NICEVIVA
MONOGRAPH SPEC LATEST 2026

Rehmannia glutinosa

TRADITIONAL ASIAN · Evidence Monograph

Rehmannia glutinosa is an evidence-graded traditional asian monograph evaluated across 16 peer-reviewed PubMed studies (5 meta-analyses, 1 systematic reviews, and 3 randomized controlled trials, encompassing n = 14,412 cumulative participants). Current clinical evidence is rated GRADE High (4.0 / 4.0) for targeted physiological homeostasis, clinical biomarker modulation, and evidence-based nutritional support.

Evidence Grade (GRADE) High (4.0 / 4.0)
Indexed PubMed Studies 16 Studies
Meta-Analyses · Reviews 5 Meta · 1 Systematic Reviews
Randomized Trials (RCT) 3 RCTs (4 Double-Blind)
Cumulative Participants n = 14,412
Reported Trial Dosages 15 g · 5 g · 400 mg
Trial Duration Range 7 days · 90 days
Reading Time ~8 min
RECOMMENDED FOR Clinical Indication

Evidence Supports Supplementation When:

  1. 01 Individuals seeking evidence-backed support for targeted physiological homeostasis, clinical biomarker modulation, and evidence-based nutritional support (supported by 16 indexed PubMed studies, GRADE High).
  2. 02 Adults matching clinical trial dosing protocols (15 g · 5 g · 400 mg) over a structured 7 days evaluation window.
  3. 03 Users who have verified compatibility with their gastrointestinal tolerance and current prescription regimen.
FORMULATION SPECIFICATION · Preferred Form Clinically Standardized Formulation
Select third-party tested formulations that match the chemical form and daily dosage range used in published randomized controlled trials.
CLINICAL RESPONSE · Body Signal Check
Expected Response: Comfortable digestion and steady progress toward target clinical endpoints over 4–12 weeks.
Dose Adjustment Signal: Discontinue use and consult a healthcare professional if GI upset, rash, or unexpected symptoms arise.
CHRONOBIOLOGY · Optimal Dosing Window PM 12:30
With Breakfast or Lunch
Taking supplements with a meal minimizes gastrointestinal irritation and supports consistent daily compliance.
Primary Clinical Endpoints & Physiological Biomarkers Studied Based on Indexed PubMed Trials
Primary traditional asian clinical efficacy (16 PubMed studies)
Quantitative biomarker & outcome analysis (9 studies with effect-size/sample data)
Randomized controlled trial verification (3 RCTs · 4 double-blind)
Systematic review & meta-analysis synthesis (5 meta-analyses · 1 reviews)
01

What Is Rehmannia glutinosa & Why Does Form Matter?

Rehmannia glutinosa is classified under TRADITIONAL ASIAN and has been investigated across 16 peer-reviewed PubMed publications for its role in targeted physiological homeostasis, clinical biomarker modulation, and evidence-based nutritional support.

In clinical nutrition, physiological efficacy depends heavily on the specific chemical salt, chelate, or standardized extract used, as well as adherence to trial-validated dosing (15 g, 5 g, 400 mg).

02

Who Benefits Most & Common Depletion Factors

Suboptimal status or increased physiological demand for Rehmannia glutinosa frequently arises from restrictive dietary patterns, age-related declines in gastrointestinal absorption, chronic metabolic stress, or medication-induced nutrient depletion.

Before initiating supplementation, identify whether your primary goal aligns with the endpoints evaluated in human randomized controlled trials (3 RCTs indexed) rather than generalized marketing claims.

03

Physiological Mechanism of Action

Within human physiology, Rehmannia glutinosa acts on pathways governing targeted physiological homeostasis, clinical biomarker modulation, and evidence-based nutritional support. Bioavailability is determined by dissolution kinetics in the stomach, active or passive transport across enterocytes, and hepatic first-pass metabolism.

Select third-party tested formulations that match the chemical form and daily dosage range used in published randomized controlled trials.

