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Dietary supplement

Kudzu Ingredients & Drug Interactions

by Hawaii Pharm

Kudzu label
See full label image
Liquid Category: Botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Kudzu against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Kudzu is a dietary supplement by Hawaii Pharm with 1 active ingredient. Its ingredients are commonly taken for alcohol cravings and reduction, menopausal symptoms, heart and blood vessel health.Based on those ingredients, 584 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Kudzu Root Extract, Dry. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Kudzu by Hawaii Pharm

Ask about any prescription or over-the-counter medication and we check it for interactions with Kudzu by Hawaii Pharm — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Kudzu by Hawaii Pharm

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Aug 13, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This product contains one active ingredient: Kudzu Root Extract (dried and concentrated). Kudzu is a plant used in traditional medicine, and the extract here is delivered in a liquid form with alcohol, water, and glycerin as inactive ingredients.

Does it work?

Moderate evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed

This product doesn't appear to be marketed for a specific use, so we graded Kudzu's overall clinical evidence instead.

Moderate

Some clinical evidence supports Kudzu for:

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.
  • Since the label doesn't commit to one use, we graded the ingredient's overall clinical evidence instead.
  • On file: Alcohol use disorder — rated "Possibly Effective" (Natural Medicines).

Kudzu is possibly effective for alcohol use disorder based on available research. For other uses — hay fever, angina, and back pain — the evidence in our data is insufficient to rate how well it works.

The evidence, ingredient by ingredient Kudzu

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Kudzu is generally well tolerated in short-term studies, but long-term safety hasn't been established, so we don't have a clear picture of how it behaves with prolonged use. The most common side effects reported in trials — nausea, indigestion, bloating, dizziness, and rash — did not occur more often than with placebo.

One case report describes an allergic reaction involving a spreading rash, though this is rare. Pregnancy and breastfeeding: the safety data advises against use during pregnancy because of possible hormone-like effects and insufficient information.

There isn't enough information to recommend this product while breastfeeding either — talk with your doctor or pharmacist for personalized guidance if you're pregnant or nursing.

Side effects, ingredient by ingredient Kudzu

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Kudzu.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; diabetes medications.
  • For scale: 585 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before taking this product, double-check with your doctor or pharmacist if you're on blood thinners or antiplatelet drugs (like warfarin or aspirin for clotting prevention), estrogen therapy or tamoxifen, diabetes medications, methotrexate, or drugs that affect the liver. Also flag any regular caffeine use, since kudzu may raise caffeine levels.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with some supporting evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.

Kudzu may help with alcohol use disorder, but it interacts with blood thinners, hormone therapy, diabetes drugs, methotrexate, and caffeine, among others. If you take any prescription medication — especially anything that affects clotting, hormones, blood sugar, or cancer treatment — check with your doctor or pharmacist before starting this product.

Long-term safety data is limited, so this is best used short-term under guidance.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Oct 24, 2023.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Kudzu, straight from the product label.

Brand Hawaii Pharm
Barcode (UPC) 840253631398
Net contents 4 Fluid Ounce(s); 120 mL
Market status On market
Date entered into DSLD Oct 24, 2023
DSLD ID 301772
Product type Botanical
Supplement form Liquid
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Kudzu by Hawaii Pharm, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
0.7 mL
Maximum serving Sizes:
1 mL
Servings per container
120
UPC/BARCODE
840253631398
IngredientAmount% DV
Kudzu Root Extract, Dry983 mg--

Other ingredients: Alcohol, Water, Glycerin

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Brand IP Statement(s)

Hawaii Pharm Herbal Extract Highest quality since 2008

Suggested/Recommended/Usage/Directions

Suggested use: Shake well before using. For adults add about 20-30 drops (0.7-1 mL, one full squeeze of the dropper bulb) to some juice or water, up to 4 times a day.

Precautions

Warning: We recommend to seek expert medical advice before taking.

Do not use if you are allergic to any ingredients.

