Cat's Claw Bark, Cut & Sifted (Uncaria tomentosa) | Wildcrafted Una de Gato, Bulk 1/2 lb to 5 lb

🌿 Wildcrafted Cat's Claw Bark, Cut & Sifted (Uncaria tomentosa)

Cat's Claw bark, known across South America as Una de Gato, is the cut and sifted bark of Uncaria tomentosa, a woody climbing vine of the Amazon. Our cut and sifted grade is sized for easy measuring, simmering, and blending, and it arrives in a resealable pouch that keeps the bark fresh after opening. Brewed as a decoction it pours a woody, gently bitter cup, with the tasting notes our team records as wormwood, witch hazel, and aspen. It is a longtime staple of the apothecary cabinet and a versatile base for teas, tinctures, and custom herbal blends.

🌱 Uncaria tomentosa is native to the Amazon basin and thrives in the warm, high-humidity tropical understory it evolved in. We source ours from that native range in Brazil, where it is traditionally wildcrafted by experienced harvesters who work the mature vines by hand. Gathering the bark where it grows wild lets it develop the depth and character that define a quality lot. Every lot we ship receives the same per-batch lab work and the same 100% money-back guarantee as everything we carry.

Radical transparency is part of how we operate. Every lot of our Cat's Claw bark is backed by its own Certificate of Analysis (COA) verifying purity, potency, and the absence of contaminants, and we publish each batch's results on our historical COA and grower's guide so you can confirm the exact lot you receive. You can review the full COA history and a deeper look at this botanical in our Cat's Claw Bark: The Amazon's Ancient Secret guide. It sits alongside the rest of our immune-support botanicals.

🍵 How herbalists reach for Cat's Claw bark

Specification	Detail
Botanical Name	Uncaria tomentosa
Common Name	Cat's Claw, Una de Gato
Format	Cut & Sifted (c/s) bark
Available Weights	1/2 lb, 1 lb, 5 lb bulk
Tasting Notes	Wormwood, Witch Hazel, Aspen
Grade	Premium, Wildcrafted
Testing Status	COA-verified, per lot
Country of Origin	Brazil

Safety & Considerations

Cat's Claw is an active botanical, so a little care makes for confident use:

Pregnancy and breastfeeding: traditionally avoided during pregnancy and while nursing.

Autoimmune conditions and immune-modulating medication: Cat's Claw is traditionally regarded as an immune-active herb. If you live with an autoimmune condition or take immunosuppressant medication (for example, after an organ transplant), consult a qualified practitioner before use.

Medications and surgery: it may interact with medications that affect blood pressure or blood clotting. We suggest pausing use before scheduled surgery and reviewing it with your practitioner if you take prescription medication.

General: keep out of reach of children. Shared for educational and traditional-use purposes.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Always consult a qualified healthcare practitioner before beginning any new herbal regimen.

Frequently Asked Questions

How do I brew Cat's Claw bark into a tea?

Because it is a dense bark, we brew it as a decoction rather than a quick steep. We simmer about one teaspoon of the cut and sifted bark per cup of water for 10 to 15 minutes, then strain. The cup comes out woody and gently bitter, with the wormwood, witch hazel, and aspen notes our team tastes in a good lot. If the bitterness is strong for you, a little honey or a splash of cinnamon rounds it out nicely.

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Is this cut and sifted bark or a powder?

This is the cut and sifted (c/s) bark, not a powder. We like this format because the larger pieces are easy to measure, simmer for a decoction, and strain cleanly, and they also extract well when you are making a tincture. It comes in a resealable pouch so the bark stays fresh between uses.

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Where does your Cat's Claw come from, and is it tested?

Uncaria tomentosa is native to the Amazon basin, and we source ours from that native range in Brazil, where it is traditionally wildcrafted by experienced harvesters. Every lot we ship is backed by its own Certificate of Analysis that verifies purity, potency, and the absence of contaminants, and we publish each batch on our historical COA and grower's guide so you can check the exact lot you receive. It is all covered by our 100% money-back guarantee.

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Can I take Cat's Claw if I am on medication or pregnant?

Cat's Claw is traditionally regarded as an immune-active herb, so we always point people to a qualified practitioner first. We suggest avoiding it during pregnancy and breastfeeding, and checking with your practitioner if you have an autoimmune condition, take immunosuppressant or blood-pressure medication, or have surgery coming up. This is traditional-use information and not medical advice, and we are always glad to point you to the lot's COA so you and your practitioner can see exactly what is in it.