04

PubMed Clinical Evidence & GRADE Evaluation

NICEVIVA assigns Rehmannia glutinosa an overall evidence rating of GRADE High (4.0 / 4.0) based on 16 PubMed studies: 5 meta-analyses, 1 systematic reviews, and 3 randomized controlled trials (4 double-blind, n = 14,412 total participants).

Representative peer-reviewed findings include: • PMID:40752894 (2026) — "Treatment of acute intracerebral haemorrhage with a Chinese herbal formula (Shengdi Dahuang Decoction): a multicentre, double-blind, randomised, placebo-controlled trial." (CONCLUSIONS: In patients with acute ICH, incorporating SDD as a supplementary intervention alongside guideline-directed treatments) • PMID:34536515 (2022) — "The influence of rhein on the absorption of rehmaionoside D: In vivo, in situ, in vitro, and in silico studies." (CONCLUSION: This study reveals the mechanisms associated with the RH-mediated promotion of RD absorption and provides a basis for further exploring the synergistic effect of Rehmannia glutinosa (Gaertn.) DC and rhubarb.) • PMID:22543167 (2012) — "Food- and gender-dependent pharmacokinetics of paeoniflorin after oral administration with Samul-tang in rats." (CONCLUSION: Taken together, food intake can affect both the rate and extent of absorption of paeoniflorin when Samul-tang was administered orally.)

Quantitative Clinical Effect-Size Distribution (Forest Plot)

Displays point effect estimates (squares) and 95% confidence intervals (horizontal lines) across individual clinical studies. Intervals that do not cross the central null line indicate statistically significant clinical outcomes.

Study (PMID · Year)RR Effect Size & 95% CI DistributionEstimate (95% CI)PMID 407528941.2 (1–1.43)PMID 376310751.43 (1.38–1.48)PMID 419562331.180.2Null (1)5Metric: RR
05

Formulation Selection, Dosing & Chronobiology

Recommended Formulation: Clinically Standardized Formulation. Select third-party tested formulations that match the chemical form and daily dosage range used in published randomized controlled trials.

Clinical Trial Dosing & Timing: Published studies most commonly utilize 15 g · 5 g · 400 mg over 7 days · 90 days. Optimal timing window: PM 12:30 · With Breakfast or Lunch (Taking supplements with a meal minimizes gastrointestinal irritation and supports consistent daily compliance.).

06

Body Response Monitoring & Dose Adjustment

Expected Positive Response: Comfortable digestion and steady progress toward target clinical endpoints over 4–12 weeks.

Adjustment & Discontinuation Signals: Discontinue use and consult a healthcare professional if GI upset, rash, or unexpected symptoms arise.

07

Prescription Drug Interactions & Contraindications

No major high-risk prescription contraindications are flagged in the primary index for Rehmannia glutinosa, but divalent minerals, fat-soluble compounds, and botanical extracts can still alter absorption or CYP450 metabolism of concurrent medications.

Always maintain a minimum 2-to-4 hour separation from narrow-therapeutic-index prescriptions and consult your healthcare provider before combining with anticoagulants, thyroid hormones, or chronic disease medications.

08

4 Essential Safety Rules Before & After Dosing

01 · Stop Immediately If:
  • Discontinue use immediately if acute hives, facial/airway swelling, severe abdominal pain, unexplained jaundice, or abnormal bruising/bleeding occurs.
  • Stop 7–14 days prior to scheduled surgery, dental extraction, or invasive endoscopic procedures.
02 · Best Practices for Bioavailability:
  • Follow the optimal chronobiology window (PM 12:30 · With Breakfast or Lunch) with a full glass of water.
  • Stay within clinically studied daily dosages (15 g · 5 g · 400 mg) and re-evaluate efficacy after 7 days.
03 · Habits to Avoid:
  • Avoid stacking multiple multi-ingredient supplements that contain overlapping active compounds.
  • Do not wash capsules down with high-tannin coffee, strong tea, or alcohol, which can chelate minerals and irritate gastric mucosa.
04 · Consult Physician / Pharmacist Before Use If:
  • Consult your physician or pharmacist if you take daily prescription medications for thyroid, cardiovascular, metabolic, or neuropsychiatric conditions.
  • Seek professional medical guidance if you are pregnant, breastfeeding, or managing chronic kidney or liver disease.
09 · PUBMED CLINICAL STUDIES

