A great herbal formula that I found years ago is equal parts of Peppermint Leaf, Yarrow Flowers, Elder Flowers. It is frequently called "EPY Fever." This is taken in the form of a tea/infusion and when fever is present taken continually until it is abated (by sipping regularly.) It is a powerful stimulant/blood cleanser and reduces fever quickly. It strengthens the body to fight off flu and it's effects. It is safe with kids too and this is the primary reason I was searching for it. There was a book in print around 20 years ago titled "THE A B C HERBAL" and it was put together by parents and is loaded with great remedies for kids. :0)