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Dietary supplement

Devil's Claw 510 mg Ingredients & Drug Interactions

by Vitamin World

Devil's Claw 510 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 Devil's Claw 510 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

Devil's Claw 510 mg is a dietary supplement by Vitamin World with 1 active ingredient. Its ingredients are commonly taken for osteoarthritis pain, lower back pain, joint pain and stiffness.Based on those ingredients, 804 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Devil's Claw. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Devil's Claw 510 mg by Vitamin World

Ask about any prescription or over-the-counter medication and we check it for interactions with Devil's Claw 510 mg by Vitamin World — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Devil's Claw 510 mg by Vitamin World

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 Jul 23, 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.

Devil's Claw 510 mg contains one active ingredient: devil's claw, a plant extract traditionally used for joint and digestive support. The capsule also contains inactive ingredients—gelatin, vegetable magnesium stearate, and silica—which are standard binders and fillers that help form and stabilize 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
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: Joint health.
  • We looked for evidence on: Osteoarthritis, Back pain, Rheumatoid arthritis (RA), Tendinopathy, Joint pain and stiffness, General inflammation.
  • The strongest evidence on file: Devil's Claw is rated "Possibly Effective" for Back pain (Natural Medicines).
  • Also on file: Devil's Claw is rated "Possibly Effective" for Osteoarthritis.
  • Also on file: Devil's Claw is rated "Insufficient Reliable Evidence To Rate" for Rheumatoid arthritis (RA), Tendinopathy.

Devil's claw is possibly effective for back pain and osteoarthritis, based on the evidence we have on file. The data we hold does not establish reliable evidence for atherosclerosis.

If you're considering it for back pain or joint discomfort, it may be worth a conversation with your doctor about how it fits into your overall care plan.

The evidence, ingredient by ingredient Devil's Claw

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.

Devil's claw is generally well tolerated for short-term use in healthy adults, but digestive upset is the most common side effect. Some people report diarrhea, indigestion, nausea, or loss of taste—especially at higher doses.

Rarely, gastrointestinal bleeding and headache, dizziness, or ringing in the ears have been reported, though it's unclear whether these came from the supplement itself. Avoid devil's claw during pregnancy because it may affect the uterus and safety has not been established.

Do not use it while breastfeeding, as there is not enough safety information. If you're pregnant, planning pregnancy, or nursing, talk with your doctor or pharmacist before taking this product.

Side effects, ingredient by ingredient Devil's Claw

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 — Devil's Claw.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs.
  • For scale: 805 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 you take this, double-check with your own doctor or pharmacist if you're on warfarin or any blood thinner (Moderate risk). Also confirm that you're not on drugs metabolized by CYP2C19, CYP2C9, or CYP3A4 liver enzymes (Moderate risk).

If you take acid-suppressing medications like H2-blockers or proton pump inhibitors, those are also worth reviewing (Minor risk).

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.

Devil's Claw 510 mg may help with back pain or osteoarthritis if you tolerate it well and don't have digestive sensitivities. The main concern is its potential to interact with blood thinners (especially warfarin) and enzymes that clear many prescription drugs, so you'll need to clear it with your own doctor or pharmacist first.

Avoid it entirely if you're pregnant or breastfeeding.

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 May 24, 2013.

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 Devil's Claw 510 mg, straight from the product label.

Brand Vitamin World
Barcode (UPC) 074312733307
Net contents 100 Rapid Release Capsule(s)
Market status On market
Date entered into DSLD May 24, 2013
DSLD ID 21056
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten Free, Dairy Free, Sugar 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 Devil's Claw 510 mg by Vitamin World, 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:
3 Capsule(s)
Maximum serving Sizes:
3 Capsule(s)
Servings per container
33
UPC/BARCODE
074312733307
IngredientAmount% DV
Devil's Claw1530 mg--

Other ingredients: Gelatin, Vegetable Magnesium Stearate, Silica

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.
Formulation

No Artificial Color, Flavor or Sweetener, No Preservatives, No Sugar, No Starch, No Milk, No Lactose, No Soy, No Gluten, No Wheat, No Yeast, No Fish. Sodium Free.

Vitamin World’s preservative-free gelatin capsules contain pure milled herb powder.

Brand IP Statement(s)

Get healthy.

(C)2013 Vitamin World, Inc.

General Statements

Traditionally Used for Joint Health*

NATURAL WHOLE HERB

Vitamin World’s Guarantee: We use only the finest quality herbs and spices. Each is screened and finely milled for quick release.

Vitamin World’s Natural Whole Herb products utilize ground plant parts to provide the natural components found in nature. Devil’s Claw contains harpagoside, a glycoside which helps contribute to the herb’s ability to support joint health.*

Vitamin World products are subject to critically stringent quality assurance analysis. Our state-of-the-art laboratory, manufacturing and packaging facilities insure the highest quality nutritional supplements money can buy. Your health & safety are our first priority!