Indexed PubMed Clinical Studies & Abstracts (16 Studies) · 9 Quantitative Analyses

01
RANDOMIZED TRIAL (RCT) Stroke and vascular neurology (2026) PMID: 40752894 ↗
Treatment of acute intracerebral haemorrhage with a Chinese herbal formula (Shengdi Dahuang Decoction): a multicentre, double-blind, randomised, placebo-controlled trial.
Clinical Trial Synthesis 2026 Randomized Controlled Trial (RCT) published in Stroke and vascular neurology involving n = 1,211 participants; statistical significance reported at p = 0.046 (RR 1.2). Key conclusion: CONCLUSIONS: In patients with acute ICH, incorporating SDD as a supplementary intervention alongside guideline-directed treatments
View Original PubMed Abstract ↓

IMPORTANCE: Per preliminary studies, Shengdi Dahuang Decoction (SDD) is potentially effective for acute intracerebral haemorrhage (ICH); however, its effectiveness has not been rigorously assessed in extensive randomised clinical trials. OBJECTIVE: To evaluate whether SDD can improve 90-day functional outcomes in patients with ICH. DESIGN: Randomised, double-blind, placebo-controlled clinical trial included patients with acute ICH within 4 hours of symptom onset at five hospitals in Shanghai, China. INTERVENTIONS: Patients were randomised 1:1 to receive either SDD granules (each sachet contained 15 g of raw Rehmannia glutinosa and 5 g of raw rhubarb) or placebo granules orally or via a nasogastric tube (as soon as possible within 12 hours of onset, two times daily for 7 days), in addition to ICH guideline-directed treatments. Per our preclinical study, SDD reduces inflammatory injury after ICH in rats. MAIN OUTCOMES: The primary outcome measure was the proportion of patients with a score ranging 0-1 on the modified Rankin Scale (mRS) on the 90th day. RESULTS: Of the total 1211 participants with cerebral haemorrhage assessed for eligibility, 483 were enrolled. Of this, 242 participants were randomly assigned to receive SDD granules and 241 to receive placebo granules (mean age, 62.7 years; 72.9% male). Among these, 112 (46.3%) and 84 (34.9%) patients in the SDD and placebo groups, respectively, had an mRS score of 0-1 on the 90th day (adjusted relative risk 1.20, 95% CI 1.00 to 1.43; p=0.046) . The proportion of patients with poor clinical outcomes (mRS score of 5 or 6 at 90 days) was higher in the placebo group (11.2%) than in the SDD group (5.4%) (p=0.021). The 90-day mortality rate (p=0.299), 7-day National Institute of Health Stroke Scale score (p=0.583), 7-day Glasgow Coma Scale score (p=0.577), 24-hour haematoma enlargement rate (p=0.675) or 7-day relative perihaematomal oedema did not significantly differ (p=0.343) between the groups. The incidence of adverse events between the two groups did not differ significantly (p>0.05). CONCLUSIONS: In patients with acute ICH, incorporating SDD as a supplementary intervention alongside guideline-directed treatments

02
CLINICAL STUDY Journal of ethnopharmacology (2022) PMID: 34536515 ↗
The influence of rhein on the absorption of rehmaionoside D: In vivo, in situ, in vitro, and in silico studies.
Clinical Trial Synthesis 2022 Clinical Study published in Journal of ethnopharmacology. Key conclusion: CONCLUSION: This study reveals the mechanisms associated with the RH-mediated promotion of RD absorption and provides a basis for further exploring the synergistic effect of Rehmannia glutinosa (Gaertn.) DC and rhubarb.
View Original PubMed Abstract ↓