Consult your physician before giving to children under 18, during pregnancy, if nursing or taking medications.

Consult your physician before giving to children under 18, during pregnancy, if nursing or taking medications.

May affect the ability to drive and operate machinery. May have contraindications, can cause side effects and adverse reactions. Do not use if seal is broken or missing.

Keep out of the reach of children!

Storage

Store in a cool dry place.

Seals/Symbols

cGMP Made in compliance with cGMP 21 CFR 111 in an FDA registered and inspected facility.

Organic Alcohol Based USA Made in United States of America

FDA Disclaimer Statement

This product has not been evaluated by the FDA and is not intended to diagnose, treat, cure or prevent any disease.

General Statements

Scan this QR-code to get 15% discount on your next purchase. Limited time deal.

Formula

Pueraria lobata

Organic Alcohol Based

Formulation

Only natural ingredients Purity is laboratory tested and verified

All the raw materials are gluten-free by their nature No artificial colors, flavors, or preservatives

Not tested on animals

Organic Alcohol Based

Made in USA, Hawaii

FDA Statement of Identity

Herbal Supplement

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Kudzu by Hawaii Pharm label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Kudzu label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Kudzu by Hawaii Pharm

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size0.7 mL Dosage formLiquid Servings per container120 Amounts shown are per serving.

Kudzu Root Extract, Dry

Interacts with
584 drugs
983 mg per serving Form: Pueraria lobata Root Extract, Dry

Kudzu is a fast-growing vine whose root has long been used in traditional Chinese medicine and is now studied mostly for reducing alcohol intake. Earl...

Kudzu Root Extract, Dry monograph & interactions

Other (inactive) ingredients: Alcohol, Water, Glycerin. These complete the product’s ingredient list but are not active constituents.

Interaction report

Kudzu by Hawaii Pharm Drug Interactions

Want to check YOUR meds against Kudzu?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
584Drugs
512 Moderate 72 Minor

Ingredients driving the most interactions

Kudzu Root Extract, Dry 584

Individual Drug Interactions

The ingredients in Kudzu interact with 584 drugs. Click any drug to see the details.

1 of the 1 ingredient in Kudzu interact with drugs. Each result below shows which ingredient is responsible. Kudzu Root Extract, Dry

Each ingredient & the kinds of drugs it affects

For each ingredient in Kudzu with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Kudzu Root Extract, Dry7 drug types · 584 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, kudzu may increase the risk of bleeding if used with antiplatelet or anticoagulant drugs.
Kudzu isoflavones are reported to have antiplatelet activity.

Likelihood Possible Evidence D
Caffeine

Theoretically, taking kudzu with caffeine might increase levels of caffeine.
In healthy males injected with the kudzu constituent puerarin, caffeine clearance and metabolism is inhibited. This effect has been attributed to inhibition of cytochrome P450 1A2 (CYP1A2) enzyme, which is involved in caffeine metabolism. It is unclear if taking kudzu orally would have this same effect.

Likelihood Probable Evidence D
Estrogens

Theoretically, kudzu might alter the effects of estrogen therapy.
Some research suggests that kudzu has estrogenic effects. This may enhance or inhibit the effects of estrogen therapy.

Likelihood Possible Evidence B
Hepatotoxic Drugs

Theoretically, concomitant use might have additive hepatotoxic effects.
There is some concern that kudzu can adversely affect the liver.

Likelihood Possible Evidence D
Methotrexate (Trexall, Others)

Theoretically, taking kudzu with methotrexate might increase the risk of methotrexate toxicity.
Preclinical research suggests that kudzu extract greatly reduces the elimination and increases the toxicity of methotrexate. Kudzu might inhibit organic anion transporters (OATs) that are responsible for hepatobiliary and renal excretion of anions, similar to the interaction between methotrexate and non-steroidal anti-inflammatory drugs (NSAIDs).

