Contains coumarin, a benzopyrone, which is carcinogenic but not genotoxic. This is carcinogenic in rats causing adenomas and carcinomas of liver, bileducts; adenomas of the kidneys. In mice it causes adenomas of the liver and adenomas and carcinomas of the lungs.

van den Berg, S.J.P.L., Restani, et al., P.. (2011). Levels of Genotoxic and Carcinogenic Compounds in Plant Food Supplements and Associated Risk Assessment. Food and Nutrition Science 2: 989-1010. Link

Extensive drinking of herbal teas can lead to liver failure and blood clotting disorders.

Wink, Michael & Ben-Erik van Wyk (2008). Mind-Altering and Poisonous Plants of the World. Timber Press

Possibly toxic

Professor Anthony Dayan, 2022

Asperula odorata =Woodrooffe. Also Aspergula odorata

Gerard, J. (1975). The Herbal or General History of Plants. New York: Fascimile Dover Publications Inc . p. 1124

Put into wine it makes a man merry, and good for the heart and liver. Useful for wounds, 'as cruciate and other vulnerarie herbes do'

Gerard, J. (1975). The Herbal or General History of Plants. New York: Fascimile Dover Publications Inc . p1126

Asia-Temperate, Caucasus, North Caucasus

Asia-Temperate, Caucasus, Transcaucasus

Asia-Temperate, Middle Asia, Kazakhstan

Asia-Temperate, Siberia

Asia-Temperate, Western Asia, Turkey

Europe, Eastern Europe, Belarus

Europe, Eastern Europe, Baltic States

Europe, Eastern Europe, Northwest European Russia

Europe, Eastern Europe, South European Russia

Europe, Eastern Europe, Ukraine

Europe, Middle Europe, Austria

Europe, Middle Europe, Belgium

Europe, Middle Europe, Germany

Europe, Middle Europe, Hungary

Europe, Middle Europe, Poland

Europe, Middle Europe, Slovakia

Europe, Middle Europe, Switzerland

Europe, Northern Europe, Denmark

Europe, Northern Europe, Finland

Europe, Northern Europe, Great Britain

Europe, Northern Europe, Norway

Europe, Northern Europe, Sweden

Europe, Southeastern Europe, Albania

Europe, Southeastern Europe, Bulgaria

Europe, Southeastern Europe, Czech Republic

Europe, Southeastern Europe, Greece

Europe, Southeastern Europe, Italy

Europe, Southeastern Europe, Romania

Europe, Southeastern Europe, Yugoslavia

Europe, Southwestern Europe, France

Europe, Southwestern Europe, Spain