Polyporus (Polyporus umbellatus)
Synopsis of polyporus
Polyporus umbellatus, commonly known simply as Polyporus or “Zhu Ling” in Traditional Chinese Medicine (TCM), is a medicinal mushroom that grows in clustered, umbrella-like formations at the base of hardwood trees. Native to China, Japan, and parts of Europe, Polyporus is not widely consumed as food but is highly valued for its diuretic, immune-modulating, anti-inflammatory, and antitumor properties.
The mushroom’s therapeutic activity is attributed to its high content of polysaccharides, especially beta-glucans, along with ergosterol, lectins, and other bioactive compounds. Polyporus is best known in herbal medicine for its ability to promote urination without harming vital fluids, making it particularly useful in cases of water retention, edema, and urinary tract infections. It is also believed to help drain dampness and support the spleen and kidneys, according to TCM theory.
Modern studies suggest that Polyporus may stimulate immune system function, enhance natural killer (NK) cell activity, and inhibit the proliferation of certain cancer cells. It has shown promise in bladder and kidney health, and research also indicates hepatoprotective and antioxidant actions. It is typically consumed in the form of decoctions, powders, capsules, or incorporated into multi-mushroom formulas.
Historical Use in Medicine:
Polyporus has been used for over 2,000 years in Traditional Chinese Medicine, where it is classified as a diuretic and dampness-draining herb. It is featured in classical TCM texts such as the Shennong Ben Cao Jing and later compilations like the Compendium of Materia Medica. In these traditions, it is used for conditions like difficulty urinating, edema, urinary tract infections, and cloudy urine, often combined with herbs like Poria (Fu Ling), Alisma (Ze Xie), and Plantain seed (Che Qian Zi) in complex formulas.
Polyporus was particularly valued for its ability to treat water metabolism issues without weakening the body, distinguishing it from harsher diuretics. It was also used in cases of jaundice, diarrhea, and damp-heat syndromes.
In Japanese Kampo medicine, Polyporus is also used in similar formulations, primarily to support kidney and bladder function and to reduce water retention associated with lower abdominal bloating or puffiness.
While lesser known in Western herbalism, interest in Polyporus has increased due to the global rise of medicinal mushroom use. Today, it is included in integrative and functional medicine protocols for immune enhancement, lymphatic drainage, and supporting detoxification pathways, reinforcing its long history as a natural agent for clearing internal “dampness” and maintaining fluid balance.
Polyporus is used for these health conditions
Cancer (natural therapy for) (Scientific)
Cancer Treatment (reducing side effects) (Scientific)
Infection (Traditional)
Inflammation (Traditional)
Liver Detoxification (Traditional)
Lymph Nodes or Glands (swollen) (Traditional)
Wounds and Sores (Traditional)
polyporus is used to support these body systems
Bladder (Traditional)
Blood (Traditional)
Immune System (Traditional)
Kidneys (Traditional)
Lymphatics (Traditional)
Urinary System (Traditional)
