Coumarins are a subgroup of lactones and include aesculatine, citropten, dinydra-coumarin, heniarin, khellin, and umbelliforone. Coumarins can be found in dill, parsley and tarragon. Fourocoumarins can be found in citrus fruits such as grapefruit, lemon, and more.
Links to Plants Containing Coumarin
The listings of research below represent a compilation of scientific articles found on the topic, with a very brief overview description of each article/study. This compilation of research articles does not necessarily imply that there are adequate results to demonstrate safe and/or effective human use of any herb listed.
ANTIMICROBIAL / ANTIVIRAL
- Leaf extracts of Petroselinum crispum (parsley) and Ruta graveolens (rue) showed the highest antimicrobial activity, potentially related to coumarin content. From: Ojala, T., Remes, S., Haansuu, P., Vuorela, H., Hiltunen, R., Haahtela, K., & Vuorela, P. (2000). Antimicrobial activity of some coumarin containing herbal plants growing in Finland. Journal of ethnopharmacology, 73(1), 299-305.
- Coumarins from angelica root extracts showed activity against the herpes simplex virus – 1 in vitro. From: Rajtar, B., Skalicka-Woźniak, K., Świątek, Ł., Stec, A., Boguszewska, A., & Polz-Dacewicz, M. (2017). Antiviral effect of compounds derived from Angelica archangelica L. on Herpes simplex virus-1 and Coxsackievirus B3 infections. Food and Chemical Toxicology, 109, 1026-1031.
By: Kathy Sadowski