Pack size: 100 capsules

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Cat’s Claw

Cat's claw extract

64,99 zł

Supports the body's natural immune defenses
Helps support everyday joint comfort
Complements a routine focused on inflammatory balance

Overview

A valued Amazonian botanical for an adult daily routine. Cat's claw, also known as vilcacora or uña de gato, is a vine traditionally used in South America and widely studied for its rich profile of plant compounds.

At the heart of the formula / Cat’s Claw

Thoughtful support. Clear purpose.

01Supports the body's natural immune defenses
02Helps support everyday joint comfort
03Complements a routine focused on inflammatory balance
04Provides a standardized profile of oxindole alkaloids
05Makes regular use of this Amazonian extract convenient

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Cat’s Claw

Made for your daily routine.

We use Uncaria tomentosa bark extract standardized to 5% oxindole alkaloids. The bark comes from Amazonian forests, is harvested during a specified season, and is gently dried at low temperatures.

Two capsules provide 1,000 mg of bark extract daily. The single-extract formula has a clearly specified alkaloid content, with a 50-day supply in each bottle.

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Cat’s Claw

What are cat's claw and oxindole alkaloids?

Cat's claw contains oxindole alkaloids, polyphenols, triterpenes, and glycosides. Oxindole alkaloids are a characteristic group used to standardize Uncaria tomentosa extracts. Research has explored immune responses, oxidative processes, inflammation, and joint symptoms, with evidence varying by preparation and study type.

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Cat’s Claw

What research informs Cat's Claw?

Research on Uncaria tomentosa examines several groups of plant compounds. Laboratory work explores oxindole alkaloids, polyphenols, oxidative processes, and inflammatory signaling. One human trial of an extract rich in pentacyclic alkaloids reported changes in tender joint counts. These findings concern specific preparations and do not establish the effects of this finished 5% oxindole alkaloid extract.

Ingredients / Doctor Life

Every ingredient. Clearly explained.

Each ingredient, its form and quantity — in one place.

Ingredient amounts for the servings shown in the table.
Ingredient	1 capsule	2 capsules
Cat's claw extract (Uncaria tomentosa)	500 mg	1000 mg

*NRV: Nutrient Reference Value

Full ingredient list

Cat's claw bark extract (Uncaria tomentosa), capsule shell (pullulan).

How to use

Part of your daily rhythm.

How to use

Take 1 capsule twice daily with a meal.

Important information

Do not exceed the recommended daily serving. Food supplements should not replace a varied diet. A balanced diet and a healthy lifestyle are recommended. Store at room temperature, at or below 25°C, out of reach of young children.

Science & sources

Understand the formula.

Cat's claw research primarily explores immune responses, inflammatory balance, antioxidant protection, and joint comfort. These selected publications examine oxindole alkaloids and other compounds in Uncaria tomentosa bark that contribute to its biological profile.

These publications concern the studied ingredients or formulas. They do not all evaluate the finished Doctor Life product, and research results do not guarantee individual outcomes.

01Uncaria tomentosa as a Promising Natural Source of Molecules with Multiple Activities: Review of Its Ethnomedicinal Uses, Phytochemistry and Pharmacology

Olinda Marques, Artur Figueirinha, Maria Eugénia Pina, Maria Teresa Batista

International Journal of Molecular Sciences (2025), 26(14), 6758. DOI: 10.3390/ijms26146758; PMID: 40725012.

This scientific review summarizes the phytochemical composition and activities of Uncaria tomentosa. The authors discuss oxindole alkaloids, polyphenols, triterpenes, and glycosides in relation to antioxidant activity, immune function, and inflammatory processes. The publication provides context for research on standardized bark extracts.

Read publication ↗

02Randomized double blind trial of an extract from the pentacyclic alkaloid-chemotype of Uncaria tomentosa for the treatment of rheumatoid arthritis

Erich Mur, Friedrich Hartig, Gerhard Eibl, Michael Schirmer

The Journal of Rheumatology (2002), 29(4), 678–681. PMID: 11950006.

A randomized, double-blind trial evaluated an Uncaria tomentosa extract rich in pentacyclic alkaloids in people with joint symptoms. The extract group showed a favorable change in the number of painful joints. The findings highlight the relevance of the alkaloid profile in research on joint-focused formulas.

03Anti-inflammatory and antioxidant activities of cat's claw (Uncaria tomentosa and Uncaria guianensis) are independent of their alkaloid content

Manuel Sandoval, Nataly N. Okuhama, X.-J. Zhang, Luis A. Condezo, J. Lao, F. M. Angeles, R. A. Musah, P. Bobrowski, M. J. S. Miller

Phytomedicine (2002), 9(4), 325–337. DOI: 10.1078/0944-7113-00117; PMID: 12120814.

A study compared the antioxidant and inflammation-related properties of two species known as cat's claw. Their extracts neutralized free radicals and affected selected mediators of cellular responses. The findings suggest that both alkaloids and other bark compounds contribute to the plant's biological activity.

Read publication ↗

FAQ / Cat’s Claw

Good questions. Clear answers.

Talk to us ↗

Are cat's claw, vilcacora, and uña de gato the same plant?

These names commonly refer to the Amazonian vine Uncaria tomentosa. “Cat's claw” refers to its curved, hooklike thorns. This product uses an extract of its bark.

What does standardization to 5% oxindole alkaloids mean?

It means this characteristic group of compounds makes up a specified proportion of the extract. Standardization helps define the serving's composition more precisely than the plant name or bark powder weight alone.

Why use cat's claw bark?

The bark has a history of traditional use and contains alkaloids, polyphenols, triterpenes, and other plant compounds. The selected material comes from Amazonian forests, is harvested at a specified time, and is processed using extraction and gentle low-temperature drying.

How do I take Cat's Claw?

Take one capsule twice daily with meals. Two capsules provide a total of 1,000 mg of bark extract.

How long does the bottle last?

Each bottle contains 100 capsules, a 50-day supply at two capsules daily.

Does the capsule contain gelatin?

No. The capsule uses plant-based pullulan instead of gelatin. It contains Uncaria tomentosa bark extract.

Can I take Cat's Claw with medication?

Speak with your doctor or pharmacist before use if you take medication, particularly medicines that affect the immune system, or if you use several supplements.

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