Again and again, there are currently delivery problems with drugs. A German article re. this topic:
It is time to consult Mother Nature. Unfortunately, much knowledge about our old natural medicine has been lost. Of course we should try to find the information again.
A very interesting document comes from the Schola Medica Salernitana, which initiated the beginning of modern medicine with herbs (modern at that time) in Europe
https://en.wikipedia.org/wiki/Schola_Medica_Salernitana
However, I would be interested in the healing methods of the Celts, because they used the herbs growing in our country (welll in Europe). The Scola Medica Salernitana is a place where to start. By the way, Hildegard von Bingen’s knowledge was based precisely on this “school”.