Cat's Claw
Important Disclaimer
This is not medical advice. Consult a qualified healthcare provider before using any remedy, especially if pregnant, breastfeeding, on medication, or managing a health condition.
Overview
Cat's Claw is a woody vine native to the Amazon rainforest and other tropical areas of South and Central America. Named for its claw-shaped thorns, it has been used for centuries in traditional Peruvian medicine for immune support, inflammation, and digestive issues. While generally well-tolerated, it can interact with various medications and should be used with caution, particularly by those with autoimmune conditions or taking immunosuppressants.
Traditional Use
Indigenous peoples of the Peruvian Amazon, particularly the Asháninka tribe, have used cat's claw for over 2,000 years. Traditional uses include treating arthritis, digestive disorders, wounds, infections, and cancer. The plant was considered sacred and used in spiritual ceremonies. Shamans used it to treat deep-seated inflammation and to restore balance to the body. In the 1970s, Austrian researcher Klaus Keplinger brought cat's claw to international attention, leading to extensive research on its immune-modulating properties. Today it is widely used in South America and increasingly popular in North America and Europe for immune support and inflammatory conditions.
Key Active Compounds
Oxindole Alkaloids
Including pentacyclic oxindole alkaloids (POAs) that enhance immune function by increasing white blood cell activity. Different from tetracyclic oxindole alkaloids (TOAs) which may counteract immune benefits.
Quinovic Acid Glycosides
Compounds with anti-inflammatory and antiviral properties, contributing to the plant's traditional use for infections.
Polyphenols and Proanthocyanidins
Powerful antioxidants that help reduce oxidative stress and inflammation throughout the body.
Triterpenes
Including ursolic acid, which provides anti-inflammatory and potential anticancer effects.
Evidence-Based Benefits
Immune System Support
ModerateResearch shows cat's claw can enhance immune function by increasing white blood cell production and activity. May help the body fight infections and support overall immune health.
Anti-inflammatory Effects
ModerateStudies demonstrate significant anti-inflammatory activity, potentially beneficial for arthritis, inflammatory bowel disease, and other inflammatory conditions. Some research shows effects comparable to conventional anti-inflammatory drugs.
Digestive Health
Traditional use for digestive disorders including gastritis, ulcers, and inflammatory bowel conditions. May help heal intestinal lining and reduce inflammation.
Antioxidant Protection
High antioxidant content helps protect cells from oxidative damage and may support healthy aging and disease prevention.
Common Preparation Methods
Standardized Extract
Use commercial cat's claw extract standardized to 3% oxindole alkaloids and free of TOAs.
Dosage: 250-350mg up to 3 times dailyLook for products standardized to pentacyclic oxindole alkaloids (POAs) without tetracyclic oxindole alkaloids (TOAs). Take with food to minimize stomach upset.
Decoction
Simmer 1 tablespoon of dried inner bark in 1 liter of water for 45-60 minutes. Strain.
Dosage: 1 cup 2-3 times dailyTraditional preparation method. The long simmering time is necessary to extract the active compounds. Bitter taste can be improved with honey.
Tincture
Use 1:5 alcohol extract of inner bark.
Dosage: 1-2ml (20-40 drops) 2-3 times dailyConvenient form for regular use. Take with water between meals for best absorption.
Capsules
Use powdered inner bark in capsule form.
Dosage: 500-1000mg up to 3 times dailyEasy to dose. Look for organic, sustainably harvested products. Effects may take several weeks to become apparent.
Safety & Cautions
Please read carefully before use
Contraindications
- Autoimmune diseases (lupus, multiple sclerosis, rheumatoid arthritis) - may overstimulate immune system
- Organ transplant recipients - may interfere with immunosuppressant medications
- Pregnancy and breastfeeding - may affect hormones and immune system
- Scheduled surgery - discontinue 2 weeks before due to immune effects
- Bleeding disorders or taking anticoagulants
Drug Interactions
- Immunosuppressant medications - may reduce their effectiveness
- Blood pressure medications - may enhance hypotensive effects
- Anticoagulants and antiplatelet drugs - may increase bleeding risk
- Medications metabolized by CYP3A4 enzyme - cat's claw may affect drug levels
- Hormone therapies - may have estrogenic effects
Possible Side Effects
- Digestive upset, nausea, diarrhea (usually mild and temporary)
- Dizziness or headache in some individuals
- Allergic reactions in sensitive people
- May lower blood pressure
- Rare reports of kidney problems with very high doses
Special Populations
- USE WITH CAUTION - Consult healthcare provider before use, especially with existing conditions
- Not recommended for children due to limited safety data
- People with autoimmune conditions should avoid or use only under medical supervision
- May take 4-8 weeks of consistent use to see benefits
- Choose sustainably harvested products to protect rainforest ecosystems
- Ensure products are free of tetracyclic oxindole alkaloids (TOAs)
Sources & References
Journal of Ethnopharmacology
Memorial Sloan Kettering Cancer Center
Quick Reference
Rubiaceae
Inner bark, Root
Bitter, woody, slightly astringent
Safety First
Always consult with a qualified healthcare provider before starting any new remedy, especially if you have existing health conditions or take medications.