FDA Statement of Identity

Herbal Supplement

Suggested/Recommended/Usage/Directions

DIRECTIONS: For adults, take three (3) capsules three times daily, preferably with meals. Capsules may be opened and prepared as a tea.

General

PROD. #3330 B3330 11E

Precautions

WARNING: If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use.

Discontinue use and consult your doctor if any adverse reactions occur.

Not intended for use by persons under the age of 18. Keep out of reach of children.

Do not use if seal under cap is broken or missing.

Storage

Store at room temperature.

FDA Disclaimer Statement

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Seals/Symbols

QA QUALITY ASSURED

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

See for yourself

Devil's Claw 510 mg by Vitamin World label

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

Devil's Claw 510 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 Devil's Claw 510 mg by Vitamin World

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

Serving size3 Capsule(s) Dosage formCapsule Servings per container33 Amounts shown are per serving.

Devil's Claw

Interacts with
804 drugs
1530 mg per serving

Devil's claw is a southern African plant used mainly for arthritis and back pain, and some studies suggest it may help ease these types of discomfort....

Devil's Claw monograph & interactions

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

Interaction report

Devil's Claw 510 mg by Vitamin World Drug Interactions

Want to check YOUR meds against Devil's Claw 510 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
804Drugs
731 Moderate 73 Minor

Ingredients driving the most interactions

Devil's Claw 804

Individual Drug Interactions

The ingredients in Devil's Claw 510 mg interact with 804 drugs. Click any drug to see the details.

1 of the 1 ingredient in Devil's Claw 510 mg interact with drugs. Each result below shows which ingredient is responsible. Devil's Claw

Each ingredient & the kinds of drugs it affects

For each ingredient in Devil's Claw 510 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.

Devil's Claw7 drug types · 804 drugs

Cytochrome P450 2C19 (Cyp2C19) Substrates

Theoretically, devil's claw might increase levels of drugs metabolized by CYP2C19.
In vitro research shows that devil's claw might inhibit CYP2C19, although this has not been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2C9 (Cyp2C9) Substrates

Theoretically, devil's claw might increase levels of drugs metabolized by CYP2C9.
In vitro research shows that devil's claw might inhibit CYP2C9, although this has not been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 3A4 (Cyp3A4) Substrates

Theoretically, devil's claw might increase levels of drugs metabolized by CYP3A4.
In vitro research shows that devil's claw might inhibit CYP3A4, although this has not been reported in humans.

Likelihood Possible Evidence D
Warfarin (Coumadin)

Theoretically, Devil's claw might increase the activity of warfarin.
In one case report, purpura occurred in a patient taking warfarin and devil's claw concurrently. This might indicate over-anticoagulation. It is unclear if this was due to Devil's claw or other contributing factors.

Likelihood Possible Evidence D
H2-Blockers

Theoretically, devil's claw might decrease the effectiveness of H2-blockers.
Devil's claw has been reported to increase stomach acid, which might interfere with the effects of H2-blockers.

Likelihood Possible Evidence D
P-Glycoprotein Substrates

Theoretically, devil's claw might increase levels of P-glycoprotein substrates.
In vitro research shows that devil's claw inhibits P-glycoprotein, which transports many drugs out of cells. This might increase intracellular levels of P-glycoprotein substrates, although it is unclear if this effect would be clinically important.

Likelihood Possible Evidence D
Proton Pump Inhibitors (Ppis)

Theoretically, devil's claw might decrease the effectiveness of PPIs.
Devil's claw has been reported to increase stomach acid, which might interfere with the effects of PPIs.

Likelihood Possible Evidence D
Devil's Claw full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Devil's Claw 510 mg, from the product label.

Vitamin World

See all Vitamin World products
Name
Vitamin World, Inc.
City
Ronkonoma
State
NY
ZipCode
11779
Pharmacist Counseling Corner

Devil's Claw 510 mg by Vitamin World: Common Questions

Does Devil's Claw 510 mg by Vitamin World interact with any medications?
Yes. Based on its ingredients, Devil's Claw 510 mg has a known interaction with 804 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Devil's Claw 510 mg 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.
What is devil's claw used for?
Devil's claw is possibly effective for back pain and osteoarthritis. It's a plant extract traditionally used to support joints and comfort, though the evidence we have is modest.
What are the most common side effects?
Most commonly, people report digestive upset—diarrhea, indigestion, or loss of taste—especially at higher doses. Allergic skin reactions have also been reported. The good news is it's generally well tolerated for short-term use in healthy adults.
Can I take this while pregnant?
No. Devil's claw is rated possibly unsafe in pregnancy because it may affect the uterus and its safety has not been established. Talk with your doctor or pharmacist before using it if you're pregnant or planning pregnancy.
Can I take this while breastfeeding?
No. There is not enough safety information for breastfeeding. If you're nursing, check with your doctor or pharmacist before starting this supplement.
Will this interact with my medications?
Devil's claw may affect warfarin (blood thinners) and several types of prescription drugs processed by your liver. It can also theoretically reduce the effect of acid-suppressing medications. Use the interaction checker on this page with your exact medications, then confirm the results with your doctor or pharmacist.

