Benefits
Pyelonephritis + nephritis + urolithiasis diuretic (Wang 1964)
Wang et al. 1964 — clinical studies confirmed Polyporus umbellatus is effective DIURETIC without side effects for treatment of PYELONEPHRITIS, NEPHRITIS, and UROLOGIC CALCULI. Foundational TCM clinical evidence. Distinguishing aldosteronic mechanism — ergone has anti-aldosteronic diuretic effect (Yuan 2004).
Chronic hepatitis B systematic review (9 RCTs, 936 patients)
Systematic review of 9 randomized trials (936 patients) of Chinese herbs for CHRONIC HEPATITIS B. PUPS showed POSITIVE EFFECT on HBeAg clearance vs placebo (RR 3.06, 95% CI 1.13-8.29) + HBV DNA clearance vs non-specific treatment (RR 4.14, 95% CI 1.00-17.19). HONEST: overall evidence quality LOW — rigorous double-blind placebo-controlled trials still needed.
β-glucan (1-3) backbone (1-6) side chains 1.6×10⁵ Da
PUPS major component: β-GLUCAN with (1-3)-β-glucose BACKBONE + (1-6)-β-glucose SIDE CHAINS, MW ~1.6×10⁵ Da. Polyporus umbellatus extract 7572 originally developed for clinical use 1979, renamed PUPS 1983. Mechanism: distinguishing β-glucan structure among medicinal mushrooms. Foundation for immunomodulatory + antitumor effects.
Anti-aldosteronic diuretic (ergone mechanism)
Yuan et al. 2004 — ERGONE (compound from P. umbellatus) has ANTI-ALDOSTERONIC diuretic effect. Mechanism: blocks aldosterone (steroid hormone regulating sodium/potassium balance). Distinguishing diuretic mechanism — supports TCM 'drain dampness' indication via mineralocorticoid pathway.
Antitumor polysaccharide cachexia inhibition (Wu 1997)
Wu et al. 1997 — P. umbellatus polysaccharides INHIBITED CACHEXIA induced by toxohormone-L. Mechanism: anti-cachexic effect supporting integrative oncology context. Foundational anti-tumor + cancer-supportive mechanism.
Polyporusterone A/B antioxidant + anti-hemolytic (Sekiya 2005)
Sekiya et al. 2005 — Zhuling protected red blood cells from AAPH-induced hemolysis (50-1000 µg/ml dose-dependent). Active compounds: triterpene carboxylic acids POLYPORUSTERONE A + POLYPORUSTERONE B. Polyporusterone B significantly STRONGER than A. 150 mg ingestion increased plasma free-radical scavenging in rats.
HONEST TCM contraindications + Yin deficiency caution
HONEST framing: avoid in YIN DEFICIENCY with fluid depletion (dry mouth, scanty urine) — Polyporus may exacerbate fluid loss. AVOID LONG-TERM USE in non-dampness patterns. Modern Western clinical trials limited beyond TCM combination formulas. Most evidence in combination with Wuling San (Five-Ingredient Powder with Poria).
Mechanism of action
Anti-aldosteronic diuretic (ergone)
Ergone blocks aldosterone (sodium/potassium regulating steroid hormone). Mechanism: distinguishing diuretic pathway via mineralocorticoid antagonism. Foundation for TCM 'drain dampness' indication.
PUPS β-glucan (1-3)/(1-6) immunomodulation
PUPS β-glucan with (1-3) backbone + (1-6) side chains, MW ~1.6×10⁵ Da. Mechanism: pattern recognition receptor (Dectin-1) binding → immune activation. Foundation for immunomodulatory + antitumor effects.
Polyporusterone A/B antioxidant triterpenes
Polyporusterone A + B triterpene carboxylic acids — protect red blood cells from AAPH-induced hemolysis dose-dependently. Polyporusterone B stronger than A. Mechanism: free radical scavenging.
Anti-cachexic polysaccharide
PUPS inhibits cachexia induced by toxohormone-L (Wu 1997). Mechanism: anti-cachexic effect supporting integrative oncology context.