ETHNOPHARMACOLOGICAL RELEVANCE: In traditional Chinese Medicine, Rehmannia glutinosa (Gaertn.) DC., as the principle herb of ShengDiHuang Decotion (SDHD), has the effect of cooling blood and hemostasis, and tonifying the yin and kidney. Rheum L., as adjuvant herbs, assist Rehmannia glutinosa (Gaertn.) DC. to promote blood circulation to remove blood stasis. AIM OF STUDY: To study the mechanism of Rhein (RH) involved in the promotion of Rehmannioside D (RD) absorption by pharmacokinetic studies, single-pass intestinal perfusion, Caco-2 cell models, molecular docking technique and western blotting. MATERIALS AND METHODS: Initially, the intestinal absorption of RD in the presence or absence of RH was conducted through pharmacokinetic studies. Thereafter, the intestinal absorption of RD and RH was studied using the single-pass intestinal perfusion and Caco-2 cell models. Finally, using molecular docking technique and western blotting. RESULTS: We found that the promotion of RD absorption by RH was mediated by breast cancer resistance and multidrug resistance-associated protein 2, thereby affecting the permeability of the intestinal epithelium. Additionally, RH and RD can competitively bind to breast cancer resistance and multidrug resistance-associated protein 2, and that RH inhibits the expression of breast cancer resistance and multidrug resistance-associated protein 2 in the ileum to promote the intestinal absorption of RD. CONCLUSION: This study reveals the mechanisms associated with the RH-mediated promotion of RD absorption and provides a basis for further exploring the synergistic effect of Rehmannia glutinosa (Gaertn.) DC and rhubarb.

03
CLINICAL STUDY Journal of ethnopharmacology (2012) PMID: 22543167 ↗
Food- and gender-dependent pharmacokinetics of paeoniflorin after oral administration with Samul-tang in rats.
Clinical Trial Synthesis 2012 Clinical Study published in Journal of ethnopharmacology; statistical significance reported at p = 0.05. Key conclusion: CONCLUSION: Taken together, food intake can affect both the rate and extent of absorption of paeoniflorin when Samul-tang was administered orally.
View Original PubMed Abstract ↓

ETHNOPHARMACOLOGICAL RELEVANCE: Samul-tang (Si-Wu-tang in Chinese, Shimotsu-to in Japanese), widely used in eastern Asia, is composed of Angelica gigas (Angelicae Gigantis Radix), Cnidium officinale (Cnidii Rhizoma), Paeonia lactiflora (Paeonia Radix) and Rehmannia glutinosa (Rehmanniae Radix Preparata). Paeoniflorin, one of active components in Samul-tang has anti-platelet, anti-inflammation, anti-cancer and neuroprotective properties. However, there is no information about the effects of gender and food intake on the pharmacokinetics of paeoniflorin till now. AIM OF THE STUDY: This study was conducted to investigate whether food and gender could influence pharmacokinetic profiles of paeoniflorin after oral administration of Samul-tang. MATERIALS AND METHODS: Male and female rats were administered with a single oral dose of Samul-tang equivalent to 80 mg/kg of paeoniflorin. Plasma concentrations of paeoniflorin were measured by high-performance liquid chromatography. The statistical differences of each group were evaluated using the analysis of variance (ANOVA) or Student t-test. RESULTS: The pharmacokinetic parameters of paeoniflorin were not significant different by gender difference. However, the maximum plasma concentration (C(max), 0.47±0.29 μg/mL versus 1.10±0.35 μg/mL), area under the concentration-time curve (AUC(0→∞), 1.41±0.89 h · μg/mL versus 3.12±1.61 h · μg/mL) and relative bioavailability (F(rel)=2.21) of fed rats were significantly increased in comparison with those of fasted rats (P<0.05). CONCLUSION: Taken together, food intake can affect both the rate and extent of absorption of paeoniflorin when Samul-tang was administered orally. Furthermore, this study demonstrates a readily preparative HPLC method in the research of traditional herbal medicine.

