Kudzu (Pueraria lobata)

Also called Pueraria lobata, Pueraria montana var. lobata, kudzu root, ge gen, Radix Puerariae, puerarin.

The short answer

From 22 sources

Kudzu root is an isoflavone-rich herb studied mainly for alcohol intake. Small trials from one US group found it cut drinking in heavy drinkers not seeking treatment, but not in two trials of people in alcohol treatment. Menopause results are mixed, and puerarin did not clearly change heart risk factors. Kudzu isoflavones act like estrogen in lab tests.

Key facts

Drinking, heavy drinkers
A standardized kudzu extract cut weekly drinks by 34-57% over 4 weeks vs placebo in 17 young men not seeking treatment2
Single dose
One 2 g dose (520 mg isoflavones) before a drinking session cut beers consumed from 3.0 to 1.9, while the placebo group rose from 2.7 to 3.4 (n=20)3
People in treatment
In 19 adults with alcohol use disorder receiving counseling, kudzu reduced heavy drinking days by 30% vs 44% with placebo over 8 weeks; an earlier VA trial (n=38) also found no benefit56
Menopause
A kudzu flower and mandarin peel blend (1,150 mg/day) lowered hot flash scores vs placebo over 12 weeks in 84 women9
Heart risk factors
Puerarin 90.2 mg/day did not clearly change lipids or blood pressure in a 217-man crossover trial16
Liver
No LiverTox chapter of its own; LiverTox's Chinese herbal medicines chapter cites a review counting 2 causality-confirmed liver injury cases from Pueraria lobata20
Conflicts of interest
The US alcohol trials come from one McLean Hospital group; two of its investigators hold a patent and the extract is licensed to the company that sells it25

What it is

Kudzu is a climbing vine in the pea family whose root, rich in the isoflavone puerarin, is used in Chinese medicine and in supplements.

How it works

Proposed

Kudzu root contains isoflavones, mainly puerarin, daidzin and daidzein. Trial authors report that kudzu did not make alcohol feel stronger, and it slowed sipping and drinking pace, so the mechanism for reduced drinking is unknown. The isoflavones show estrogen-like activity in laboratory assays.71410

Forms, side by side

3 forms named in our sources. The rest show what our data holds, and say plainly where it holds nothing yet.

Kudzu (Pueraria lobata) forms compared

3 forms
Kudzu (Pueraria lobata) forms compared: 3 forms by 3 attributes. Empty cells are labelled No data yet, or Not graded in the evidence row.
3 formsStandardized kudzu root extract (isoflavones)Isolated puerarinKudzu flower blends
Absorption in peopleNot reported in the trial abstracts.258Not reported in the abstract.4Not reported.9
GI toleranceNo adverse events and no changes in liver or kidney tests in 4- and 8-week trials.258No problems described over 1 week.4No serious adverse events over 12 weeks.9
Studied forAlcohol intake, menopause markersAlcohol intakeHot flashes
  1. Standardized kudzu root extract (isoflavones)
    Absorption in people
    Not reported in the trial abstracts.258
    GI tolerance
    No adverse events and no changes in liver or kidney tests in 4- and 8-week trials.258
    Studied for
    Alcohol intake, menopause markers
  2. Isolated puerarin
    Absorption in people
    Not reported in the abstract.4
    GI tolerance
    No problems described over 1 week.4
    Studied for
    Alcohol intake
  3. Kudzu flower blends
    Absorption in people
    Not reported.9
    GI tolerance
    No serious adverse events over 12 weeks.9
    Studied for
    Hot flashes
Every cell holds data from a cited page; citation numbers link to the page that holds them.Scroll the table for every column

What the human research says

Human trials only, one row per outcome. The form line shows what each trial actually tested. Grades follow our evidence-grading policy.

Trial map

11 graded outcomes, largest study first

11 graded outcomes: 7 improved, 1 mixed, 3 no effect. The largest, a 2025 meta-analysis of 2,480 people on heart function in chronic heart failure (intravenous puerarin in hospital), found an improvement.