Renal fibrosis protection (PMID 33679418)
Polyporus umbellatus protects against RENAL FIBROSIS by regulating intrarenal fatty acyl metabolites (PMID 33679418). Mechanism: lipid metabolism modulation in renal tissue. Foundational kidney protective mechanism.
Radio- and chemoprotective effects
Zhu-Ling Mushroom shows radio- and chemoprotective effects in human cultured cells + mice. Mechanism: cellular protection during oncologic radiotherapy/chemotherapy. Integrative oncology context.
Clinical trials
Clinical studies (Wang et al. 1964 — foundational TCM clinical research).
Patients with pyelonephritis, nephritis, urologic calculi.
Polyporus umbellatus is effective DIURETIC WITHOUT SIDE EFFECTS for treatment of pyelonephritis + nephritis + urologic calculi. Foundational TCM clinical evidence supporting traditional kidney/urinary tract indications. Distinguishing safety profile — no side effects reported.
Systematic review of 9 randomized trials.
936 patients with chronic hepatitis B in 9 RCTs of Chinese herbs including PUPS.
PUPS showed positive effect on: (1) HBeAg clearance vs placebo: RR 3.06, 95% CI 1.13-8.29; (2) HBV DNA clearance vs non-specific treatment: RR 4.14, 95% CI 1.00-17.19. HONEST framing: overall evidence quality LOW — rigorous double-blind placebo-controlled trials still needed. Foundational hepatitis B antiviral + immunomodulation evidence base.
Randomized trial (Xiong LL 1993, Zhongguo Zhong Xi Yi Jie He Za Zhi 13:533-535).
90 patients with chronic hepatitis B. Group I: Dan Shen + PUPS. Group II: Dan Shen alone. Group III: PUPS alone.
Three-arm RCT comparing Dan Shen + PUPS combination vs each alone in chronic hepatitis B. Foundation for Dan Shen + PUPS combination context. Combination context evidence — supports integrative TCM formulation approach.
About this ingredient
POLYPORUS UMBELLATUS (Pers.) Fries — formerly Grifola umbellata. Polyporaceae family. TCM MEDICINAL MUSHROOM with Chinese name 'ZHU LING' (Pig's Truffle). Sclerotium grows on roots of beeches/oaks. First described in Shen Nong Ben Cao Jing as having DIURETIC ACTION for edema + dysuria. Active compounds: PUPS (Polyporus Umbellatus Polysaccharide — β-glucan with (1-3) backbone + (1-6) side chains, MW ~1.6×10⁵ Da), ERGONE, POLYPORUSTERONE A + B (triterpene carboxylic acids), STEROIDS. Polyporus umbellatus extract 7572 originally developed for clinical use 1979, renamed PUPS 1983. PIVOTAL CLINICAL EVIDENCE: WANG et al. 1964 — clinical studies confirmed Polyporus umbellatus is effective DIURETIC WITHOUT SIDE EFFECTS for PYELONEPHRITIS + NEPHRITIS + UROLOGIC CALCULI. Foundational TCM clinical evidence. CHRONIC HEPATITIS B SYSTEMATIC REVIEW of 9 RCTs (936 patients) — PUPS showed positive HBeAg clearance vs placebo (RR 3.06, 95% CI 1.13-8.29) + HBV DNA clearance vs non-specific treatment (RR 4.14, 95% CI 1.00-17.19). HONEST: overall evidence quality LOW — rigorous double-blind placebo-controlled trials still needed. XIONG 1993 (Zhongguo Zhong Xi Yi Jie He Za Zhi 13:533-535) — 90-pt RCT comparing Dan Shen + PUPS vs each alone in chronic HBV. YUAN et al. 2004 — ERGONE has ANTI-ALDOSTERONIC diuretic effect (blocks aldosterone, sodium/potassium regulating steroid hormone). WU et al. 1997 — PUPS inhibits cachexia induced by toxohormone-L. SEKIYA et al. 2005 — Zhuling protected red blood cells from AAPH-induced hemolysis (50-1000 µg/ml dose-dependent); polyporusterone A + B free radical scavengers; polyporusterone B significantly stronger than A; 150 mg ingestion increased plasma free-radical scavenging in rats. PMID 33679418 — protects against RENAL FIBROSIS by regulating intrarenal fatty acyl metabolites. RADIO + CHEMOPROTECTIVE effects in human cultured cells + mice.