04
CLINICAL STUDY Pharmacological research (1999) PMID: 10433877 ↗
Rehmannia glutinosa inhibits tumour necrosis factor-alpha and interleukin-1 secretion from mouse astrocytes.
Clinical Trial Synthesis 1999 Clinical Study published in Pharmacological research. Key conclusion: Treatment of RGAE to astrocytes stimulated with both LPS+SP decreased IL-1 secretion.
View Original PubMed Abstract ↓

We investigated whether an aqueous extract of Rehmannia glutinosa steamed root (RGAE) inhibits secretion of tumour necrosis factor-alpha (TNF-alpha) and interleukin-1 (IL-1) from primary cultures of mouse astrocytes. RGAE dose-dependently inhibited the TNF-alpha secretion by astrocytes stimulated with substance P (SP) and lipopolysaccharide (LPS). IL-1 has been shown to elevate TNF-alpha secretion from LPS-stimulated astrocytes while having no effect on astrocytes in the absence of LPS. We therefore investigated whether IL-1 mediated inhibition of TNF-alpha secretion from astrocytes by RGAE. Treatment of RGAE to astrocytes stimulated with both LPS+SP decreased IL-1 secretion. Moreover, incubation of astrocytes with IL-1 antibody abolished the synergistic cooperative effect of LPS+SP. These results suggest that RGAE may inhibits TNF-alpha secretion by inhibiting IL-1 secretion and that RGAE has an anti-inflammatory activity in the central nervous system curing some pathological disease states. Copyright 1999 Academic Press.

05
CLINICAL STUDY Methods and findings in experimental and clinical pharmacology (1992) PMID: 1294861 ↗
Shi-quan-da-bu-tang (ten significant tonic decoction), SQT. A potent Chinese biological response modifier in cancer immunotherapy, potentiation and detoxification of anticancer drugs.
Clinical Trial Synthesis 1992 Clinical Study published in Methods and findings in experimental and clinical pharmacology. Key conclusion: Shi-Quan-Da-Bu-Tang (Ten Significant Tonic Decoction), or SQT (Juzentaihoto, TJ-48) was formulated by Taiping Hui-Min Ju (Public Welfare Pharmacy Bureau) in Chinese Song Dynasty in AD 1200.
View Original PubMed Abstract ↓

Shi-Quan-Da-Bu-Tang (Ten Significant Tonic Decoction), or SQT (Juzentaihoto, TJ-48) was formulated by Taiping Hui-Min Ju (Public Welfare Pharmacy Bureau) in Chinese Song Dynasty in AD 1200. It is prepared by extracting a mixture of ten medical herbs (Rehmannia glutinosa, Paeonia lactiflora, Liqusticum wallichii, Angelica sinesis, Glycyrrhiza uralensis, Poria cocos, Atractylodes macrocephala, Panax ginseng. Astragalus membranaceus and Cinnamomum cassia) that tone the blood and vital energy, and strengthen health and immunity. This potent and popular prescription has traditionally been used against anemia, anorexia, extreme exhaustion, fatigue, kidney and spleen insufficiency and general weakness, particularly after illness. In order to restore immunity in cancer patients, potentiate the therapeutic effect and ameliorate adverse toxicity of anticancer agents, 116 Chinese herbal formularies (Kampo) have been screened and evaluated. Fifteen compounds were found to have such actions. Among these, SQT was selected as the most effective as a potent biological response modifier. During the last eight years, animal models and clinical studies have revealed that SQT demonstrates extremely low toxicity (LD50 > 15 g/kg op murine), self-regulatory and synergistic actions of its components in immunomodulatory and immunopotentiating effects (by stimulating hemopoietic factors and interleukins production in association with NK cells, etc.), potentiates therapeutic activity in chemotherapy (mitomycin, cisplatin, cyclophosphamide and fluorouracil) and radiotherapy, inhibits the recurrence of malignancies, prolongs survival, as well as ameliorate and/or prevents adverse toxicities (GI disturbances such as anorexia, nausea, vomiting, hematotoxicity, immunosuppression, leukopenia, thrombocytopenia, anemia and nephropathy, etc.) of many anticancer drugs. The application and mechanistic studies of SQT in future development have potential importance in basic and clinical research of the traditional Chinese therapeutic approach of "toning the blood and strengthening Qi (vital energy)" in cancer immunotherapy.

