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Dietary supplement

Horse Chestnut 400 mg Ingredients & Drug Interactions

by Solaray

Horse Chestnut 400 mg label
See full label image
Capsule Category: Botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Horse Chestnut 400 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

Horse Chestnut 400 mg is a dietary supplement by Solaray with 2 active ingredients. Its ingredients are commonly taken for chronic venous insufficiency, leg swelling and heaviness, varicose veins.Based on those ingredients, 276 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Butcher's Broom, Horse Chestnut Seed Extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Horse Chestnut 400 mg by Solaray

Ask about any prescription or over-the-counter medication and we check it for interactions with Horse Chestnut 400 mg by Solaray — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Horse Chestnut 400 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 6, 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.
  • “Horse Chestnut Seed Extract” is listed as a grouped ingredient — the label gives one combined amount (400 mg) without saying how much of each component you get.

This product contains two active ingredients: horse chestnut seed extract and butcher's broom. Horse chestnut is a traditional botanical used for circulation support; butcher's broom is another plant extract traditionally used for venous health.

The product also contains inactive ingredients — cellulose, maltodextrin, and rice bran extract — which serve as fillers and capsule material.

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
Moderate

Some clinical evidence supports this product's ingredients for its stated purpose, but it isn't conclusive.

Why this rating?
  • The label markets this product for: Venous health and leg circulation support.
  • We looked for evidence on: Chronic venous insufficiency (CVI), Varicose veins, Hemorrhoids, Postoperative swelling, leg edema, venous insufficiency symptoms.
  • The strongest evidence on file: Butcher's Broom is rated "Possibly Effective" for Chronic venous insufficiency (CVI) (Natural Medicines).
  • Also on file: Butcher's Broom is rated "Insufficient Reliable Evidence To Rate" for Hemorrhoids, Varicose veins.

Butcher's broom is possibly effective for chronic venous insufficiency (a condition where veins have trouble moving blood back up the legs). For other uses listed on this product — such as diabetic retinopathy, hemorrhoids, low blood pressure upon standing (orthostatic hypotension), and lymphedema — there isn't enough reliable evidence to say whether butcher's broom works.

The effectiveness rating for horse chestnut seed extract isn't included in the data we hold for this product.

The evidence, ingredient by ingredient Horse Chestnut Butcher's Broom

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.

Butcher's broom is generally well tolerated short-term in healthy adults, but long-term safety data is limited. The most common side effects when taken by mouth are diarrhea, upset stomach (dyspepsia), gastritis, heartburn, nausea, and vomiting.

One case report describes a person who developed severe vomiting and diarrhea after five days of use, leading to hospitalization. If applied to skin, butcher's broom can cause contact dermatitis (a rash) in sensitive people.

Safety during pregnancy and breastfeeding has not been established, so this product is best avoided if you're pregnant or nursing. Talk with your doctor or pharmacist about whether it's right for you if you're in either situation.

Side effects, ingredient by ingredient Horse Chestnut Butcher's Broom

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 — Butcher's Broom.
  • The most serious interaction on file is rated Moderate.
  • For scale: 158 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.

Check with your doctor or pharmacist before using this product if you take alpha-adrenergic agonists (decongestants and certain blood-pressure medications) or alpha-adrenergic antagonists (certain blood-pressure drugs) — butcher's broom may interfere with how they work.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

This product may help with chronic venous insufficiency, but butcher's broom can interact with blood-pressure and decongestant medications. If you take any drugs for blood pressure or use decongestants, clear it with your doctor or pharmacist first.

Avoid this product if you're pregnant or breastfeeding. It's generally well tolerated short-term, but long-term safety isn't well studied.

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

Assessment coverage: 1 of 2 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Mar 22, 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 Horse Chestnut 400 mg, straight from the product label.

Brand Solaray
Net contents 60 VegCap(s)
Market status On market
Date entered into DSLD Mar 22, 2023
DSLD ID 288085
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other
Intended target group(s) Vegan, Vegetarian, 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 Horse Chestnut 400 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 VegCap(s)
Maximum serving Sizes:
1 VegCap(s)
Servings per container
60
IngredientAmount% DV
Horse Chestnut Seed Extract400 mg--
Butcher's Broom55 mg--
Aescin72 mg--

Other ingredients: Cellulose, Maltodextrin, Rice Bran extract

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)

Solaray Est. 1973

Formulation

Vital extracts

+ Herbal support

Lab verified

Vegan

Formula

Horse chestnut 400 mg 18% aescin

FDA Statement of Identity

Dietary Supplement

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 1 VegCap 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

Horse Chestnut 400 mg by Solaray label

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

Horse Chestnut 400 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 Horse Chestnut 400 mg by Solaray

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

Serving size1 VegCap(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.

Horse Chestnut Seed Extract

Interacts with
122 drugs
400 mg per serving

Horse chestnut seed extract is most often used for chronic venous insufficiency, where standardized products may help reduce leg swelling, pain, and h...

Horse Chestnut Seed Extract monograph & interactions
  • › Aescin

Butcher's Broom

Interacts with
158 drugs
55 mg per serving

Butcher's broom is a plant extract most often used for circulation problems in the legs, such as chronic venous insufficiency, where some evidence sug...