1Heart function in chronic heart failure (intravenous puerarin in hospital)

Improved · Grade C · Meta-analysis, 2,480 people, 2025

Patients with chronic heart failure in 29 trials (China), intravenous puerarin added to standard drugs

Dose, result and source
Every graded outcome on this page, largest study first
OutcomeFoundPeopleStudyWho was studied
Heart function in chronic heart failure (intravenous puerarin in hospital)Improved2,480Grade C · Meta-analysis, 2025Patients with chronic heart failure in 29 trials (China), intravenous puerarin added to standard drugs
LDL cholesterol, blood pressure and other heart risk factorsNo effect217Grade C · Crossover RCT, 2022Chinese men aged 18-50 without heart disease (Hong Kong)
Lipids, hormones and cognition after menopauseMixed127Grade D · RCT, 2003Postmenopausal women aged 50-65 in Hong Kong (kudzu, hormone therapy or no treatment)
Hot flashes and bone turnover in the menopausal transitionImproved84Grade C · RCT, 2020Healthy women aged 45-60 with menopausal hot flashes (Korea)
Body mass index and visceral fat in obesityImproved81Grade D · RCT, 2012Japanese men and women with BMI of 25 or more
Menopause symptom scores and bone and cartilage markersImproved50Grade D · Open-label trial, 2021Postmenopausal women with at least mild symptoms (Denmark)
Craving and sobriety in veterans in substance-abuse treatmentNo effect38Grade D · RCT, 2000Veterans with alcoholism entering a treatment program (US VA)
Beers consumed in a lab drinking session after one doseImproved20Grade D · RCT, 2015Men in a natural-settings drinking laboratory (US)
Heavy drinking days in people in alcohol treatmentNo effect19Grade D · RCT, 2026Treatment-seeking men and women aged 27-65 with alcohol use disorder, with weekly counseling (US)
Weekly alcohol intake in heavy drinkers not seeking treatmentImproved17Grade D · RCT, 2013Men aged 21-33 drinking about 28 drinks per week with alcohol abuse or dependence (US)
Beers consumed after a week of puerarinImproved10Grade D · Crossover RCT, 2012Healthy adult beer drinkers (US)
Each circle is one graded outcome on this page, numbered from the largest study down, and placed by how many people it studied (log scale). It shows who was studied and what was found, not advice about your dose.

Every graded row

11 rows

Showing 11 of 11 outcomes. Human trials only.

Grade CHeart function in chronic heart failure (intravenous puerarin in hospital)Heart failure (intravenous)Better heart-function measuresMeta-analysis
n 2,480 · 2025

Improved Ejection fraction rose (MD 6.22 points, 95% CI 3.11 to 9.33) and cardiac output and stroke volume improved versus standard drugs alone, with safety similar to standard therapy. The authors rated trial quality suboptimal.

Design
Meta-analysis, n = 2,480, 2025
Population
Patients with chronic heart failure in 29 trials (China), intravenous puerarin added to standard drugs
Form
Intravenous puerarin
Dose
Varied by trial (not given in the abstract)
Duration
Varied by trial
Source
Reference 19 · PubMed 40391374 (opens PubMed)
Grade CLDL cholesterol, blood pressure and other heart risk factorsHeart risk factorsNo clear changeCrossover RCT
n 217 · 2022

No effect Lipids were similar on puerarin and placebo (LDL difference −0.02 mmol/L), and blood pressure, testosterone, hs-CRP, prothrombin time and liver and kidney tests did not differ. In an exploratory analysis fasting glucose was 0.13 mmol/L lower on puerarin (95% CI −0.25 to −0.008).

Design
Crossover RCT, n = 217, 2022
Population
Chinese men aged 18-50 without heart disease (Hong Kong)
Form
Puerarin supplement vs placebo
Dose
90.2 mg/day puerarin
Duration
Two treatment periods with a 4-week washout (period length not given in the abstract)
Source
Reference 16 · PubMed 36076498 (opens PubMed)
Grade CHot flashes and bone turnover in the menopausal transitionHot flashesLower hot flash scoresRCT
n 84 · 2020

Improved Hot flash scores (p = 0.041) and severity (p < 0.001) improved vs placebo; the bone-resorption marker CTx fell (p = 0.027). No serious adverse events or hormone changes.

Design
RCT, n = 84, 2020
Population
Healthy women aged 45-60 with menopausal hot flashes (Korea)
Form
Kudzu flower plus mandarin peel extract vs placebo
Dose
1,150 mg/day
Duration
12 weeks
Source
Reference 9 · PubMed 33105861 (opens PubMed)
Grade DLipids, hormones and cognition after menopauseMenopauseNo lipid or hormone changeRCT
n 127 · 2003

Mixed Kudzu did not change cholesterol, LDL, FSH or LH compared with no treatment, while hormone therapy lowered cholesterol and LDL. Mini-Mental State scores and attention span improved in both active groups versus no treatment.

