# Cat's Claw (Uncaria Tomentosa)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/cats-claw-uncaria-tomentosa
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-18
**Evidence Score:** 8 / 10
**Category:** Other
**Also Known As:** Uncaria tomentosa, Uña de gato, Samento, Paraguayo, Garabato amarillo, Life-giving vine of Peru, Hawk's claw

## Overview

Cat's claw (Uncaria tomentosa) is a woody vine containing pentacyclic oxindole alkaloids that modulate [immune function](/ingredients/condition/immune-support) and reduce inflammation. These compounds inhibit nuclear factor-kappa B (NF-κB) signaling, reducing [pro-inflammatory cytokine](/ingredients/condition/inflammation) production while enhancing T-helper cell activity.

## Health Benefits

- Supports immune system function by enhancing [white blood cell](/ingredients/condition/immune-support) activity, boosting the body's defense mechanisms. - Reduces inflammation and joint pain by inhibiting [pro-inflammatory cytokine](/ingredients/condition/inflammation)s, improving mobility and comfort. - May improve [digestive health](/ingredients/condition/gut-health) by promoting a healthy gut microbiome, enhancing digestion and nutrient absorption. - Enhances skin health by reducing inflammation and promoting [collagen synthesis](/ingredients/condition/skin-health), leading to healthier, more resilient skin. - Supports [cardiovascular health](/ingredients/condition/heart-health) by reducing blood pressure and improving circulation, lowering the risk of heart disease. - Boosts [cognitive function](/ingredients/condition/cognitive) by reducing neuroinflammation, supporting memory and mental clarity. - May improve respiratory health by reducing airway inflammation, easing symptoms of asthma and allergies.

## Mechanism of Action

Cat's claw's pentacyclic oxindole alkaloids, particularly isopteropodine and pteropodine, inhibit nuclear factor-kappa B (NF-κB) transcription, reducing TNF-alpha and interleukin-1 beta production. The alkaloids also enhance T-lymphocyte proliferation and increase interleukin-2 production. Quinovic acid glycosides provide additional [anti-inflammatory](/ingredients/condition/inflammation) effects by inhibiting 5-lipoxygenase activity.

## Clinical Summary

A 12-week randomized controlled trial of 40 rheumatoid arthritis patients showed cat's claw extract reduced joint pain by 40% compared to placebo. Small pilot studies (20-30 participants) demonstrated 30% increases in CD4+ [T-cell](/ingredients/condition/immune-support) counts in HIV patients after 8 weeks supplementation. However, most clinical evidence comes from small trials with 6-12 week durations, limiting conclusions about long-term efficacy and optimal dosing.

## Nutritional Profile

- Rich in alkaloids and flavonoids. - Contains tannins and sterols. - Provides polyphenolic compounds.

## Dosage & Preparation

Typical dosage is 250-350 mg of extract daily. Consult a healthcare provider before use.

## Safety & Drug Interactions

Cat's claw may cause mild gastrointestinal upset, dizziness, and headaches in some users. It can interact with immunosuppressive medications by enhancing [immune function](/ingredients/condition/immune-support), potentially reducing their effectiveness. The herb may also interact with [blood pressure](/ingredients/condition/heart-health) medications due to its hypotensive effects. Pregnant and breastfeeding women should avoid cat's claw due to insufficient safety data and potential uterine stimulant properties.

## Scientific Research

Preliminary studies and some clinical trials suggest its potential in supporting immune health and reducing [inflammation](/ingredients/condition/inflammation), but more research is needed.

## Historical & Cultural Context

Traditionally used by indigenous tribes in the Amazon for its medicinal properties, Cat's Claw has been revered for its immune-boosting effects.

## Synergistic Combinations

Echinacea, Astragalus, Turmeric

## Frequently Asked Questions

### How much cat's claw should I take daily?

Clinical studies typically use 20-60mg of standardized extract daily, or 300-500mg of dried bark powder taken in divided doses. Start with lower doses to assess tolerance, as optimal dosing varies by individual needs and health conditions.

### How long does cat's claw take to work?

Anti-inflammatory effects may be noticed within 2-4 weeks of consistent use, while immune system benefits typically develop over 6-8 weeks. Joint pain relief studies showed significant improvements after 8-12 weeks of supplementation.

### Can cat's claw help with arthritis pain?

Clinical studies show cat's claw can reduce arthritis pain by 40% and improve joint mobility within 12 weeks. The pentacyclic oxindole alkaloids inhibit inflammatory cytokines TNF-alpha and IL-1 beta that contribute to joint inflammation and cartilage breakdown.

### Does cat's claw interact with blood thinners?

Cat's claw may enhance the effects of anticoagulant medications like warfarin due to its anti-platelet properties. Consult your healthcare provider before combining cat's claw with blood thinners, as this may increase bleeding risk and require dosage adjustments.

### Is cat's claw safe for autoimmune conditions?

Cat's claw stimulates immune function, which may worsen autoimmune conditions like multiple sclerosis, lupus, or rheumatoid arthritis by increasing immune system activity. People with autoimmune disorders should consult their physician before using cat's claw supplements.

### What does clinical research show about cat's claw for immune support?

Multiple clinical studies demonstrate that cat's claw enhances white blood cell activity and increases the production of immune-supporting compounds like TNF-alpha and IL-10. Research published in peer-reviewed journals shows improvements in immune markers within 4-8 weeks of consistent supplementation. However, most studies use standardized extracts, and results vary depending on dosage, duration, and individual health status.

### Is cat's claw safe during pregnancy and breastfeeding?

Cat's claw is not recommended during pregnancy due to limited safety data and its potential effects on uterine contractions. Similarly, safety during breastfeeding has not been adequately studied, so it is best avoided during lactation as a precaution. Women planning pregnancy or currently pregnant should consult a healthcare provider before use.

### What is the difference between cat's claw extract and cat's claw powder?

Cat's claw extracts are concentrated forms with higher bioavailability and faster absorption compared to powder, making them more potent per serving. Standardized extracts typically contain 3-15% alkaloids and other active compounds, while powder may deliver variable alkaloid content. Extracts are often preferred for therapeutic purposes due to superior absorption, though powder offers a whole-plant approach at lower cost.

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*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
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