Butcher's Broom monograph & interactions

Other (inactive) ingredients: Cellulose, Maltodextrin, Rice Bran extract. These complete the product’s ingredient list but are not active constituents.

Interaction report

Horse Chestnut 400 mg by Solaray Drug Interactions

Want to check YOUR meds against Horse Chestnut 400 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.

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276Drugs
276 Moderate

Ingredients driving the most interactions

Butcher's Broom 158
Horse Chestnut Seed Extract 122

Individual Drug Interactions

The ingredients in Horse Chestnut 400 mg interact with 276 drugs. Click any drug to see the details.

2 of the 2 ingredients in Horse Chestnut 400 mg interact with drugs. Each result below shows which ingredient is responsible. Butcher's Broom Horse Chestnut Seed Extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Horse Chestnut 400 mg with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.

Butcher's Broom2 drug types · 158 drugs

Alpha-Adrenergic Agonists

Theoretically, butcher's broom might increase the effects and adverse effects of alpha-adrenergic agonists.
Animal and in vitro studies show that butcher's broom has alpha-adrenergic agonist effects.

Likelihood Possible Evidence D
Alpha-Adrenergic Antagonists

Theoretically, butcher's broom might reduce the effects of alpha-adrenergic antagonists.
Animal and in vitro studies show that butcher's broom has alpha-adrenergic agonist effects.

Likelihood Possible Evidence D
Butcher's Broom full monograph & interactions

Horse Chestnut Seed Extract1 drug type · 122 drugs

Anticoagulant/Antiplatelet Drugs

Horse chestnut may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Horse chestnut contains the constituent esculin which has been shown to have antithrombotic effects. Therefore, horse chestnut might have antiplatelet effects. This has not been shown in humans.

Likelihood Possible Evidence D
Horse Chestnut Seed Extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Horse Chestnut 400 mg, from the product label.

Solaray

See all Solaray products
Name
Solaray
Pharmacist Counseling Corner

Horse Chestnut 400 mg by Solaray: Common Questions

Does Horse Chestnut 400 mg by Solaray interact with any medications?
Yes. Based on its ingredients, Horse Chestnut 400 mg has a known interaction with 276 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Horse Chestnut 400 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.
Does this product work for varicose veins or leg swelling?
Butcher's broom, one of the active ingredients here, is possibly effective for chronic venous insufficiency (a condition where veins have trouble moving blood back up). If you have varicose veins or swelling, ask your doctor whether this is the right choice for you.
Can I take this if I'm pregnant or nursing?
No. Safety hasn't been established during pregnancy or breastfeeding, so it's best to avoid this product in both situations. Talk with your doctor or pharmacist about safer options if you need support for circulation.
What side effects might I experience?
The most common side effects are diarrhea, nausea, vomiting, heartburn, and upset stomach. Most people tolerate it well short-term, but if you develop severe stomach symptoms, stop taking it and reach out to your doctor.
Is this safe to take long-term?
Short-term use is generally well tolerated, but we don't have solid data on long-term safety. If you're thinking about taking it for weeks or months, ask your doctor or pharmacist whether that's appropriate for you.
Does this product have any fillers?
Yes. In addition to the active ingredients, it contains cellulose, maltodextrin, and rice bran extract as inactive ingredients to fill and hold the capsule.

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.

Horse Chestnut 400 mg label
Go deeper

The Full Monographs Behind Horse Chestnut 400 mg’s Ingredients

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

Herb & supplement monograph

Horse Chestnut

Interacts with 122 drugs

Horse chestnut seed extract is most often used for chronic venous insufficiency, where standardized products may help reduce leg swelling, pain, and heaviness. Raw, unprocessed horse chestnu...

Read the full Horse Chestnut monograph → Herb & supplement monograph

Butcher's Broom

Interacts with 158 drugs

Butcher's broom is a plant extract most often used for circulation problems in the legs, such as chronic venous insufficiency, where some evidence suggests it may help reduce swelling and di...

Read the full Butcher's Broom monograph →
Sources

Sources & How We Checked

Horse Chestnut 400 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 29 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.