Design
RCT, n = 127, 2003
Population
Postmenopausal women aged 50-65 in Hong Kong (kudzu, hormone therapy or no treatment)
Form
Pueraria lobata (kudzu root) vs hormone replacement therapy vs no treatment
Dose
Equivalent to 100 mg isoflavones per day
Duration
3 months
Source
Reference 18 · PubMed 12851519 (opens PubMed)
Grade DBody mass index and visceral fat in obesityBody weightLower BMI and visceral fatRCT
n 81 · 2012

Improved BMI and visceral fat area fell compared with placebo; subcutaneous fat did not change.

Design
RCT, n = 81, 2012
Population
Japanese men and women with BMI of 25 or more
Form
Kudzu flower extract (Pueraria thomsonii) vs placebo
Dose
200 or 300 mg/day
Duration
12 weeks
Source
Reference 17 · PubMed 22878195 (opens PubMed)
Grade DMenopause symptom scores and bone and cartilage markersBone markersLower bone-breakdown markersOpen-label trial
n 50 · 2021

Improved Menopause Rating Scale scores fell in four of five groups; with two capsules three times daily, serum CTX-I fell 18.4% and urine CTX-II 17.4%. Well tolerated.

Design
Open-label trial, n = 50, 2021
Population
Postmenopausal women with at least mild symptoms (Denmark)
Form
Kudzu root extract in five dose regimens, no placebo
Dose
One to three times daily (five regimens)
Duration
4 weeks
Source
Reference 8 · PubMed 34744740 (opens PubMed)
Grade DCraving and sobriety in veterans in substance-abuse treatmentAlcohol intakeNo benefit over placeboRCT
n 38 · 2000

No effect No significant difference in craving or sobriety scores between kudzu and placebo.

Design
RCT, n = 38, 2000
Population
Veterans with alcoholism entering a treatment program (US VA)
Form
Kudzu root extract vs placebo
Dose
1.2 g twice daily
Duration
1 month (some followed longer)
Source
Reference 6 · PubMed 10706235 (opens PubMed)
Grade DBeers consumed in a lab drinking session after one doseAlcohol intakeAbout one beer fewerRCT
n 20 · 2015

Improved Beers consumed fell from 3.0 to 1.9 with kudzu and rose from 2.7 to 3.4 with placebo; kudzu drinkers drank more slowly.

Design
RCT, n = 20, 2015
Population
Men in a natural-settings drinking laboratory (US)
Form
Kudzu extract (Alkontrol-Herbal) vs placebo
Dose
2 g extract (520 mg isoflavones) once, 2.5 hours before drinking
Duration
Single dose
Source
Reference 3 · PubMed 26048637 (opens PubMed)
Grade DHeavy drinking days in people in alcohol treatmentAlcohol intakeNo benefit over placeboRCT
n 19 · 2026

No effect Heavy drinking days fell 30% with kudzu and 44% with placebo; kudzu was not better than placebo. No adverse events or safety concerns.

Design
RCT, n = 19, 2026
Population
Treatment-seeking men and women aged 27-65 with alcohol use disorder, with weekly counseling (US)
Form
Kudzu extract vs placebo
Dose
750 mg isoflavones daily
Duration
8 weeks
Source
Reference 5 · PubMed 42779941 (opens PubMed)
Grade DWeekly alcohol intake in heavy drinkers not seeking treatmentAlcohol intakeFewer drinks per weekRCT
n 17 · 2013

Improved Weekly drinks fell 34-57%, heavy drinking days fell and abstinent days rose vs placebo; craving did not change. No adverse events or changes in liver or kidney tests.

Design
RCT, n = 17, 2013
Population
Men aged 21-33 drinking about 28 drinks per week with alcohol abuse or dependence (US)
Form
Standardized kudzu extract (NPI-031) vs placebo
Dose
250 mg isoflavones three times daily (750 mg/day)
Duration
4 weeks
Source
Reference 2 · PubMed 23070022 (opens PubMed)
Grade DBeers consumed after a week of puerarinAlcohol intakeAbout one beer fewerCrossover RCT
n 10 · 2012

Improved Average beers fell from 3.5 with placebo to 2.4 with puerarin; sip size fell and time per beer rose.

