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Ingredients/Herb/Devil's Claw

Devil's claw.

May offer mild relief for joint discomfort. A traditional herb thought to reduce mild joint pain and stiffness. It contains compounds that may have some anti-inflammatory properties.

StudiedResearch depth500 to 750mgDaily amount

Reviewed March 2026

Herb
Devil's ClawIngredientMD
Category
Herb
Also filed under
Joint healthPain relief

What Devil's Claw is, and what it does.

Does it work
Maybe. The evidence is mixed. Some human trials show a benefit for joint discomfort, others don't. It's not a replacement for proven treatments.
How much to take
Look for a standardized extract providing 50-100mg of harpagoside daily. This usually means taking 500-1000mg of the total extract, split into two doses.
Time to feel it
The bitterness is immediate. Joint comfort measures in trials move over four to eight weeks of daily use, so the useful read is at the end of that stretch.
The first dose
Nothing. This needs to build up in your system. Don't expect any relief for at least a couple of weeks.
With regular use
After a month or two, some people notice a modest improvement in mobility and less day-to-day joint achiness. If you feel nothing after 6 weeks, it's probably not for you.
How well tolerated
Generally well tolerated, but has a few specific warnings. Can cause stomach upset. Avoid if you have ulcers, gallstones, or take blood thinners.
How it feels
A gradual, mild easing of joint discomfort. Not a 'wow' effect. More of a background helper than a potent pain reliever.
The overlooked benefit
The bitter iridoids that mark this extract also carry its older use as a digestive bitter, raising gastric secretion, which is why it is conventionally taken with food.

500 to 750mg a day is where Devil's Claw works.

How much to take a dayMedium confidence
500 to 750mg
Daily maintenanceThe everyday amount, and where most daily supplements sit. This is the one you take month after month.
4,800mgClinical territory. Trials run high on purpose, for a set number of weeks, against one measured outcome. Impressive to hit, and not what a daily product is for.
Above 4,800mgPast what the research covers. More capsules rather than more effect.
MORE EFFECT ↑02,400mg4,800mg plateauDAILY DOSE →
The shaded band is where the dosing trials landed.

Source: Gagnier et al. 2004 Cochrane Review. Brien et al. 2006 BMC Complement Altern Med.

The proof, claim by claim.

What these words mean

These words describe the research, not the molecule's worth. Research strength is how much work stands behind one claim, and it is never a product score.

Studied.

While some studies suggest benefits for joint health, the overall evidence base is moderate. More research is needed to confirm these effects and determine optimal dosages.

  • Joint comfort and mobilityRandomised trial
  • Everyday lower back comfortRandomised trial
4 more claims
  • Physical function scores in comfort trialsRandomised trial
  • Healthy inflammatory responseIn vitro study
  • Digestive bitter and appetite stimulationNarrative review
  • Antioxidant activity of harpagosideIn vitro study

Questions people ask about Devil's Claw.

Is this better than ibuprofen?
No. It's much milder and slower. Ibuprofen is for acute pain. This is for chronic, low-grade discomfort.
5 more questions
How long until I know if it's working?
Give it at least 4-6 weeks of consistent use. If you feel zero difference by then, it's likely not going to work for you.
Can I take it with glucosamine?
Yes, they don't interact. Many joint supplements combine them, though the evidence for that combo isn't strong.
Why is it called Devil's Claw?
The plant's fruit has large, claw-like hooks. Looks pretty menacing.
Does it work for back pain?
Some of the research suggests it might help with low back pain, but the evidence is a bit stronger for hip and knee discomfort.
What are the side effects?
Stomach upset or diarrhea are the most common ones. Taking it with food usually helps.
Pairs well with24 on file
Devil's Claw + Boswellia (Indian Frankincense)Complementary anti-inflammatory pathways
Devil's Claw + Turmeric (Curcumin)Overlapping inflammatory-signaling support
Devil's Claw + Ginger Root (Zingiber officinale)Additive effect on platelet function (caution)
Devil's Claw + White Willow BarkShared prostaglandin pathway, additive load (caution)
Devil's Claw + MSM (Methylsulfonylmethane)long-standing formulation practice
Devil's Claw + Glucosamine Sulfatecomplementary mechanisms
Why these belong in the same formula, 24 pairings

Why these belong in the same formula. Each row says what the basis is, from settled biochemistry through to a trial that measured the pair.

Devil's Claw + Boswellia (Indian Frankincense)Complementary anti-inflammatory pathways

Devil's claw harpagosides act mainly on cyclooxygenase-driven prostaglandin signaling while boswellic acids work largely on the 5-lipoxygenase arm, so the two reach different branches of the body's normal inflammatory response. That complementary coverage is why they are a long-standing pairing in joint-comfort formulas.

