A composition for affecting one or more of influenza, inflammation, and immune system function, said composition comprising an extract prepared from Radix isatidis and an extract prepared from Flos Lonicerae. In alternative embodiments, the composition further comprises one or more of an extract prepared from Poria cocos(Schw.) Wolf and an extract prepared from Herba houttuyniae. Method for treating one or more of influenza, inflammation by administering a patient a therapeutically effective amount of the above composition.
