Clear Heat and Detoxify: Honeysuckle
Honeysuckle, officially known as "Jin Yin Hua," appears under the entry "Ren Dong" in *Ben Cao Gang Mu*. It refers to the flower buds of a semi-evergreen climbing shrub, Lonicera japonica. Flowers bloom in early summer, paired in leaf axils, initially white, turning yellow, creating a striking contrast of yellow and white—hence the name "Honeysuckle." Its leaves remain green through winter, hence the name "Ren Dong" (meaning "enduring winter").
Due to strong adaptability, it is widely cultivated across China. Harvest occurs between May and June, picking unopened flower buds. Optimal harvesting time is before sunrise, when fragrance is strongest. After picking, spread on straw mats and sun-dry on the same day.
Honeysuckle has a sweet and cold nature, capable of clearing heat and detoxifying. Used to treat upper respiratory tract infections, influenza, tonsillitis, acute mastitis, lobar pneumonia, bacillary dysentery, acute appendicitis, boils, abscesses, etc. Dosage ranges from 10 to 100 grams.
The reason honeysuckle clears heat and detoxifies lies in its broad-spectrum antibacterial properties: it inhibits Staphylococcus aureus, Streptococcus albus, alpha-hemolytic streptococcus, Salmonella typhi, Shigella, Mycobacterium tuberculosis, and pneumococcus.
The most representative formula is "Yin Qiao San" (Honeysuckle and Forsythia Powder), used for wind-heat exterior syndromes: each 12 grams honeysuckle and forsythia, each 10 grams mint, schizonepeta, great burdock seed, platycodon root, each 6 grams bamboo leaf, licorice, fermented soybean, and plantain root. Grind into coarse powder; take 18 grams per dose, decoct in water. The commercially available "Yin Qiao Jie Du Pian" is based on this formula.
Combined with dandelion, it treats acute simple appendicitis; with safflower, treats gynecological inflammation; with chrysanthemum, clears heat and disperses wind.
Honeysuckle can also be made into tea: take 5–10 flowers, rinse first, then steep in boiling water for 15–30 minutes. This yields a light, fragrant tea with cooling and heat-clearing effects. Drinking one cup daily in spring and summer prevents internal heat and external infection. However, due to its cold nature, long-term use is not recommended, and individuals with yang deficiency or weak constitution should use cautiously.
To moderate honeysuckle's cold nature, it may be stir-fried before use; if charred, it becomes cooling and hemostatic, suitable for other medicinal applications.<Honeysuckle>