Design
Crossover RCT, n = 10, 2012
Population
Healthy adult beer drinkers (US)
Form
Isolated puerarin vs placebo
Dose
1,200 mg/day
Duration
1 week per period
Source
Reference 4 · PubMed 22578529 (opens PubMed)

What the numbers add up to

Each point is worked out from the data and the sources numbered on this page, with the arithmetic shown under it. It adds no new data and is not medical advice.

Works in the lab, not in treatment

Benefits appeared in short lab drinking sessions and in heavy drinkers not seeking help, but disappeared in two trials of people already in treatment.2356

How we got this: Comparison of alcohol trials on this page

One research group

All the positive US alcohol trials come from the same McLean Hospital group, whose investigators hold a patent and licensing ties to the extract.245

How we got this: Conflict-of-interest statements

Studied doses

Doses used in research, shown against the official limits. They describe the studies, not a recommendation for you.

Studied doses in research, not advice. These are amounts used in research, not personal advice. Your clinician or pharmacist can say what fits you.

Doses studied in human trials

Doses studied in human trials ranged from 90.2 mg/day of puerarin and 200-300 mg/day of kudzu flower extract to 750 mg/day of root isoflavones for 4-8 weeks, plus a single 2 g dose of extract (520 mg isoflavones); a VA trial used 1.2 g of root extract twice daily (2.4 g/day) and menopause trials used 100 mg/day of isoflavones for 3 months or a 1,150 mg/day flower blend for 12 weeks. These are research doses, not recommendations.16173256189

When trials measured an effect

1 outcome
How long trials ran before effects were measured
OutcomeMeasured atBasis
Beers consumed in a lab drinking sessionSame day, from a single dose 2.5 hours before drinking20-man trial: 2 g extract (520 mg isoflavones) cut beers from 3.0 to 1.9 in the session3
When each outcome was assessed in the cited trials. It is not a promise of when anyone will notice a change.

Interactions and safety

Published interactions only: each row cites a source. No row means none was found in our sources, not that a combination is safe.

What Kudzu meets

6 cited rows 2 tested together

Medicines 6

Kudzu6 medicines · 1 supplement

Supplements and foods 1

  • Measured in a human study
  • Reference summary
  • Tested together in a graded trial
Also cited: 2 tested together
  1. Alcohol

    • RCTMeasured in a human study

      Alcohol, for example drinking while using kudzu: After 9 days of kudzu extract, blood alcohol rose slightly faster for 10-15 minutes after a larger alcohol dose (0.7 g/kg), and heart rate and skin temperature effects were stronger; peak alcohol levels and subjective intoxication did not change.

      Source 7, Alcohol Clin Exp Res (2011)

  2. Drugs broken down by CYP2D6 or CYP1A2

    • PK studyMeasured in a human study

      Drugs broken down by CYP2D6 or CYP1A2, for example medicines metabolized by these liver enzymes: In 18 healthy men, oral puerarin lowered CYP2D6 activity and raised CYP1A2 activity (plasma paraxanthine/caffeine ratio up 30%), which could change levels of drugs cleared by these enzymes; Memorial Sloan Kettering notes clinical relevance has not been determined.

      Source 22, Arch Pharm Res (2010); Source 14, Memorial Sloan Kettering Cancer Center (2022)

  3. Methotrexate

    • PK studyMeasured in a human study

      Methotrexate, for example methotrexate for arthritis, psoriasis or cancer: In rats and cell studies, puerarin raised methotrexate exposure by blocking its intestinal efflux and kidney uptake transporters (MDR1, OAT1/OAT3). No human study exists, so this is an animal and laboratory signal only.

      Source 11, Pharm Res (2014)

  4. Warfarin and other anticoagulants

    • PK studyMeasured in a human study

      Warfarin and other anticoagulants, for example warfarin (Coumadin): In rats, kudzu root extract sped up warfarin's breakdown in the liver and offset its blood-thinning effect. No human study exists, so this is a laboratory signal only, but a change in warfarin effect matters because its dose is tightly adjusted.

      Source 15, Chin Med (2016)

  5. Diabetes medicines

    • NIH fact sheetReference summary

      Diabetes medicines, for example glucose-lowering drugs: Memorial Sloan Kettering notes animal studies suggesting puerarin lowers blood glucose and may add to these medicines; clinical relevance has not been determined.

