Germander or Teucrium species are rich in essential oils and contain up to 12% tannins. Also contains flavonoids, di-terpenes, iridoid monoterpene and traces of alkaloids. Germander is used in folk medicine for the treatment of diarrhoea, cough, jaundice and abdominal pain. Scientific study of Teucrium shows that it has cytotoxic and antispasmodic effects.
Germander also reduces stomach acid, and can be used to improve general immunity. Bile, liver and pancreas are fine if you take this tea regularly. There is a lot of vitamin C and other substances that have strong bactericidal properties.