Devil's Claw + Turmeric (Curcumin)Overlapping inflammatory-signaling support

Curcumin and devil's claw both quiet NF-kB and cytokine signaling that governs the body's normal inflammatory tone, reaching the same process through partly different molecular steps. Formulators combine them so the effect on joint and connective-tissue comfort is broadened rather than duplicated.

Devil's Claw + Ginger Root (Zingiber officinale)Additive effect on platelet function (caution)

Ginger gingerols and devil's claw both act on the eicosanoid pathways that also regulate normal platelet aggregation, so stacking them can add up more than either alone. Worth spacing or moderating when combined, especially alongside anything else that affects normal clotting.

Devil's Claw + White Willow BarkShared prostaglandin pathway, additive load (caution)

White willow salicin converts to salicylate that acts on the same prostaglandin-forming COX enzymes devil's claw works on, so the two press on one pathway together. That overlap can compound effects on the stomach lining and on normal clotting, so combine them cautiously.

Devil's Claw + MSM (Methylsulfonylmethane)long-standing formulation practice

Harpagosides act on eicosanoid signalling while MSM contributes sulfur to matrix sulfation and glutathione turnover. The two sit on different mechanisms in the same joint comfort stack.

Devil's Claw + Glucosamine Sulfatecomplementary mechanisms

Devil's claw works on signalling that governs joint comfort, whereas glucosamine supplies amino sugar substrate for cartilage matrix. Signalling and substrate are additive, not redundant.

Devil's Claw + Chondroitin Sulfatecomplementary mechanisms

Chondroitin holds water in the cartilage matrix and moderates degradative enzyme activity, a structural lever distinct from the iridoid glycosides in devil's claw. Joint blends routinely carry both.

Devil's Claw + Bromelainlong-standing formulation practice

Bromelain is a proteolytic enzyme that acts on fibrin and kinin handling, a separate route into normal tissue comfort. It has been paired with devil's claw in joint formulas for decades.

Devil's Claw + Boswellia (AKBA)parallel eicosanoid pathways

AKBA acts mainly on the 5-lipoxygenase branch of eicosanoid production, while harpagoside is described on the cyclooxygenase and cytokine side. Covering both branches is the reason the pair is a formulation staple.

Devil's Claw + Cat's Clawlong-standing formulation practice

Cat's claw alkaloids act on NF-kB driven cytokine signalling, upstream of the eicosanoid steps devil's claw is associated with. The two are combined to hit sequential points in the same cascade.

Devil's Claw + Collagen Peptidescomplementary mechanisms

Collagen peptides raise circulating glycine, proline and hydroxyproline for matrix rebuilding, which devil's claw does not supply at all. Comfort signalling plus matrix substrate is the usual pairing logic.

Piperine slows intestinal and hepatic phase-II conjugation and P-glycoprotein efflux, which raises systemic exposure to co-taken plant constituents. Harpagoside is a glycoside subject to that same first-pass handling.

Devil's Claw + Fish Oiladditive effect on normal clotting

Long-chain omega-3s shift thromboxane production and lengthen normal platelet aggregation, and devil's claw has reported antiplatelet activity of its own. The two together push normal clotting further than either alone.

Devil's Claw + Betaine HCLadditive gastric acid load

Devil's claw is a bitter that stimulates gastric secretion, and betaine HCl adds free acid directly. Stacked at full doses they can make the stomach noticeably more acidic than intended, so they are usually staggered.

Devil's Claw + Vitamin CEstablished cofactor biochemistry for connective tissue

Prolyl and lysyl hydroxylase require ascorbate to hydroxylate collagen chains, which is what lets the triple helix hold together. Devil's claw is used in joint comfort blends that also carry collagen or connective-tissue ingredients, and those depend on that hydroxylation step. The vitamin does not change devil's claw pharmacology. It supports the tissue side of the same formula.

Devil's Claw + Sodium BicarbonateEstablished gastric pharmacology

Devil's claw root is a classic bitter, and its traditional digestive use runs through bitter receptors and a reflex rise in gastric secretion. Alkalising agents raise gastric pH and blunt exactly that response. Taking an antacid alongside works against the bitter action, though it does not affect the harpagoside absorbed for joint use.

Devil's Claw + Activated CharcoalEstablished adsorption pharmacology

Charcoal adsorbs small organic molecules non-selectively in the gut, and iridoid glycosides such as harpagoside are within that range. Co-timed dosing lowers how much reaches the circulation. Spacing the two by a few hours is the standard handling.

