Quick Summary

Devil’s Claw (Harpagophytum procumbens) is a plant traditionally used for musculoskeletal complaints, particularly osteoarthritis and low back pain. Clinical evidence suggests it may help reduce pain and improve function in mild to moderate osteoarthritis and low back pain, with some studies indicating similar short-term efficacy to certain conventional treatments. Its anti-inflammatory and analgesic effects have been supported by several randomized controlled trials, although the overall quality of evidence ranges from low to moderate. Safety data indicate mostly mild gastrointestinal side effects; however, caution is advised due to rare reports of gastrointestinal bleeding and potential drug interactions.

What Is It

Devil’s Claw is a perennial plant native to southern Africa. The tuberous roots of this plant are used medicinally and contain active compounds thought to produce anti-inflammatory and pain-relieving effects. It is commonly available as capsules, tablets, or extracts for oral use.

Traditional Uses

  • Management of musculoskeletal pain, including osteoarthritis of the knee, hip, and spine
  • Relief of chronic low back pain
  • Anti-inflammatory treatment for various rheumatic conditions

Active Compounds

The primary bioactive constituents are iridoid glycosides, particularly harpagosides, which are believed to contribute to the plant’s anti-inflammatory and analgesic properties.

Potential Benefits with Evidence Levels

Osteoarthritis (knee, hip, spine)

  • May reduce pain and improve physical function
  • Evidence level: Moderate to low quality from randomized controlled trials
  • Notes: Some studies suggest comparable short-term efficacy to nonsteroidal anti-inflammatory drugs (NSAIDs) in mild cases, but long-term benefits remain unconfirmed.

Chronic Low Back Pain

  • May help reduce pain and improve mobility
  • Evidence level: Moderate to low quality
  • Notes: Benefits observed mainly in short-term trials; some equivalence to pharmacological treatments reported.

Inflammation and Musculoskeletal Diseases

  • May exhibit anti-inflammatory and analgesic effects
  • Evidence level: Supported by clinical and experimental studies, but further clinical validation is needed
  • Notes: Harpagosides and related phytochemicals likely contribute to these effects.

Side Effects

Devil’s Claw is generally considered safe when used appropriately, with mostly mild gastrointestinal side effects such as:

  • Gastrointestinal discomfort (~3% incidence)
  • Gastralgia (stomach pain)
  • Dyspepsia (indigestion)
  • Occasional nausea

Rarely, upper gastrointestinal bleeding has been reported in some cases.

Drug Interactions

  • Potential interactions with anticoagulants (e.g., warfarin); caution is advised
  • Herb-drug interactions are generally limited but precaution is warranted due to incomplete data

Who Should Avoid It

  • Individuals with known gastrointestinal ulcers or bleeding disorders
  • Patients at increased risk of bleeding
  • People with known hypersensitivity to Devil’s Claw or related plants
  • Pregnant or breastfeeding women, due to insufficient safety data

Evidence Limitations

  • Most clinical trials are of short duration and involve small sample sizes
  • Considerable heterogeneity in study designs, herbal preparations, and dosages
  • Limited data on long-term efficacy and safety
  • Some studies have methodological limitations and risk of bias
  • Inconclusive evidence regarding structural joint changes or disease-modifying effects
  • Incomplete reporting of adverse events in many studies

References

Last Reviewed

June 2024

Disclaimer: This page is for informational purposes only and is not intended to provide medical advice. Always consult a healthcare professional before starting any new herbal treatment, especially if you have existing health conditions or are taking other medications.