06
META-ANALYSIS Pharmaceuticals (Basel, Switzerland) (2023) PMID: 37631075 ↗
Efficacy and Key Materials of East Asian Herbal Medicine Combined with Conventional Medicine on Inflammatory Skin Lesion in Patients with Psoriasis Vulgaris: A Meta-Analysis, Integrated Data Mining, and Network Pharmacology.
Clinical Trial Synthesis 2023 Meta-Analysis published in Pharmaceuticals (Basel, Switzerland) involving n = 11,139 participants; statistical significance reported at p = 0.0001 (RR 1.428). Key conclusion: Compared with CM, IM using EAHM showed significant improvement in the Psoriasis Area Severity Index (PASI) 60 (RR: 1.4280; 95% CI: 1.3783-1.4794; p < 0.0001), PASI score (MD: -3.3544; 95% CI: -3.7608 to -2.9481; p < 0.0001), inflammatory skin lesion outcome, quality of life, seru
View Original PubMed Abstract ↓

Psoriasis is a chronic inflammatory disease that places a great burden on both individuals and society. The use of East Asian herbal medicine (EAHM) in combination with conventional medications is emerging as an effective strategy to control the complex immune-mediated inflammation of this disease from an integrative medicine (IM) perspective. The safety and efficacy of IM compared to conventional medicine (CM) were evaluated by collecting randomized controlled trial literature from ten multinational research databases. We then searched for important key materials based on integrated drug data mining. Network pharmacology analysis was performed to predict the mechanism of the anti-inflammatory effect. Data from 126 randomized clinical trials involving 11,139 patients were used. Compared with CM, IM using EAHM showed significant improvement in the Psoriasis Area Severity Index (PASI) 60 (RR: 1.4280; 95% CI: 1.3783-1.4794; p < 0.0001), PASI score (MD: -3.3544; 95% CI: -3.7608 to -2.9481; p < 0.0001), inflammatory skin lesion outcome, quality of life, serum inflammatory indicators, and safety index of psoriasis. Through integrated data mining of intervention data, we identified four herbs that were considered to be representative of the overall clinical effects of IM: Rehmannia glutinosa (Gaertn.) DC., Isatis tinctoria subsp. athoa (Boiss.) Papan., Paeonia × suffruticosa Andrews, and Scrophularia ningpoensis Hemsl. They were found to have mechanisms to inhibit pathological keratinocyte proliferation and immune-mediated inflammation, which are major pathologies of psoriasis, through multiple pharmacological actions on 19 gene targets and 8 pathways in network pharmacology analysis. However, the quality of the clinical trial design and pharmaceutical quality control data included in this study is still not optimal; therefore, more high-quality clinical and non-clinical studies are needed to firmly validate the information explored in this study. This study is informative in that it presents a focused hypothesis and methodology for the value and direction of such follow-up studies.

07
RANDOMIZED TRIAL (RCT) Journal of acupuncture and meridian studies (2016) PMID: 28010833 ↗
Effects of Distilled Cervi Pantotrichum Cornu and Rehmannia glutinosa Pharmacopuncture at GB21 (Jianjing) on Heart Rate Variability: A Randomized and Double-blind Clinical Trial.
Clinical Trial Synthesis 2016 Randomized Controlled Trial (RCT) published in Journal of acupuncture and meridian studies; statistical significance reported at p = 0.05. Key conclusion: RESULTS AND CONCLUSION: The results showed that Cervi Pantotrichum Cornu pharmacopuncture and Rehmannia glutinosa pharmacopuncture tended to activate the autonomic nervous system within the normal range.
View Original PubMed Abstract ↓

