Traditional Uses: Traditionally used in East Asian medicine (China, Korea, Japan) as a “cooling” tea or decoction to clear heat, reduce fever, soothe sore throats, relieve headaches and eye inflammation (redness, swelling, blurred vision), and treat hypertension and common cold symptoms.
Potential Benefits: May exhibit antioxidant, anti-inflammatory, antimicrobial, neuroprotective, and antidiabetic properties in laboratory studies; preliminary human studies suggest potential to lower uric acid and improve knee function in osteoarthritis, though strong clinical evidence is lacking.
Warnings: Avoid if allergic to ragweed or other Asteraceae family plants (daisies, marigolds, chamomile) due to the risk of contact dermatitis, photosensitivity, or anaphylaxis; may interact with immunosuppressants (increasing drug levels) and CYP3A4/P-gp substrate drugs; avoid during pregnancy and breastfeeding due to potential uterine stimulation and lack of safety data.
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