Woad
Isatis tinctoria
The blue-dye plant whose root/leaf (ban lan gen in TCM) is used for sore throats and viral colds.
Traditional use (european-folk, tcm): The blue-dye plant whose root/leaf (ban lan gen in TCM) is used for sore throats and viral colds.
The blue-dye plant whose root/leaf (ban lan gen in TCM) is used for sore throats and viral colds.
Active constituents are under study; evidence ranges from traditional use to preliminary human trials.
- The blue-dye plant whose root/leaf (ban lan gen in TCM) is used for sore throats and viral colds.
Evidence strength: traditional use.
- See the evidence level above
- Generally mild short-term; traditional cooling antiviral.
- Pregnant/breastfeeding people without medical advice
Generally mild short-term; traditional cooling antiviral.
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.