Four Thieves Vinegar is a general healing recipe that can be safely drunk and it also works great as a household disinfectant all the while cleansing away those energy nasties. Great to keep away and shorten flu, cold, viruses, and infections of all sorts.
Anything can be a "healing" potion, even chicken soup! That was my mother's way of healing me, through food!
But if you are discussing herbal healing in the form of a medicinal panacea (cure all) it isn't one fits all. You need to research the problem and then the associated natural cures.