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Cat's Claw / Uña de Gato
Uncaria tomentosa
Immune Modulatormoderate evidence
Oxindole alkaloids from Cat's Claw enhance NK cell and macrophage activity, inhibit tumour cell proliferation, and promote DNA repair. Studies show activity against colon, breast, and lung cancers. It also helps repair DNA damage caused by chemotherapy and radiation.
Medicinal Properties
ImmunomodulatoryAnti-tumourAnti-inflammatoryAntioxidantDNA repair
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Cancer Types Studied
ColonBreastLung
Recommended Dosage
300–600 mg standardised bark extract twice daily.
Preparations
Extract Capsules
300–600 mg standardised extract (TOA-free pentacyclic alkaloids) twice daily.
Tea
Simmer 1–2 tsp dried bark in 2 cups water for 15 min. Drink twice daily.
NIH / PubMed Research
Links open on PubMed (National Library of Medicine). Research is ongoing — results may not reflect clinical use.
Cautions & Interactions
- Avoid in autoimmune conditions
- May interact with immunosuppressants and blood thinners
- Avoid in pregnancy and breastfeeding
- Look for pentacyclic alkaloid (POA) products, not tetracyclic (TOA)
Related Herbs
Informational only. Not medical advice. Consult your healthcare provider before use.