Devil's Claw + PycnogenolOverlapping marker-level activity in joint comfort blends

Pine bark procyanidins are studied against inflammatory and oxidative markers relevant to joint comfort during activity. Devil's claw harpagosides are studied against the same marker family. The pairing is common in formulation and has not been isolated in a combination trial, so it rests on mechanism.

Devil's Claw + Grape Seed ExtractPolyphenol co-formulation

Grape seed procyanidins and devil's claw phenylethanoids both cycle through oxidised and reduced states and can regenerate one another in solution. That chemistry is well described in vitro. Whether it changes a measurable outcome after ingestion has not been shown.

Devil's Claw + AstaxanthinDifferent compartments of the same antioxidant defence

Astaxanthin sits in the lipid phase of membranes, while devil's claw constituents are water-soluble glycosides. Antioxidant networks depend on both phases being covered, which is the argument for combining them. Read this as mechanistic rather than clinical.

Devil's Claw + Hyaluronic AcidStructural component alongside a comfort-directed botanical

Hyaluronic acid is a normal constituent of synovial fluid and contributes to its viscosity. Devil's claw is used for joint comfort and mobility during activity through a different, signalling-level route. A blend covers structure and comfort separately rather than reinforcing one mechanism.

Devil's Claw + MagnesiumEstablished muscle physiology alongside a joint-directed botanical

Magnesium is required for normal muscle relaxation and neuromuscular signalling, which is adjacent to but distinct from joint comfort. Blends aimed at movement often carry both for that reason. No trial has measured them together.

Devil's Claw + Digestive EnzymesTraditional bitter use plus enzymatic digestion

Devil's claw is listed in European monographs for loss of appetite and mild digestive discomfort on the strength of its bitter iridoids. Supplemental proteases and lipases act downstream on the meal itself. The two sit at different stages of the same meal, which is why bitters and enzymes are conventionally packed together.

Devil's Claw + Ginkgo BilobaAdditive platelet caution rather than a benefit

Ginkgolides antagonise platelet-activating factor, a well-described action. Devil's claw has been reported in case-level literature to be co-implicated in bleeding events, though the mechanism is not established. Where both appear in one regimen, the additive direction is worth flagging rather than assumed absent.

Who should be cautious

Talk to a doctor before taking Devil's Claw if any of these apply to you: Pregnancy, Breastfeeding, Gallstones, Stomach ulcers, Blood thinners. These are flags to check first, not effects Devil's Claw is known to cause.

Not medical advice. Show the label to your pharmacist.

What Devil's Claw actually does.

Established

Devil's claw comes from the secondary storage root of a specific plant, and products are standardized using a compound called harpagoside.

3 more mechanisms
Established

The compounds in this root taste intensely bitter, and that bitterness is why it's traditionally used to nudge gastric secretion through a taste reflex.

Established

Only the secondary tuber of the plant, not the main root, contains harpagoside, so using the right plant part is a real requirement, not just a fine point.

Strong

Gut bacteria break down harpagoside before much of it is absorbed, so what actually circulates in your body is a modified form, not the exact compound listed on the label.

Grown, 6 steps on record

Where Devil's Claw comes from.

The part used is the small storage tubers that hang off the main root of a southern African desert plant. They are dug up by hand, sliced, sun-dried, then either ground or soaked in water or alcohol to make a concentrated extract, which is tested for a marker compound called harpagoside.

What this route gives you

Made from a plant. What ends up in the capsule tracks the harvest, so batch testing and a stated marker matter more here than with a made molecule.

6 steps on record
Starts as
Wild-harvested Harpagophytum in the Kalahari

The plant grows in the sandy soils of Namibia, Botswana and South Africa. Nearly all commercial supply is still wild-collected rather than cultivated, and harvesting is regulated under national permits and CITES Appendix II trade monitoring.

Extracted by
Secondary tuber collection

Collectors dig laterally to reach the secondary storage tubers and leave the primary root in place so the plant regrows. The primary root does not carry the marker constituents.

Converted by
Slicing and drying

Tubers are sliced thin and sun-dried within a day or so of lifting, since the fresh tissue is water-rich and spoils quickly. Drying speed affects the surviving harpagoside.

Extracted by
Water or hydroethanolic extraction

Milled root is extracted with hot water or an ethanol and water mixture. Extraction pH and temperature are controlled because the iridoid glycoside degrades under acid.

Purified by
Filtration and concentration

The extract is filtered, concentrated under reduced pressure and dried, typically onto a carrier for free-flowing powder.

Standardised to
Harpagoside assay

Lots are assayed by HPLC against harpagoside and blended to the declared percentage, most often 1.5 to 3 percent for extracts.