      Source 14, Memorial Sloan Kettering Cancer Center (2022)

  6. Tamoxifen

    • NIH fact sheetReference summary

      Tamoxifen, for example tamoxifen for estrogen-receptor-positive breast cancer: Memorial Sloan Kettering advises people taking tamoxifen to avoid kudzu because its estrogen-like isoflavones may work against the drug; clinical relevance has not been tested.

      Source 14, Memorial Sloan Kettering Cancer Center (2022)

  7. Hovenia dulcisHovenia dulcis page

Rows as our evidence profiles cite them; links stay on this site. Line weight shows what backs a row, not how serious an interaction is. No line means none was found in our sources, not that a combination is safe. Not medical advice: ask your pharmacist.

Interactions

6 agents
Published interactions, grouped by kind
AgentWhat the source saysEvidence
Medicines6
Alcohole.g. drinking while using kudzuAfter 9 days of kudzu extract, blood alcohol rose slightly faster for 10-15 minutes after a larger alcohol dose (0.7 g/kg), and heart rate and skin temperature effects were stronger; peak alcohol levels and subjective intoxication did not change.7RCT
Methotrexatee.g. methotrexate for arthritis, psoriasis or cancerIn rats and cell studies, puerarin raised methotrexate exposure by blocking its intestinal efflux and kidney uptake transporters (MDR1, OAT1/OAT3). No human study exists, so this is an animal and laboratory signal only.11PK study
Warfarin and other anticoagulantse.g. warfarin (Coumadin)In rats, kudzu root extract sped up warfarin's breakdown in the liver and offset its blood-thinning effect. No human study exists, so this is a laboratory signal only, but a change in warfarin effect matters because its dose is tightly adjusted.15PK study
Tamoxifene.g. tamoxifen for estrogen-receptor-positive breast cancerMemorial Sloan Kettering advises people taking tamoxifen to avoid kudzu because its estrogen-like isoflavones may work against the drug; clinical relevance has not been tested.14NIH fact sheet
Diabetes medicinese.g. glucose-lowering drugsMemorial Sloan Kettering notes animal studies suggesting puerarin lowers blood glucose and may add to these medicines; clinical relevance has not been determined.14NIH fact sheet
Drugs broken down by CYP2D6 or CYP1A2e.g. medicines metabolized by these liver enzymesIn 18 healthy men, oral puerarin lowered CYP2D6 activity and raised CYP1A2 activity (plasma paraxanthine/caffeine ratio up 30%), which could change levels of drugs cleared by these enzymes; Memorial Sloan Kettering notes clinical relevance has not been determined.2214PK study

Check with what you take

Kept on this device only

Add what you take. We list every interaction our evidence profiles cite between Kudzu and your picks, and between your picks.

Most cited:

Add a supplement or medicine you take to check it against Kudzu.

Starting from one medicine? The interaction checker rates how serious each pair is, on a curated list of 19 entries for 11 medicines. This cabinet has no severity rating: it lists every interaction row our supplement pages cite.

Not medical advice, and no dosing advice. An empty result means no row we cite names that pair, by name or through a drug class we can link the medicine to, not that a combination is safe. Where our sources name only a group of medicines we cannot match, the cabinet says so. Ask your pharmacist before you combine supplements and medicines.

Who should be careful

8 groups
People with alcohol use disorder
Kudzu did no better than placebo in two small trials of people receiving alcohol treatment, so it is not a substitute for proven care.56
People with hormone-sensitive conditions
Kudzu root isoflavones show estrogen-like activity in laboratory assays, and Memorial Sloan Kettering advises people with hormone-sensitive cancers to avoid kudzu. The menopause trials were too short and small to settle safety in breast or uterine conditions.10149
People with liver problems
LiverTox has no kudzu chapter. Its Chinese herbal medicines chapter cites a review that counted 2 causality-confirmed liver injury cases from Pueraria lobata, and its Mistletoe chapter describes a man whose liver injury began 10 days after starting a kudzu root extract alongside mistletoe; causality scoring pointed mainly to mistletoe and his tests returned to normal within a week of stopping.202112
People with kidney problems
Memorial Sloan Kettering describes a case of acute interstitial nephritis in a woman who drank kudzu root juice for 10 days; symptoms improved within days of stopping.14
People on methotrexate
Puerarin raised methotrexate exposure in rats and cell studies. No human study exists, so the size of any effect in people is unknown.11
People on warfarin or other blood thinners
In a rat study, kudzu root extract weakened warfarin's blood-thinning effect. There are no human data, so this is a theoretical concern for anyone whose warfarin dose is adjusted by blood tests.15
Pregnancy and breastfeeding
No reliable safety data: LactMed has no kudzu entry and none of the trials included pregnant or breastfeeding women. Because kudzu isoflavones act like estrogen in laboratory assays, using it during pregnancy or breastfeeding is untested.291014
People with diabetes
Animal studies suggest puerarin lowers blood glucose, and a puerarin trial hinted at lower fasting glucose in an exploratory analysis, so glucose monitoring matters for anyone on glucose-lowering medicine.1416
Talk to your pharmacist or clinician before starting a supplement, especially if you take prescription medicines.