MECHANISMS: ANTI-ALDOSTERONIC DIURETIC (ergone — distinguishing pathway via mineralocorticoid antagonism); PUPS β-GLUCAN (1-3)/(1-6) IMMUNOMODULATION (Dectin-1 binding → immune activation); POLYPORUSTERONE A/B antioxidant TRITERPENES (free radical scavenging; B stronger than A); ANTI-CACHEXIC polysaccharide; RENAL FIBROSIS PROTECTION (lipid metabolism modulation); RADIO + CHEMOPROTECTIVE effects (cellular protection during cancer treatment). EVIDENCE: 3/5 reflects: (1) WANG 1964 foundational TCM clinical pyelonephritis/nephritis/urolithiasis studies, (2) Chronic hepatitis B systematic review of 9 RCTs (936 patients) with positive PUPS effects, (3) XIONG 1993 90-pt RCT Dan Shen + PUPS combination context, (4) YUAN 2004 ergone anti-aldosteronic diuretic mechanism, (5) WU 1997 anti-cachexic polysaccharide mechanism, (6) SEKIYA 2005 polyporusterone A/B antioxidant evidence, (7) PMID 33679418 renal fibrosis protection mechanism, (8) >2000 YEAR TCM use record (Shen Nong Ben Cao Jing), (9) HONEST CRITICAL CAVEATS — overall evidence quality LOW per HBV review, rigorous double-blind placebo-controlled trials still needed, most evidence in TCM combination formulas, (10) higher-evidence than typical TCM-only herb due to dedicated PUPS extract clinical research + 9-RCT systematic review. SAFETY: Excellent — Wang 1964 reported 'no side effects'; 28-day toxicity studies showed no toxic reactions in mice/dogs; >2000 year TCM use record. Best positioned as: (a) DIURETIC for kidney/urinary tract conditions (Wang 1964 pyelonephritis/nephritis/urolithiasis evidence), (b) CHRONIC HEPATITIS B INTEGRATIVE adjunct (9-RCT systematic review evidence), (c) RENAL FIBROSIS PROTECTION research context, (d) RADIO + CHEMOPROTECTIVE integrative oncology adjunct, (e) ANTI-CACHEXIC support in oncology, (f) TCM COMBINATION FORMULAS context (Wuling San, Si Ling San, Dan Shen + PUPS), (g) ANTI-ALDOSTERONIC mechanism distinguishing from osmotic/loop diuretics, (h) AVOID in Yin deficiency + non-dampness patterns + long-term use, (i) DIURETIC INTERACTIONS: monitor electrolytes if combined, (j) PREGNANCY: TCM record but limited Western data, (k) higher-evidence than typical TCM-only herb due to dedicated 9-RCT systematic review evidence. Honest framing: Polyporus umbellatus (Zhu Ling) has SOLID EMERGING EVIDENCE for diuretic + chronic hepatitis B + integrative oncology applications — Wang 1964 foundational TCM clinical evidence + 9-RCT chronic HBV systematic review (936 patients) + Yuan 2004 ergone anti-aldosteronic mechanism + Sekiya 2005 polyporusterone antioxidant evidence + radio/chemoprotective effects establish multi-application foundation.
CRITICAL HONEST LIMITATIONS: per chronic HBV systematic review — overall evidence quality LOW; rigorous double-blind placebo-controlled trials still needed. Most evidence in TCM COMBINATION FORMULAS (Wuling San, Si Ling San, Dan Shen + PUPS) rather than isolated PUPS. >2000 year TCM use record (Shen Nong Ben Cao Jing) supports cultural validity + safety. Distinguishing anti-aldosteronic diuretic mechanism (vs osmotic/loop diuretics) via ergone is biochemically interesting. Reasonable kidney/urinary tract support + chronic HBV integrative adjunct + integrative oncology context based on emerging evidence — particularly compelling for those wanting TCM-aligned diuretic with documented anti-aldosteronic mechanism. Position as TRADITIONAL TCM HERITAGE + EMERGING modern evidence rather than isolated efficacy claims. AVOID in Yin deficiency or long-term non-dampness use per TCM guidance.