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About Cat's Claw
Plant: Uncaria tomentosa (Vilcacora)
A cornerstone Buhner-protocol herb that modulates immune response and helps maintain CD57+ T-cell counts, a marker Borrelia specifically suppresses in chronic infection. Also reduces joint and muscle inflammation.
Reference dosing
| Tincture dose — 1:5 | 1.25–5ml, 3 times daily |
| Tincture dose — 1:3 | 0.75–3ml, 3 times daily |
| Capsule dose (mg) | 250–1,000mg of dried herb, 3 times daily Calculated from Buhner's tincture dose (1ml of a 1:5 tincture = 200mg of dried herb). |
Avoid with blood-thinning/immunosuppressive medication or low blood pressure; deactivated by stomach acid blockers.
Capsule whole-herb extracts vary by manufacturer (a concentrated extract needs less than a plain powder). Treat these figures as a guide only and follow the product label.
These are figures from the sources used on this site. They are not a prescription. Follow the product label and your prescriber.
Safety and cautions
Contraindications: Avoid with blood-thinning or immunosuppressive medication, and discontinue 10 days before surgery. Use caution with existing low blood pressure. Deactivated by stomach acid blockers/antacids — substitute Ashwagandha or Cordyceps if these are needed.
Herbs can interact with prescription medicines and other supplements. Check with your prescriber or pharmacist first, and do not use herbs in pregnancy or while breastfeeding unless a doctor agrees.
Information last checked: 6 November 2026.
Symptoms linked to this herb
Traditional uses from our symptom map. Not medical advice.
Where to buy
Supplement Hub (EU)Cat’s Claw Supreme — 90 capsules · €32.69 · CapsulesSupplement Hub (US)Cat’s Claw Supreme — 90 capsules · See product page (USD) · CapsulesTurmeric & Honey (UK)Cat’s Claw Supreme — 90 capsules · £36.99 · CapsulesFemologist (US)Cat’s Claw Liquid Herbal Tincture — 2 fl oz · See product page · Tincture (ratio not stated)Napiers (UK)Cat’s Claw Bark Glycerite (Uncaria tomentosa) — Napiers · See product page · Glycerite (alcohol-free)Lymeherbs.pl (EU)Koci pazur / Vilcacora kora mielona (100g) · See product page (PLN) · Ground bark (powder)Supplement Hub (UK)Cat’s Claw Supreme — 90 capsules · £36.99 · CapsulesMontana Farmacy (US)Cats Claw Herbal Extract Tincture — Montana Farmacy · See product page · 1:5Nutramedix US (US)Samento (Cat’s Claw) 2oz — Nutramedix · See product page · Not confirmed — check product pageNutramedix UK (UK)Samento (Cat’s Claw) — Nutramedix · £39.95 · Not confirmed — check product pageNapiers (UK)Cat’s Claw Bark Tincture (Uncaria tomentosa) · £10.49 · 1:3, 60%Check the label and the seller. A link is not a recommendation.
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Educational only, not medical advice. See the disclaimer.