How to read the label

What to check on the Supplement Facts panel.

How to read the label

2 checks
Root, flower or puerarin

Alcohol trials used root extracts standardized to isoflavones or pure puerarin; the larger menopause trial used kudzu flower mixed with mandarin peel. Results from one do not transfer to the others.249

Not Pueraria mirifica

Pueraria lobata (kudzu) is a different plant from Pueraria mirifica, a Thai herb sold for breast and menopause claims.8

Frequently asked questions

Short answers to common questions; the numbers link to the sources below.

Common questions

6 answers
Can kudzu help someone quit drinking?

Not on current evidence. Kudzu cut drinking in small trials of heavy drinkers not seeking treatment, but in two trials of people in alcohol treatment it did no better than placebo: heavy drinking days fell 30% with kudzu and 44% with placebo over 8 weeks (19 people), and a 38-person VA trial found no difference.256

Does kudzu help hangovers?

Kudzu alone has not been tested for hangovers. Korean trials tested drinks combining Hovenia dulcis with a small amount of kudzu extract, so any effect cannot be credited to kudzu.13

Is kudzu estrogenic?

Its isoflavones show estrogen-like activity in lab assays. In menopausal women, a root extract (100 mg isoflavones a day for 3 months) did not change FSH or LH, and a 12-week flower blend trial found no hormone changes.10189

What are the side effects of kudzu?

Small trials of 4 to 12 weeks reported no serious adverse events, and one found no changes in liver or kidney tests. Case reports describe liver injury in a man also taking mistletoe and kidney inflammation in a woman drinking kudzu root juice.2591214

Is kudzu safe to take long term?

Unknown. The longest trials ran 12 weeks (a flower blend) or 3 months (root extract), so there are no long-term safety data. Memorial Sloan Kettering advises people with hormone-sensitive cancer or on tamoxifen to avoid it.91814

Is kudzu the same as Pueraria mirifica?

No. Kudzu is Pueraria lobata; Pueraria mirifica is a different Thai species with different compounds and claims.8

Sources

22 sources: trial abstracts, NIH fact sheets and reference databases. Numbers in the text link here.

