In your subsequent comment you add the important point - this is Germany. Having lived both in Germany and (now) in China, i can confirm that both of these countries have a problem with quack medicine. I've never been anywhere else in the world where you need to argue with pharmacists to persuade them to sell you evidence-based medicine.

In China there is some historical reason for it - Mao needed something to placate the peasants while trying to figure out how to provide healthcare to rural areas[0]. Unfortunately the government is still trying to figure that out.

I don't know what the history is in Germany that caused it to be the way it is.

[0] https://respectfulinsolence.com/2019/05/29/mao-triumphant/