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Cat's Claw

Cat's Claw · Uncaria tomentosa

Herbs & Plants

Cat's Claw

Uncaria tomentosa

A climbing vine from the Amazon — cat's claw is named for the small curved thorns that look like a cat's claws.

Benefits

Supports joint comfort

its plant compounds help ease stiffness and soreness after movement

Supports normal immune defenses

its active compounds help the body maintain balanced daily immune activity

Supports digestive tract comfort

traditionally used to help soothe the lining of the stomach and gut

Helps protect cells from everyday damage

contains plant antioxidants that help protect cells from daily wear and tear

They will see the photograph and what it helps with.

Why they work

Oxindole alkaloids

active compounds in the inner bark that interact with immune cells and help support normal immune responses

Plant tannins and sterols

natural plant substances that help soothe irritated tissues and support comfortable joint movement

Polyphenols

plant compounds that protect tissues and cells against everyday oxidative stress

Balancing action

its compounds help guide the body's natural response to minor inflammation without shutting it down completely

How to use it for the specific effect

For joint comfort

take a standardized inner-bark extract with meals according to the product label

For a warm tea

simmer dried inner bark in hot water for 10 to 15 minutes, then strain before drinking

For digestive support

take a mild tea or capsule with food rather than on an empty stomach

For product selection

look for preparations made strictly from the inner bark of the vine

Key active compounds

Pentacyclic oxindole alkaloids

natural compounds found in cat's claw that may support normal immune activity and joint comfort

Tetracyclic oxindole alkaloids

related natural compounds found in some cat's claw preparations

Quinovic acid glycosides

natural plant compounds that help soothe irritated tissues

Proanthocyanidins and polyphenols

plant pigments and antioxidants that protect cells from damage

Caution

Immune-suppressing medication

cat's claw may affect immune activity and could interfere with medicines that deliberately lower the immune response

Pregnancy and breastfeeding

avoid cat's claw because it has a long history of use for preventing pregnancy and may affect the uterus

How we chose it to buy online

We check every product so you don't have to. A cat's claw only makes our list if:

  • Correct botanical species — clearly identified as Uncaria tomentosa rather than the related Uncaria guianensis
  • Inner bark sourcing — uses only the inner bark of the vine where active compounds are concentrated, not the whole wood or leaves
  • No hidden fillers — contains pure cat's claw bark or extract without undisclosed additives or proprietary blends
  • Sustainably harvested — sourced from suppliers that practice sustainable vine harvesting without destroying the root systems
  • Third-party tested — independently verified for plant identity, heavy metals, pesticides, and microbial purity

If no product meets these standards, we don't list one. No exceptions for affiliates.

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