Ash Tree Bark Pieces

Ash Tree Bark Pieces (Fraxinus rhynchophylla) are the dried bark strips of the ash tree traditionally used in Traditional Chinese Medicine (TCM) under the name Qín Pí (秦皮). This herb is known for its strong heat-clearing, damp-drying, and toxin-resolving properties, particularly in conditions involving damp-heat in the intestines, eyes, or lower burner. Its nature is bitter, astringent, and cold, giving it a focused ability to clear excess heat, dry dampness, and restrain leakage.

In TCM, Qin Pi enters the Liver, Gallbladder, and Large Intestine channels, where it is traditionally used for damp-heat diarrhea, dysentery, abdominal pain, and tenesmus, as well as for red, swollen, painful eyes and excessive tearing caused by Liver heat. Its astringent quality helps stop chronic diarrhea, while its cold bitterness clears the underlying heat that drives inflammation and fluid loss.

Ash Tree Bark is also valued for eye health, frequently included in formulas for conjunctivitis, photophobia, blurred vision, and ocular swelling, especially when symptoms are aggravated by heat or wind-heat. Its ability to clear Liver heat while preserving fluids makes it particularly useful when irritation and dryness coexist.

In folk practice, Fraxinus bark is used in cooling decoctions and external washes for skin inflammation, sores, itching, and damp-heat lesions, supporting its traditional role in clearing heat toxin and soothing irritated tissue.

Modern research shows that Fraxinus rhynchophylla contains coumarins such as fraxin and fraxetin, flavonoids, tannins, and anti-inflammatory compounds with documented antibacterial, antidiarrheal, anti-inflammatory, and antioxidant effects. These constituents support its classical applications for intestinal infections, inflammatory eye conditions, and damp-heat syndromes.

Each batch of Ash Tree Bark Pieces (Fraxinus rhynchophylla) is carefully harvested and dried to preserve its fibrous texture, pale inner bark, and potent bitter-cooling profile. When decocted, it produces a bitter, cooling, astringent infusion traditionally used to clear heat, dry dampness, stop diarrhea, calm eye inflammation, and resolve toxin-related irritation.