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Botanical illustration of Isatis Root
MedicinalSourced entry

Isatis Root

Isatis indigotica

Ban lan gen, a Chinese medicine root used for centuries for flu and viral infections, fever, cough and sore throat. Its compounds acted against viruses in lab studies.

What is Isatis Root?

Plant family
Brassicaceae, the mustard and cabbage family
Parts used
The dried root (ban lan gen); the leaves are a separate medicine (da qing ye)
Genus
Isatis
Species
indigotica

Also called

Isatidis Radix, Radix Isatidis, Satis Root, Isatis

Traditional names

Ban Lan Gen, Banlangen

Traditionally used for

  • Flu and viral infections (traditional)
  • Fever (traditional)
  • Sore throat and cough (traditional)

Traditionally described as

  • Acted against viruses (in lab studies)

Health topics

Where Isatis Root appears in symptom search, and why. Being listed doesn't mean it's a proven treatment.

  • Colds and Nasal Congestion

    A traditional Chinese remedy for flu and viral infections; acted against flu viruses in lab studies. Not tested on its own in trials.

  • Sore Throat

    Traditionally used for sore throat and cough from "lung heat". Not tested on its own in trials.

Traditions that use it

  • Traditional Chinese Medicine

    Called ban lan gen; used for centuries to "clear toxins", for flu and other viral infections, fever, cough and sore throat.

What does the research say?

Traditional use

These are traditional uses, not proven treatments.

  • Ban lan gen has been used in Chinese medicine for centuries as both food and medicine. It's described as bitter and cool, and is used to "clear toxins". It's often used for:

    • Flu and other viral infections
    • Fever and dizziness
    • Cough and sore throat from "lung heat"

    At least 39 Chinese patent medicines contain it or the leaves of the same plant.[1]

Laboratory & animal research

Lab and animal results show what might be worth studying in people. They don't show that the herb has these effects in humans.

  • In lab and animal studies, its compounds acted against several viruses, including flu, respiratory syncytial virus (RSV) and herpes simplex, partly by affecting the immune system and inflammation. These are lab and animal results.[1]

Sources

  1. [1] Isatidis Radix and Isatidis Folium: A systematic review on ethnopharmacology, phytochemistry and pharmacology · DOI: 10.1016/j.jep.2021.114648Peer-reviewed study

This information is educational and traditional in nature, and is not a substitute for professional medical advice.