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

Not sure if Devil's Claw 510 mg is safe with your meds?

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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.

Devil's Claw 510 mg label
Go deeper

The Full Monographs Behind Devil's Claw 510 mg’s Ingredients

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

Herb & supplement monograph

Devil's Claw

Interacts with 804 drugs

Devil's claw is a southern African plant used mainly for arthritis and back pain, and some studies suggest it may help ease these types of discomfort. The evidence is moderate at best, and p...

Read the full Devil's Claw monograph →
Sources

Sources & How We Checked

Devil's Claw 510 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 18 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.

Devil's Claw 18 references
  1. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
  2. Shaw D, Leon C, Kolev S, Murray V. Traditional remedies and food supplements: a 5-year toxicological study (1991-1995). Drug Saf 1997;17:342-56.
  3. Chantre P, Cappelaere A, Leblan D, et al. Efficacy and tolerance or Harpagophytum procumbens versus diacerhein in treatment of osteoarthritis. Phytomedicine 2000;7:177-83.
  4. Chrubasik S, Thanner J, Kunzel O, et al. Comparison of outcome measures during treatment with the proprietary Harpagophytum extract doloteffin in patients with pain in the lower back, knee or hip. Phytomedicine 2002;9:181-94. PubMed
  5. Circosta C, Occhiuto F, Ragusa S, et al. A drug used in traditional medicine: Harpagophytum procumbens DC. II. Cardiovascular activity. J Ethnopharmacol 1984;11:259-74. PubMed
  6. Grahame R, Robinson BV. Devils's claw (Harpagophytum procumbens): pharmacological and clinical studies. Ann Rheum Dis 1981;40:632. PubMed
  7. Unger M, Frank A. Simultaneous determination of the inhibitory potency of herbal extracts on the activity of six major cytochrome P450 enzymes using liquid chromatography/mass spectrometry and automated online extraction. Rapid Commun Mass Spectrom 2004;1 PubMed
  8. Wegener T, Lupke NP. Treatment of patients with arthrosis of hip or knee with an aqueous extract of devil's claw (Harpagophytum procumbens DC). Phytother Res 2003;17:1165-72.
  9. Chrubasik S, Kunzel O, Thanner J, et al. A 1-year follow-up after a pilot study with Doloteffin for low back pain. Phytomedicine 2005;12:1-9. PubMed
  10. Romiti N, Tramonti G, Corti A, Chieli E. Effects of Devil's Claw (Harpagophytum procumbens) on the multidrug transporter ABCB1/P-glycoprotein. Phytomedicine 2009;16:1095-100. PubMed
  11. Chrubasik, S., Junck, H., Breitschwerdt, H., Conradt, C., and Zappe, H. Effectiveness of Harpagophytum extract WS 1531 in the treatment of exacerbation of low back pain: a randomized, placebo-controlled, double- blind study. Eur.J Anaesthesiol. 1999;16(2 DOI
  12. Laudahn, D. and Walper, A. Efficacy and tolerance of Harpagophytum extract LI 174 in patients with chronic non-radicular back pain. Phytother.Res. 2001;15(7):621-624.
  13. Belaiche P. Etude clinique de 630 cas d'artrose traites par le nebulisat aqueux d'Harpagophytum procumbens (Radix). Phytotherapy 1982;1:22-28.
  14. Chrubasik S, Model A, Black A, and et al. A randomized double-blind pilot study comparing Doloteffin® and Vioxx® in the treatment of low back pain. Rheumatology 2003;42:141-148.
  15. Cuspidi C, Sala C, Tadic M, et al. Systemic hypertension induced by Harpagophytum procumbens (devil's claw): a case report. J Clin Hypertens (Greenwich) 2015;17(11):908-10.
  16. Mahomed IM, Ojewole JAO. Oxytocin-like effect of Harpagophytum procumbens [Pedaliacae] secondary root aqueous extract on rat isolated uterus. Afr J Trad CAM 2006;3(1):82-89.
  17. Carvalho RR, Donadel CD, Cortez AF, Valviesse VR, Vianna PF, Correa BB. J Bras Nefrol. 2017 Mar;39(1):79-81.
  18. Anon. Devil's claw root: ulcers and gastrointestinal bleeding. Prescrire Int 2013;22(144):296.

See these in context on the Devil's Claw 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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