Hi @kenny48,

As you mentioned, Rooibos tea—also known as red bush tea or African red tea—is an herbal tea made with the leaves of Aspalathus linearis plant.
This plant is native to South Africa and like most teas, contains high levels of polyphenols that are thought to provide an array of health benefits. There are two many types of rooibos tea: red rooibos tea is oxidized and tastes similar to black and oolong tea; green rooibos is unoxidized and tastes more like green tea. Here are two articles I found, about Roobois tea and it’s interaction with medication:
https://www.sciencedirect.com/science/article/pii/S0254629914000726
https://www.medicalnewstoday.com/articles/323637.php
I realize you’ve only recently moved to Germany, but it would be best to consult a doctor about this. Would it be possible to order decaf. tea online?