The forms it comes in.

Devil's claw secondary root, milledThe whole dried tuber ground to powder, carrying iridoids, sugars, phytosterols and fibre at the levels the plant grew them.Fits Traditional preparations and teas, and products that want the entire root matrix rather than a marker fraction.Trade-off Harpagoside content varies with harvest and provenance, so the dose per capsule is not fixed unless the lot is assayed.
3 more forms
Water extract standardised to harpagosideHot-water extraction concentrates the polar iridoid glycosides. Typical native ratios sit in the 1.5:1 to 3:1 range and are declared on the certificate.Fits Products that specify a harpagoside milligram figure, which is how most of the clinical literature dosed it.Trade-off Water leaves the less polar constituents behind, so it is a fraction of the root rather than a concentrate of all of it.
Alcohol and water extract of devil's claw rootEthanol carries over both the iridoids and the less polar phytosterols and phenylethanoids, giving a broader profile per gram.Fits Tinctures and liquid formats where a full-spectrum profile and rapid dispersion are wanted.Trade-off Alcohol content matters for some users, and the broader profile makes marker-to-marker comparison with aqueous extracts imprecise.
Enteric-coated devil's claw extractThe same extract inside a coating that stays intact at gastric pH and dissolves in the small intestine, sparing the acid-labile glycoside.Fits Users who find the bitter root uncomfortable on an empty stomach, and formulations aiming to deliver harpagoside past the stomach intact.Trade-off The coating suppresses the bitter reflex that the traditional digestive use depends on, so it is the wrong choice for that purpose.
What the strongest studies found

The essence, in one line each.

  1. In a meta-analysis of trials in adults with diagnosed non-specific low-back pain, two high-quality studies found that daily doses of devil's claw with 50 or 100 mg of harpagoside improved short-term pain and reduced rescue medication use more than placebo, while another trial found it worked about as well as 12.5 mg of rofecoxib.Meta-analysis, in adults (over 18 years of age) suffering from acute, sub-acute or chronic non-specific low-back pain. Gagnier et al., 2006 (Cochrane Database of Systematic Reviews). PMID 16625605 ↗
4 more findings
  1. In a four-month study of 122 adults with a diagnosed joint condition, six daily capsules of 435 mg Harpagophytum powder were as effective as 100 mg of diacerhein for improving pain and function, and led to significantly less use of other pain-relief drugs.Randomised trial, in patients suffering from osteoarthritis of the knee and hip. Chantre et al., 2000 (Phytomedicine). PMID 11185727 ↗
  2. In an open 12-week study in 75 adults with a diagnosed joint condition of the hip or knee, an aqueous Devil's claw extract (50 mg harpagoside daily) lowered the total WOMAC joint index by 22.9%, with improvements across the pain, stiffness, and physical-function subscales.Cohort study, in patients with arthrosis of hip or knee. Wegener and Lupke, 2003 (Phytotherapy Research). PMID 14669250 ↗
  3. In a 4-week trial in middle-aged male recreational runners with self-reported knee discomfort, a supplement combining devil's claw with ginger and Bixa orellana led to a significant decrease in leg fat mass and a greater reduction in knee temperature compared to placebo.Randomised trial. González-Gross et al., 2021 (International Journal of Environmental Research and Public Health). PMID 34067240 ↗
  4. In a single-arm study of 186 adults with a diagnosed joint condition, taking a supplement containing devil's claw and four other ingredients was associated with improved joint comfort and mobility over 6 months, though without a control group the change cannot be separated from time and expectation.Cohort study, in patients with knee and/or hip OA. Puigdellívol Grifell et al., 2024 (Journal of Dietary Supplements). PMID 38180010 ↗

Chosen from the 254 we read for Devil's Claw.

Primary evidence

The studies, linked.

5 sources behind our Devil's Claw verdict, every one linked to PubMed, the journal or ClinicalTrials.gov.

  1. ClinicalTrials.gov ↗
4 more linked trials

From clinical trials and PubMed, ranked by study type and citation weight, not cherry-picked.

Side effects reported to the FDA

Problems people have reported.

Read this carefully. These are 48 voluntary, unverified reactions reported to the FDA (openFDA). The number mostly reflects how popular Devil's Claw is, not how risky it is. A report is not proof Devil's Claw caused anything. It is a signal of what to watch for, nothing more.

Palpitations
3
Anxiety
2
Arthralgia
2
3 more reported effects
Drug Interaction
2
Fatigue
2
Myalgia
2

Source: openFDA adverse-event reports. Voluntary reporting, not an incidence rate.

FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This information is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before starting any supplement regimen.