Horse Chestnut 21 references
  1. Blumenthal M, ed. The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines. Trans. S. Klein. Boston, MA: American Botanical Council, 1998.
  2. Ellenhorn MJ, et al. Ellenhorn's Medical Toxicology: Diagnoses and Treatment of Human Poisoning. 2nd ed. Baltimore, MD: Williams & Wilkins, 1997.
  3. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
  4. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
  5. Greeske K, Pohlmann BK. Horse chestnut seed extract-an effective therapy principle in general practice. Drug therapy of chronic venous insufficiency. Fortschr Med 1996;114:196-200.
  6. Robbers JE, Tyler VE. Tyler's Herbs of Choice: The Therapeutic Use of Phytomedicinals. New York, NY: The Haworth Herbal Press, 1999.
  7. Takegoshi K, Tohyama T, Okuda K, et al. A case of Venoplant-induced hepatic injury. Gastroenterol Jpn 1986;21:62-5.
  8. Jaspersen-Schib R, Theus L, Guirguis-Oeschger M, et al. [Serious plant poisonings in Switzerland 1966-1994. Case analysis from the Swiss Toxicology Information Center]. Schweiz Med Wochenschr 1996;126:1085-98.
  9. Popp W, Horak F, Jager S, et al. Horse chestnut (Aesculus hippocastanum) pollen: a frequent cause of allergic sensitization in urban children. Allergy 1992;47:380-3.
  10. Diaz-Perales A, Collada C, Blanco C, et al. Cross-reactions in the latex-fruit syndrome: A relevant role of chitinases but not of complex asparagine-linked glycans. J Allergy Clin Immunol 1999;104:681-7. PubMed
  11. Blanco C, Diaz-Perales A, Collada C, et al. Class I chitinases as potential panallergens involved in the latex-fruit syndrome. J Allergy Clin Immunol 1999;103:507-13. PubMed
  12. Comaish JS, Kersey PJ. Contact dermatitis to extract of horse chestnut (esculin). Contact Dermatitis 1980;6:150-1. PubMed
  13. Pittler MH, Ernst E. Horse chestnut seed extract for chronic venous insufficiency (Cochrane Review). In: The Cochrane Library, Issue 3, 2004. Chichester, UK: John Wiley & Sons, Ltd. PubMed
  14. Ottillinger, B. and Greeske, K. Rational therapy of chronic venous insufficiency--chances and limits of the therapeutic use of horse-chestnut seeds extract. BMC.Cardiovasc.Disord. 2001;1(1):5. PubMed
  15. Pittler, M. H. and Ernst, E. Horse chestnut seed extract for chronic venous insufficiency. Cochrane.Database.Syst.Rev. 2004;(2):CD003230. PubMed
  16. Fang, Y., Zhao, L., Yan, F., Xia, X., Xu, D., and Cui, X. Escin improves sperm quality in male patients with varicocele-associated infertility. Phytomedicine. 2010;17(3-4):192-196. PubMed
  17. De Smet, P. A., Van den Eertwegh, A. J., Lesterhuis, W., and Stricker, B. H. Hepatotoxicity associated with herbal tablets. BMJ 7-13-1996;313(7049):92.
  18. Rehn, D., Unkauf, M., Klein, P., Jost, V., and Lucker, P. W. Comparative clinical efficacy and tolerability of oxerutins and horse chestnut extract in patients with chronic venous insufficiency. Arzneimittelforschung 1996;46(5):483-487.
  19. Edem E, Kahyaoglu B, Çakar MA. Acute Effusive Pericarditis due to Horse Chestnut Consumption. Am J Case Rep. 2016;17:305-8. PubMed
  20. Costa Santos D, Lérias G, Madruga I. Drug-induced Liver Injury Due to a Horse Chestnut Dietary Supplement. Eur J Case Rep Intern Med 2021;8(3):002389. PubMed
  21. Yi HY, Lee JY. Poisoning due to consumption of horse chestnut seed. Clin Exp Emerg Med 2021;8(4):333-335. PubMed

See these in context on the Horse Chestnut monograph →

Butcher's Broom 8 references
  1. Beltramino R, Penenory A, Buceta AM. An open-label, randomized multicenter study comparing the efficacy and safety of Cyclo 3 Fort versus hydroxyethyl rutoside in chronic venous lymphatic insufficiency. Angiology 2000;51:535-44.. PubMed
  2. Redman DA. Ruscus aculeatus (butcher's broom) as a potential treatment for orthostatic hypotension, with a case report. J Altern Complement Med 2000;6:539-49..
  3. Landa, N., Aguirre, A., Goday, J., Raton, J. A., and Diaz-Perez, J. L. Allergic contact dermatitis from a vasoconstrictor cream. Contact Dermatitis 1990;22(5):290-291. PubMed
  4. Cluzan, R. V., Alliot, F., Ghabboun, S., and Pascot, M. Treatment of secondary lymphedema of the upper limb with CYCLO 3 FORT. Lymphology 1996;29(1):29-35.
  5. Parrado F, Buzzi A. A study of the efficacy and tolerability of a preparation containing Ruscus aculeatus in the treatment of chronic venous insufficiency of the lower limbs. Clin Drug Invest 1999;18(4):255-61. DOI
  6. Sadarmin PP, Timperley J. An unusual case of Butcher's Broom precipitating diabetic ketoacidosis. J Emerg Med 2013;45(3):e63-e65. PubMed
  7. Ramirez-Hernandez M, Garcia-Selles J, Merida-Fernandez C, Martinez-Escribano JA. Allergic contact dermatitis to ruscogenins. Contact Dermatitis 2006;54(1):60. PubMed
  8. European Medicines Agency. Assessment report on Ruscus Aculeatus L rhizome. EMEA/HMPC/261939/2007. London, September 4, 2008. Available at: http://www.ema.europa.eu/docs/en_GB/document_library/Herbal_-_HMPC_assessment_report/2009/12/WC500018288.pdf. Acces

See these in context on the Butcher's Broom 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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