8. Quercetin
Finally, this flavonoid has been shown to fight the HFM virus as well. What is unique about this herb is that you are able to use it in a couple of different ways. You can get a high-quality supplement that has all the potent power of Quercetin, or you can find it in many of the foods out there.
Unfortunately, it can be difficult to eat many of these foods if you have mouth sores that are associated with HFM, but just in case you are able to eat with no problems, you can find this flavonoid in cherries, blackberries, apples, peppers, cruciferous vegetables, leafy vegetables, and sage just name a few. For those that are not able to eat these foods which can be quite harsh when you have mouth sores associated with HFM, you can make a tea out of lemon balm and add this particular supplement.