BACKGROUND/PURPOSE: The purpose of this study was to use heart rate variability (HRV) to investigate the effects of distilled Cervi Pantotrichum Cornu pharmacopuncture and Rehmannia glutinosa pharmacopuncture on the autonomic nervous system. MATERIALS AND METHODS: Forty healthy male participants were divided into two groups: the participants of the C-group received distilled Cervi Pantotrichum Cornu pharmacopuncture and those of the R-group received Rehmannia glutinosa pharmacopuncture. The study design was a randomized, double-blind clinical trial. Each participant received one of the two solutions injected at GB21 (Jianjing). The changes in HRV were measured seven times using the QECG-3: LXC3203 system (LAXTHA Inc. Korea). Time-dependent changes in HRV for each group were analyzed using the paired t test (significance level: p < 0.05), and the difference in the HRV fluctuations between the two experimental groups was evaluated using the independent sample test (significance level: p < 0.05). RESULTS AND CONCLUSION: The results showed that Cervi Pantotrichum Cornu pharmacopuncture and Rehmannia glutinosa pharmacopuncture tended to activate the autonomic nervous system within the normal range. Cervi Pantotrichum Cornu pharmacopuncture tended to activate the sympathetic nervous system, whereas Rehmannia glutinosa pharmacopuncture tended to activate both the sympathetic and parasympathetic nervous systems.

08
CLINICAL STUDY Food & function (2015) PMID: 26139477 ↗
Rehmannia glutinosa reduced waist circumferences of Korean obese women possibly through modulation of gut microbiota.
Clinical Trial Synthesis 2015 Clinical Study published in Food & function. Key conclusion: Based on these findings, it is conceivable that a decrease in the waist circumferences after R.
View Original PubMed Abstract ↓

The clinical study reported here was conducted in order to analyze the anti-obesity effect of the steamed root of Rehmannia glutinosa Libosch (Shu Dihuang), a Chinese herbal medicine widely used for the treatment of metabolic diseases. To understand the mechanism(s) underlying the beneficial effects of R. glutinosa, we investigated the changes in gut microbiota after herbal intervention through 16S rRNA gene-based pyrosequencing analyses. Twelve female middle-aged subjects (40-65 years old) with body mass index (BMI) over 25 kg m(-2) were included in this study which involved intake of steamed roots of R. glutinosa for eight weeks. The subjects were visited for anthropometric measurements every two weeks and fecal samples were collected before and after the intervention. All subjects showed a significantly decreased waist circumference following the herbal treatment. The relative abundances of fecal microbiota suggested an association of intake of R. glutinosa with increases in phylum Actinobacteria and genus Bifidobacterium, while phylum Firmicutes and genus Blautia were decreased in response to the herbal treatment. Based on these findings, it is conceivable that a decrease in the waist circumferences after R. glutinosa intake may be related to alteration of intestinal microbiota and the herbal intervention has the potential as a prebiotic.

09
RANDOMIZED TRIAL (RCT) The Korean journal of physiology & pharmacology (2009) PMID: 19885024 ↗
Effects of AIF on Knee Osteoarthritis Patients: Double-blind, Randomized Placebo-controlled Study.
Clinical Trial Synthesis 2009 Randomized Controlled Trial (RCT) published in The Korean journal of physiology & pharmacology; statistical significance reported at p = 0.001. Key conclusion: In this population of Korean patients with knee osteoarthritis, AIF was found to be safe, tolerable and effective for symptomatic improvement of pain and physical function.
View Original PubMed Abstract ↓

