ByDr. Brennan Commerford, D.C.·Last reviewed: May 2026
All Ingredients
Botanical1 form

Cat's Claw (Unicaria tomentosa) Bark Extract

Preferred Form
Bark Extract
Absorption Score
66/100Very Good
Evidence Level
Moderate Evidence

See all Cat's Claw (Unicaria tomentosa) Bark Extract forms ranked

Scored by absorption, bioavailability & formulary tier

View scores

Quick Answer

What is the best form of Cat's Claw (Unicaria tomentosa) Bark Extract?

Bark Extract is our top-rated form of Cat's Claw (Unicaria tomentosa) Bark Extract — the form we recommend for its High Absorption bioavailability. We compared 1 forms in our formulary.

✓ Top Pick: Bark Extract

1forms compared

All Forms of Cat's Claw (Unicaria tomentosa) Bark Extract

FormTierAbsorption ScoreDose RangeUnit
Bark ExtractPreferred
66/100Very Good

Absorption by Form

Very Good
Bark Extract
66/100

What is Cat's Claw (Unicaria tomentosa) Bark Extract?

Cat's Claw (Unicaria tomentosa) Bark Extract is a Botanical supplement available in 1 form.

Not all forms of Cat's Claw (Unicaria tomentosa) Bark Extract are equal. The form you choose determines how much Cat's Claw (Unicaria tomentosa) Bark Extract actually reaches your tissues, and the difference between the best and worst forms can be substantial. This standardized Cat's Claw bark extract concentrates the pentacyclic oxindole alkaloids (POAs) responsible for its documented immune-modulating properties. Research suggests POA-standardized extracts support healthy NF-kB regulation, immune cell activity, and joint comfort more reliably than non-standardized bark preparations.

Forms of Cat's Claw (Unicaria tomentosa) Bark Extract Compared

Cat's Claw (Unicaria tomentosa) Bark Extract (3% Oxindole Alkaloids) Preferred (Preferred Form) has a bioavailability rating of good (S2). Typical dose range: not yet documented in our database.

What the Research Shows

Cat's Claw (Uncaria tomentosa) bark extract contains pentacyclic oxindole alkaloids (POAs) that modulate immune function and support healthy inflammatory pathways via NF-kB modulation. Clinical research supports its traditional Amazonian use for joint comfort and immune support, with standardized bark extracts providing consistent alkaloid profiles.

How to Choose the Right Form

Cat's Claw (Unicaria tomentosa) Bark Extract (3% Oxindole Alkaloids) is classified as Preferred Form by FormulaForge — our top recommendation for Cat's Claw (Unicaria tomentosa) Bark Extract. It carries a bioavailability rating of good (S2), meaning more of the active compound reaches your tissues per dose unit compared to lower-rated forms.

When choosing a Cat's Claw (Unicaria tomentosa) Bark Extract supplement, look for the S1 (best absorption) bioavailability tier on the label. Preferred Forms have the strongest research-backed evidence for efficient absorption.

Other forms may be appropriate depending on individual goals, cost considerations, and your healthcare provider’s guidance. The best form for you depends on your specific health needs.

Dosing & Safety

For Cat's Claw (Unicaria tomentosa) Bark Extract (3% Oxindole Alkaloids), the typical dosing range is not yet documented in our database. Individual dose requirements vary based on health goals, body weight, and existing nutrient intake.

Side Effects: Specific side effect data for these forms is not yet documented in our database. In general, consult your healthcare provider regarding tolerability at higher doses.

These statements are based on structure/function research and have not been evaluated by the FDA. This information is not intended to diagnose, treat, cure, or prevent any disease. Always consult a qualified healthcare provider before starting or changing a supplement regimen.

Dosing Guidance

Dosing information not yet available for this ingredient.

Frequently Asked Questions

What is the best form of Cat's Claw (Unicaria tomentosa) Bark Extract?
Our top-ranked form of Cat's Claw (Unicaria tomentosa) Bark Extract is Bark Extract. It has High Absorption bioavailability, meaning your body absorbs and uses it efficiently. When choosing Cat's Claw (Unicaria tomentosa) Bark Extract supplements, prioritize this form over generic alternatives.
How much Cat's Claw (Unicaria tomentosa) Bark Extract should I take?
Dosing for Cat's Claw (Unicaria tomentosa) Bark Extract varies based on the specific form, your health goals, and individual factors. Consult a qualified healthcare provider for personalized guidance.
What does Cat's Claw (Unicaria tomentosa) Bark Extract support?
Cat's Claw (Unicaria tomentosa) Bark Extract is commonly used to support Botanical. Research suggests it plays a role in several physiological pathways. As with all supplements, these statements have not been evaluated by the FDA and Cat's Claw (Unicaria tomentosa) Bark Extract is not intended to diagnose, treat, cure, or prevent any disease.
Is Cat's Claw (Unicaria tomentosa) Bark Extract safe?
Cat's Claw (Unicaria tomentosa) Bark Extract is generally well-tolerated when taken at research-supported doses. As with any supplement, individual responses vary. Consult a qualified healthcare provider before use, especially if you are pregnant, nursing, have a medical condition, or take medications. These statements have not been evaluated by the FDA.

Ready to formulate with Cat's Claw (Unicaria tomentosa) Bark Extract?

Our formulary recommends Bark Extract for optimal bioavailability. Build your personalized formula now.

Start My Formula

Compare & Learn More

FormulaForge formulates and sells supplements containing the ingredients discussed on this page. Our formulary recommendations are based on peer-reviewed bioavailability research. All cited studies are independently verifiable.