Isatis (Woad Root)
Isatis tinctoria
A 'heat-clearing' TCM antiviral root/leaf (ban lan gen) used at the first sign of sore throat and colds.
Traditional use (tcm): A 'heat-clearing' TCM antiviral root/leaf (ban lan gen) used at the first sign of sore throat and colds.
A 'heat-clearing' TCM antiviral root/leaf (ban lan gen) used at the first sign of sore throat and colds.
Active constituents are under study; evidence ranges from traditional use to preliminary human trials.
- A 'heat-clearing' TCM antiviral root/leaf (ban lan gen) used at the first sign of sore throat and colds.
Evidence strength: preclinical.
- See the evidence level above
- Best short-term; can upset digestion.
- Pregnant/breastfeeding people without medical advice
Best short-term; can upset digestion.
May interact with prescription medications — review with a clinician if you take any.
Use caution in pregnancy, breastfeeding, for children, and with chronic disease unless cleared by a clinician.
Choose reputable, tested suppliers; correct identification is essential for wild-harvested plants.