Likelihood Possible Evidence D
Tamoxifen (Nolvadex)

Theoretically, kudzu might interfere with tamoxifen activity.
Some research suggests that kudzu may have estrogenic effects.

Likelihood Possible Evidence B
Antidiabetes Drugs

Theoretically, taking kudzu with antidiabetes drugs might increase the risk of hypoglycemia.
Kudzu might lower blood glucose levels and have additive effects in patients treated with antidiabetic agents. The dose of diabetes medications might need to be adjusted.

Likelihood Unlikely Evidence D
Kudzu Root Extract, Dry full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Kudzu, from the product label.

Hawaii Pharm

See all Hawaii Pharm products
Name
Hawaii Pharm LLC
Street Address
510 Sumner St. Ste. 613
City
Honolulu
State
HI
ZipCode
96817
Phone Number
888-854-2924
Web Address
www.hawaiipharm.com
Pharmacist Counseling Corner

Kudzu by Hawaii Pharm: Common Questions

Does Kudzu by Hawaii Pharm interact with any medications?
Yes. Based on its ingredients, Kudzu has a known interaction with 584 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Kudzu contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Is Kudzu safe during pregnancy or breastfeeding?
No — the safety data advises against use in pregnancy because of possible hormone-like effects and insufficient information. The same goes for breastfeeding. Talk with your doctor or pharmacist if you're pregnant, planning to become pregnant, or nursing.
What side effects does Kudzu have?
Nausea, indigestion, bloating, dizziness, and rash have been reported in trials, but they occurred no more often than placebo. One rare case report describes an allergic reaction with a spreading rash. Stop use and contact your doctor if you develop an unusual rash or have trouble breathing.
Does Kudzu actually work for alcohol use disorder?
Yes — it's rated possibly effective for alcohol use disorder based on available research. For other uses like hay fever or angina, we don't have enough evidence to know if it works.
Can I take this long-term?
The safety data we have covers short-term use. Long-term safety hasn't been well established, so talk with your doctor or pharmacist about how long it's reasonable to take this product.
What does the alcohol in this liquid product do?
Alcohol is used as a preservative and solvent in the liquid form to keep the kudzu extract stable and concentrated.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

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Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Kudzu label
Go deeper

The Full Monographs Behind Kudzu’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Kudzu

Interacts with 584 drugs

Kudzu is a fast-growing vine whose root has long been used in traditional Chinese medicine and is now studied mostly for reducing alcohol intake. Early research is promising for cutting back...

