body is lacking.
It is also important to distinguish between supporting comfort during an illness and treating the infection itself.
Warm drinks may soothe an irritated throat. Adequate rest and hydration can help people manage symptoms. Honey may help relieve coughing in adults and children older than one year, but it is not an antiviral cure.
For people who are at increased risk of serious flu complications, prescription antiviral medication may be appropriate. According to the U.S. Centers for Disease Control and Prevention, these medicines work best when started within one to two days after symptoms begin, although later treatment may still help some severely ill or high-risk patients.
People experiencing difficulty breathing, chest pain, confusion, severe dehydration, or symptoms that improve and then return with worsening fever or cough should seek prompt medical attention.
