Isatis tinctoria
TCM antiviral powerhouse — Ban Lan Gen is the most commonly used herb in China for sore throats and flu. During SARS and COVID, sales exploded. Contains indirubin (anti-leukemic compound). Also the source of blue woad dye.
Sign in and complete your health profile to see safety warnings personalized to your age, sex, medications, conditions, and allergies for this herb.
If you take any medications, review these interactions carefully.
Immunosuppressants.
Spleen deficiency (TCM) — very cold herb. Long-term use.
GI upset, diarrhea (very cold nature in TCM). Allergic reactions.
Pot with lid (non-aluminum), Strainer, Measuring spoon, Stove
Personalized Guidance
Our Herbal Support Finder matches you with herbs based on your wellness goals, health profile, and medications.
Some roots are very potent — follow specific dosing guidelines for individual herbs. Avoid decocting herbs with volatile oils (peppermint, chamomile) as you will lose the beneficial compounds.
Refrigerate and use within 48-72 hours. Can be gently reheated.
Herb grinder or pre-powdered herb, Empty vegetarian capsules (size 00 or 0), Capsule filling machine (optional but recommended), Small bowl, Scale (optional for precision)
Capsules bypass taste, which can be important — bitter taste stimulates digestion. For digestive herbs, teas or tinctures may be more effective. Always follow recommended dosing.
Store in airtight containers away from moisture. Use within 6-12 months for best potency.
Measuring spoon, Blender or cup for mixing
Start with smaller amounts and increase gradually. Powdered herbs are concentrated — measure carefully.
Store in airtight containers away from light and moisture. Use within 6-12 months.