Sources cited on this page

22 sources
  1. 1An extract of the Chinese herbal root kudzu reduces alcohol drinking by heavy drinkers in a naturalistic setting.Crossover RCT Alcohol Clin Exp Res, 2005 · PMID 15897719
  2. 2A standardized kudzu extract (NPI-031) reduces alcohol consumption in nontreatment-seeking male heavy drinkers.RCT Psychopharmacology (Berl), 2013 · PMID 23070022
  3. 3A single dose of kudzu extract reduces alcohol consumption in a binge drinking paradigm.RCT Drug Alcohol Depend, 2015 · PMID 26048637
  4. 4The isoflavone puerarin reduces alcohol intake in heavy drinkers: a pilot study.Crossover RCT Drug Alcohol Depend, 2012 · PMID 22578529
  5. 5Effects of kudzu extract on alcohol consumption among men and women seeking treatment for alcohol use disorder.RCT Drug Alcohol Depend Rep, 2026 · PMID 42779941
  6. 6A pilot study exploring the effect of kudzu root on the drinking habits of patients with chronic alcoholism.RCT J Altern Complement Med, 2000 · PMID 10706235
  7. 7Kudzu extract treatment does not increase the intoxicating effects of acute alcohol in human volunteers.Crossover RCT Alcohol Clin Exp Res, 2011 · PMID 21244439
  8. 8The Efficacy and Safety of Multiple Dose Regimens of Kudzu (Pueraria lobata) Root Extract on Bone and Cartilage Turnover and Menopausal Symptoms.Open-label trial Front Pharmacol, 2021 · PMID 34744740
  9. 9Efficacy and Safety of Kudzu Flower-Mandarin Peel on Hot Flashes and Bone Markers in Women during the Menopausal Transition: A Randomized Controlled Trial.RCT Nutrients, 2020 · PMID 33105861
  10. 10Analysis of the estrogenic components in kudzu root by bioassay and high performance liquid chromatography.Animal study J Steroid Biochem Mol Biol, 2005 · PMID 15857757
  11. 11MDR1 and OAT1/OAT3 mediate the drug-drug interaction between puerarin and methotrexate.Animal study Pharm Res, 2014 · PMID 24242937
  12. 12Liver injury induced by herbal extracts containing mistletoe and kudzu.Observational J Altern Complement Med, 2015 · PMID 25668233
  13. 13Efficacy of Hovenia dulcis Fruit Extract in Hangover Mitigation: Double-Blind Randomized Clinical Evaluation.Crossover RCT Foods, 2024 · PMID 39767027
  14. 14Kudzu: Purported Benefits, Side Effects & More (About Herbs)Fact sheet Memorial Sloan Kettering Cancer Center, 2022 · mskcc.org
  15. 15Radix Puerariae lobatae (Gegen) suppresses the anticoagulation effect of warfarin: a pharmacokinetic and pharmacodynamics study.Animal study Chin Med, 2016 · PMID 26925159
  16. 16Effect of puerarin supplementation on cardiovascular disease risk factors: A randomized, double-blind, placebo-controlled, 2-way crossover trial.Crossover RCT Biomed Pharmacother, 2022 · PMID 36076498
  17. 17Consumption of Pueraria flower extract reduces body mass index via a decrease in the visceral fat area in obese humans.RCT Biosci Biotechnol Biochem, 2012 · PMID 22878195
  18. 18Comparison of Pueraria lobata with hormone replacement therapy in treating the adverse health consequences of menopause.RCT Menopause, 2003 · PMID 12851519
  19. 19Efficacy and safety of puerarin injection as an adjunctive therapy for chronic heart failure: a systematic review and meta-analysis.Meta-analysis Front Pharmacol, 2025 · PMID 40391374
  20. 20Chinese and other Asian Herbal MedicinesDatabase LiverTox (NCBI Bookshelf), 2022 · ncbi.nlm.nih.gov
  21. 21MistletoeDatabase LiverTox (NCBI Bookshelf), 2022 · ncbi.nlm.nih.gov
  22. 22The effects of puerarin on CYP2D6 and CYP1A2 activities in vivo.PK study Arch Pharm Res, 2010 · PMID 20195825

What changed

Every dated change to this page: what changed, who made it and why.

Change log

3 entries
Dated changes to this page
DateChangeWho and why
evidence, summary, key facts, studied doses, who should avoid, interactions, FAQ, questions, time to effect, relatedAdded a 217-man puerarin crossover trial on heart risk factors (no clear change), a 12-week kudzu flower trial on BMI and visceral fat, a 127-woman root-versus-hormone-therapy menopause trial, and a 2025 meta-analysis of intravenous puerarin in heart failure (marked as clinical use). Added the LiverTox Chinese herbal medicines and Mistletoe chapters to the liver note, a kidney case the diabetes-medicine interaction from Memorial Sloan Kettering and the CYP2D6/CYP1A2 interaction from an 18-man puerarin study, and a cited pregnancy and breastfeeding note (no LactMed entry, no NCCIH page, no data). Rewrote the FAQ around side effects and long-term safety, added page questions, a time-to-effect row and links. PubMed search found no kudzu meta-analysis of oral use; reviews of intravenous puerarin for stroke and angina and preclinical reviews were not added.Writer: Kymata Health EditorialTrigger: A–Z audit against docs/supplements/AUDIT-STANDARD.md
allInitial editorial evidence review (first draft). Every PMID checked against NCBI E-utilities esummary (titles and years taken from the record, none retracted) and the abstract read for each cited row. Studied doses are reported as research doses, not dosing advice.Writer: Kymata Health EditorialTrigger: new page
evidence, safetyAdversarial review: single small alcohol trials regraded C to D and the two small negative treatment trials regraded from no-effect to D (no effect seen, but too small to rule one out), per the methodology grade rules; estrogen wording limited to lab assays; added warfarin (rat study) and tamoxifen (MSKCC) cautions; methotrexate signal stated as animal-only.Writer: Kymata Health EditorialTrigger: adversarial review

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