Read the full Kudzu monograph →
Sources

Sources & How We Checked

Kudzu's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 21 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Kudzu 21 references
  1. Woo J, Lau E, Ho SC, et al. Comparison of Pueraria lobata with hormone replacement therapy in treating the adverse health consequences of menopause. Menopause 2003;10:352-61. PubMed
  2. Akita H, Sowa J, Makiura M, et al. Maculopapular drug eruption due to the Japanese herbal medicine Kakkonto (kudzu or arrowroot decoction). Contact Dermatitis 2003;48:348-9. PubMed
  3. Luo ZR, Zheng B. [Effect of Puerarin on platelet activating factors CD63 and CD62P, plasminogen activator inhibitor and C-reactive protein in patients with unstable angia pectoris]. Zhongguo Zhong Xi Yi Jie He Za Zhi 2001;21:31-3 .
  4. Lee KT, Sohn IC, Kim DH, et al. Hypoglycemic and hypolipidemic effects of tectorigenin and kaikasaponin III in the streptozotocin-lnduced diabetic rat and their antioxidant activity in vitro. Arch Pharm Res 2000;23:461-6.
  5. Yu Z, Zhang G, Zhao H. [Effects of Puerariae isoflavone on blood viscosity, thrombosis and platelet function]. Zhong Yao Cai 1997;20:468-9.
  6. Hsu FL, Liu IM, Kuo DH, et al. Antihyperglycemic effect of puerarin in streptozotocin-induced diabetic rats. J Nat Prod 2003;66:788-92. PubMed
  7. Chiang HM, Fang SH, Wen KC, et al. Life-threatening interaction between the root extract of Pueraria lobata and methotrexate in rats. Toxicol Appl Pharmacol 2005;209:263-8.
  8. Zheng, J., Chen, B., Jiang, B., Zeng, L., Tang, Z. R., Fan, L., and Zhou, H. H. The effects of puerarin on CYP2D6 and CYP1A2 activities in vivo. Arch Pharm Res 2010;33(2):243-246. PubMed
  9. Hsu, H. H., Chang, C. K., Su, H. C., Liu, I. M., and Cheng, J. T. Stimulatory effect of puerarin on alpha1A-adrenoceptor to increase glucose uptake into cultured C2C12 cells of mice. Planta Med 2002;68(11):999-1003.
  10. Zheng, G., Zhang, X., Zheng, J., Meng, Q., and Zheng, D. [Estrogen-like effects of puerarin and total isoflavones from Pueraria lobata]. Zhong.Yao Cai. 2002;25(8):566-568.
  11. Qi, B. L. and Qi, B. M. [Effect of the purariae-isofiavones on estrogen level in normal and ovariectomized rats]. Zhongguo Zhong.Yao Za Zhi. 2002;27(11):850-852.
  12. Akita, H., Sowa, J., Makiura, M., Akamatsu, H., and Matsunaga, K. Maculopapular drug eruption due to the Japanese herbal medicine Kakkonto (kudzu or arrowroot decoction). Contact Dermatitis 2003;48(6):348-349. PubMed
  13. Manonai, J., Chittacharoen, A., Theppisai, U., and Theppisai, H. Effect of Pueraria mirifica on vaginal health. Menopause. 2007;14(5):919-924. PubMed
  14. Chandeying, V. and Sangthawan, M. Efficacy comparison of Pueraria mirifica (PM) against conjugated equine estrogen (CEE) with/without medroxyprogesterone acetate (MPA) in the treatment of climacteric symptoms in perimenopausal women: phase III study. J M
  15. Virojchaiwong, P., Suvithayasiri, V., and Itharat, A. Comparison of Pueraria mirifica 25 and 50 mg for menopausal symptoms. Arch.Gynecol.Obstet. 2011;284(2):411-419. PubMed
  16. Hou, Q., Ao, X., Li, G., and Zhang, Y. [Puerarin combined with avandia for diabetic nephropathy]. Zhong.Nan.Da.Xue Xue Bao Yi Xue Ban. 2012;37(1):73-77.
  17. Kim HJ, Kim H, Ahn JH, Suk JH. Liver injury induced by herbal extracts containing mistletoe and kudzu. J Altern Complement Med 2015;21(3):180-5. PubMed
  18. Santosh N, Mohan K, Royana S, Yamini TB. Hepatotoxicity of tubers of Indian Kudzu (Pueraria tuberosa) in rats. Food Chem Toxicol. 2010 Apr;48(4):1066-71. PubMed
  19. Teschke R, Zhang L, Long H, Schwarzenboeck A, Schmidt-Taenzer W, Genthner A, Wolff A, Frenzel C, Schulze J, Eickhoff A. Traditional Chinese Medicine and herbal hepatotoxicity: a tabular compilation of reported cases. Ann Hepatol. 2015 Jan-Feb;14(1):7-19. DOI
  20. Wang D, Qiu L, Wu X, Wei H, Xu F. Evaluation of kudzu root extract-induced hepatotoxicity. J Ethnopharmacol. 2015 Dec 24;176:321-6. PubMed
  21. Warinsiriruk P, Tantitham C, Cherdshewasart W, Shobeiri SA, Manonai J. Effects of Pueraria mirifica on vaginal artery vascularization in postmenopausal women with genitourinary syndrome of menopause. Maturitas 2022;160:4-10. PubMed

See these in context on the Kudzu monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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