Interactions on record — worth a quick check against your medications. Based on 1 of 2 ingredients. Check your meds →
Dietary supplement

Kudzu Extract 150 mg Ingredients & Drug Interactions

by Solaray

Kudzu Extract 150 mg label
See full label image
Capsule 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 Extract 150 mg 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 Extract 150 mg is a dietary supplement by Solaray with 2 active ingredients. 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. 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 Extract 150 mg by Solaray

Ask about any prescription or over-the-counter medication and we check it for interactions with Kudzu Extract 150 mg by Solaray — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Kudzu Extract 150 mg by Solaray

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 2 of its 2 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

This product contains 2 active ingredients: kudzu and kudzu root extract, both forms of the same plant. The remaining ingredients are the vegetable cellulose capsule itself and magnesium stearate, an inactive additive used to help manufacture the capsule.

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).

The evidence we hold shows that kudzu is possibly effective for alcohol use disorder. For allergic rhinitis (hay fever), angina, and back pain, the data we have is insufficient to rate its effectiveness — meaning we don't yet know whether it works for those uses.

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. In clinical trials, some participants reported nausea, upset stomach (dyspepsia), bloating, hives (urticaria), and dizziness — though these side effects didn't happen more often than with placebo.

There is one case report of a serious allergic reaction (a rash spreading across the body) after taking a combination herbal product containing kudzu, so allergic sensitivity is possible. Do not use kudzu during pregnancy — the safety data advises against it due to insufficient data and possible hormone-like effects.

Similarly, there is too little safety information to recommend use while breastfeeding. Talk with your doctor or pharmacist about whether this product is right for you in either situation.

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 Solaray Kudzu Extract, double-check with your doctor or pharmacist if you take a blood thinner or antiplatelet drug (like warfarin or aspirin), any medication that can harm the liver, estrogen therapy, tamoxifen, methotrexate, diabetes medication, or consume caffeine. The most serious risk is bleeding if you're on blood thinners.

Moderate interactions also exist with liver-stressing drugs, estrogen, tamoxifen, and methotrexate — which may become toxic at higher levels in your body.

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 Extract may help with alcohol use disorder, but it interacts with several important medication types and isn't safe in pregnancy or while breastfeeding. If you take a blood thinner, estrogen therapy, tamoxifen, methotrexate, diabetes medication, or rely on caffeine, check with your doctor or pharmacist before starting this product.

Long-term safety data is limited, so stick with short-term use and report any new symptoms.

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

Assessment coverage: 2 of 2 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Sep 24, 2021.

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 Extract 150 mg, straight from the product label.

Brand Solaray
Barcode (UPC) 076280036800
Net contents 60 Vegetarian Capsule(s)
Market status On market
Date entered into DSLD Sep 24, 2021
DSLD ID 255535
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years)
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 Extract 150 mg by Solaray, 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:
1 Vegetarian Capsule(s)
Maximum serving Sizes:
1 Vegetarian Capsule(s)
Servings per container
60
UPC/BARCODE
076280036800
IngredientAmount% DV
Kudzu165 mg--
Kudzu root extract150 mg--

Other ingredients: Vegetable Cellulose Capsule, Magnesium Stearate

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.
FDA Statement of Identity

Dietary Supplement

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

Formulation

Guaranteed potency

Kudzu root is used in both Japanese cooking and in Traditional Chinese Medicine.

Seals/Symbols

Green Screened – Represents the Solaray brand’s commitment to providing herbs of the utmost quality.

Formula

2% Daidzin

Discussion: Native to many Asiatic countries, kudzu is a climbing vine that belongs to the pea family. It grows very rapidly and produces large, fibrous root in the process.

Precautions

Warning: Do not use if safety seal is broken or missing.

Keep out of reach of children.

Keep your licensed health care practitioner informed when using this product.

Suggested/Recommended/Usage/Directions

Directions: Use only as directed. Take one vegetarian capsule daily with a meal or glass of water.

Storage

Store in a cool, dry place.

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

See for yourself

Kudzu Extract 150 mg by Solaray label

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

Kudzu Extract 150 mg 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 Extract 150 mg by Solaray

These are the 2 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 Vegetarian Capsule(s) Dosage formCapsule Servings per container60 Amounts shown are per serving.

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

Kudzu

Interacts with
584 drugs
165 mg per serving

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 monograph & interactions

Kudzu root extract

Interacts with
584 drugs
150 mg per serving Form: Daidzin

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 monograph & interactions

Other (inactive) ingredients: Vegetable Cellulose Capsule, Magnesium Stearate. These complete the product’s ingredient list but are not active constituents.

Interaction report

Kudzu Extract 150 mg by Solaray Drug Interactions

Want to check YOUR meds against Kudzu Extract 150 mg?

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 584

Individual Drug Interactions

The ingredients in Kudzu Extract 150 mg interact with 584 drugs. Click any drug to see the details.

1 of the 2 ingredients in Kudzu Extract 150 mg interact with drugs. Each result below shows which ingredient is responsible. Kudzu

Each ingredient & the kinds of drugs it affects

For each ingredient in Kudzu Extract 150 mg 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.

Kudzu7 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 full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Kudzu Extract 150 mg, from the product label.

Solaray

See all Solaray products
Name
Nutraceutical Corp.
Web Address
www.nutrafamily.com
Pharmacist Counseling Corner

Kudzu Extract 150 mg by Solaray: Common Questions

Does Kudzu Extract 150 mg by Solaray interact with any medications?
Yes. Based on its ingredients, Kudzu Extract 150 mg 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 Extract 150 mg contains 2 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is 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 to take while I'm pregnant or nursing?
No — the safety data advises against using kudzu during pregnancy because there isn't enough information and because kudzu may have hormone-like effects on the body. There's also too little safety information to recommend it while breastfeeding. Talk with your doctor or pharmacist for personalized advice if you're considering it in either situation.
What side effects did people report in the studies?
In clinical trials, some participants reported nausea, upset stomach, bloating, hives, and dizziness. However, these side effects didn't occur more often than in the placebo group. There is also one case report of a serious allergic rash from a combination product containing kudzu.
Does this product really work for alcohol cravings?
Kudzu is rated possibly effective for alcohol use disorder based on the evidence we hold, meaning there is some support for it but more research is needed. Talk with your doctor about whether it might help as part of your treatment plan.
Why does kudzu interact with so many medications?
Kudzu contains active compounds called isoflavones that have multiple effects: they can act like estrogen in your body, slow how your liver breaks down certain drugs (including caffeine), have antiplatelet activity that increases bleeding risk, and may slow the clearance of drugs like methotrexate. These properties create several theoretical interaction pathways.
Can I take this with my birth control pills or hormone therapy?
Not without checking first — kudzu may have estrogenic effects that could either enhance or interfere with how your hormone therapy works. Talk with your doctor or pharmacist before combining them.

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 Extract 150 mg label
Go deeper

The Full Monographs Behind Kudzu Extract 150 mg’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 Extract 150 mg'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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