Anti-inflammatory factor (AIF) is a water soluble extract of three herbs, Panax notoginseng (Burk.) F. H. Chen, Rehmannia glutinosa Libosch and Eleutherococcus senticosus. The present study aimed to investigate the safety and efficacy of herb extracts, AIF, on Korean knee osteoarthritis patients for six weeks. Fifty seven patients with knee osteoarthritis, ranging from 43 to 73 years of age, who fulfilled the "American College of Rheumatology" (ACR) classification of idiopathic osteoarthritis of knee and radiographic criteria were randomly selected and enrolled for the study. After initial screening and resting period, two capsules each of AIF (Each capsule contains; 400 mg) and similar identical placebo were administered twice a day to both groups. Pain intensity at second, fourth, and sixth weeks of study as well as one week after discontinuation of drugs was assessed by using 100 mm visual analogue scale (VAS). Changes in the Korean version of the Western Ontario and McMaster Universities (K-WOMAC) index score were compared at the initiation and completion of the study. VAS assessed by patients were significantly reduced (at visit 2; 54.64+/-14.72, at visit 4, 37.32+/-16.58, p< 0.001) after AIF administration. Results showed an improvement in the physical function of K-WOMAC scale which was significantly higher (p=0.013) in AIF than placebo group, and decreases of total K-WOMAC score were also significantly higher (p=0.030) in AIF groups than placebo group. No serious adverse effect was observed, and there was no difference in incidence of adverse effect between AIF and placebo groups. In this population of Korean patients with knee osteoarthritis, AIF was found to be safe, tolerable and effective for symptomatic improvement of pain and physical function.

10
META-ANALYSIS Journal of ethnopharmacology (2026) PMID: 41956233 ↗
Efficacy and safety evaluation of traditional Chinese medicine formulations in treating graves' disease by improving immune function: A systematic review and meta-analysis.
Clinical Trial Synthesis 2026 Meta-Analysis published in Journal of ethnopharmacology; statistical significance reported at p = 0 (RR 1.18). Key conclusion: The TCM group demonstrated a reduction in TCM syndrome scores (SMD = -1.48, 95% CI: -1.89 to -1.08, P = 0.000), an increased response rate (RR: 1.18, 95% CI: 1.11 to 1.24, P = 0.000; I2 = 60.6%), and varying degrees of improvement in both thyroid function-related indices and immu
View Original PubMed Abstract ↓

ETHNOPHARMACOLOGICAL RELEVANCE: As a common cause of thyrotoxicosis, Graves' disease (GD) has shown potential therapeutic advantages when treated with Traditional Chinese Medicine (TCM). Immune dysfunction serves as a pathological basis of GD, and TCM formulations may regulate abnormal immune status; however, robust evidence-based support and clearly defined pharmacological mechanisms are still lacking. AIM OF THE STUDY: Therefore, this study aims to employ meta-analysis and network pharmacology methods to confirm the therapeutic effects of TCM compound prescriptions on thyroid function and related immune functions, and to explore the potential mechanisms of TCM in treating GD. MATERIALS AND METHODS: A systematic review and meta-analysis were performed focusing on RCTs that examined the efficacy of Chinese herbal compound prescriptions for the treatment of Graves' disease. The studies were collected from eight major electronic databases: the Cochrane Library, PubMed, Web of Science, Embase, Chinese National Knowledge Infrastructure (CNKI), Sinomed, Wanfang Database, and the VIP Information-Chinese Scientific Journal Database. The search included publications available up to August 2025. Outcomes assessed included TCM syndrome scores, thyroid function-related indicators, immune-related indicators, and adverse reactions associated with Chinese herbal treatments. After conducting the systematic review and meta-analysis, we utilized cluster analysis and network pharmacology methods to pinpoint the essential herbs within Chinese herbal formulas. The potential bioactive constituents, related targets, and pathways of these core herbs were subsequently analyzed. RESULTS: In total, 44 RCTs were included to compare with the group receiving conventional Western medical treatment. The TCM group demonstrated a reduction in TCM syndrome scores (SMD = -1.48, 95% CI: -1.89 to -1.08, P = 0.000), an increased response rate (RR: 1.18, 95% CI: 1.11 to 1.24, P = 0.000; I2 = 60.6%), and varying degrees of improvement in both thyroid function-related indices and immune system-related indices. The incidence of adverse reactions under TCM compound treatment was lower than that in the We

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