Last update
3/20/2026
Reviewed By
Reviewed By
Overview
SCIENTIFIC SCORE
Possibly Effective
Based on 2 Researches
7
USERS' SCORE
Good
Based on 45 Reviews
8.4
Supplement Facts
Serving Size: 2 Veg Capsules
Amount Per Serving
%DV
Total Carbohydrate
<1 g
<1%*
Cat's Claw(Uncaria tomentosa) (Bark)
1 g (1,000 mg)
†
Top Medical Research Studies
7
We explored the effectiveness of cat's claw in managing autoimmune disorders, specifically osteoarthritis (OA) and rheumatoid arthritis (RA). Our review included various studies, focusing on its potential as a dietary supplement to reduce inflammation and oxidative stress associated with these conditions.
From the research, we found three studies that support the use of cat's claw, whether alone or in combination with other treatments, for patients suffering from OA. However, while some evidence exists, we noted that the effectiveness of cat's claw for RA isn't as robust.
It's important to recognize, though, that the full impact of cat's claw on autoimmune disorders needs more thorough research. Many factors, including varying responses to treatment, call for caution in making solid recommendations based solely on the existing studies.
Overall, while there’s promise in using cat's claw for managing autoimmune conditions, we should approach it with realistic expectations and an understanding that further investigation is necessary before solid conclusions can be drawn.
From the research, we found three studies that support the use of cat's claw, whether alone or in combination with other treatments, for patients suffering from OA. However, while some evidence exists, we noted that the effectiveness of cat's claw for RA isn't as robust.
It's important to recognize, though, that the full impact of cat's claw on autoimmune disorders needs more thorough research. Many factors, including varying responses to treatment, call for caution in making solid recommendations based solely on the existing studies.
Overall, while there’s promise in using cat's claw for managing autoimmune conditions, we should approach it with realistic expectations and an understanding that further investigation is necessary before solid conclusions can be drawn.
Read More
7
We engaged in an interesting exploration of how a plant extract from cat's claw, specifically the pentacyclic chemotype of Uncaria tomentosa, might help those suffering from rheumatoid arthritis (RA). Our study involved forty patients who were already on medications like sulfasalazine or hydroxychloroquine, which allowed us to evaluate the extract's effectiveness in addition to these existing treatments.
Over the course of 52 weeks, we structured the study into two phases. The first 24 weeks were double-blind and placebo-controlled, meaning neither the patients nor the researchers knew who was receiving the actual cat's claw extract and who was getting a placebo. This approach adds credibility to the findings. After the initial phase, all patients received the plant extract for another 28 weeks.
Notably, we found that after 24 weeks of treatment with the cat's claw extract, patients experienced a significantly larger reduction in painful joints compared to those taking the placebo. The results highlighted a 53.2% decrease in painful joints with the extract versus 24.1% with the placebo, a finding we felt was particularly promising. Even in the second phase, where patients received the extract after an initial placebo, there were marked improvements in tender and swollen joints.
Importantly, throughout the study, we observed only minor side effects, suggesting that cat's claw is relatively safe for this patient population. Our findings indicate that this plant extract could be a modest but helpful addition for patients dealing with active rheumatoid arthritis, particularly for those who are already on other treatments.
Over the course of 52 weeks, we structured the study into two phases. The first 24 weeks were double-blind and placebo-controlled, meaning neither the patients nor the researchers knew who was receiving the actual cat's claw extract and who was getting a placebo. This approach adds credibility to the findings. After the initial phase, all patients received the plant extract for another 28 weeks.
Notably, we found that after 24 weeks of treatment with the cat's claw extract, patients experienced a significantly larger reduction in painful joints compared to those taking the placebo. The results highlighted a 53.2% decrease in painful joints with the extract versus 24.1% with the placebo, a finding we felt was particularly promising. Even in the second phase, where patients received the extract after an initial placebo, there were marked improvements in tender and swollen joints.
Importantly, throughout the study, we observed only minor side effects, suggesting that cat's claw is relatively safe for this patient population. Our findings indicate that this plant extract could be a modest but helpful addition for patients dealing with active rheumatoid arthritis, particularly for those who are already on other treatments.
Read More
Most Useful Reviews
9
Negative analysis
594 people found this helpful
The doctor prescribed treatment for herpes and chlamydia, but there was no effect from one tablet twice daily. Eventually, I tried the can of cat's claw. After taking it, my analysis results came back all negative. I’m confident that cat's claw helped, and I've ordered more.
Read More
9
Effective dietary supplement
41 people found this helpful
I purchased this to strengthen my immune system based on many positive reviews. I first tried it six or seven years ago, and it's now my top dietary supplement. I've faced severe illnesses, and I’m glad to share how it has effectively supported my health.
Read More
9
Improved health indicators
6 people found this helpful
I ordered this product based on reviews about its effectiveness against viruses, particularly HPV. After using it, my follow-up analysis showed much better indicators. I hope to eradicate HPV soon. I also took Omega and vitamins D and C alongside this. If you find this useful, please give a thumbs up. Wishing everyone good health!
Read More
Medical Researches
SCIENTIFIC SCORE
Possibly Effective
Based on 2 Researches
7
- All Researches
7
We explored the effectiveness of cat's claw in managing autoimmune disorders, specifically osteoarthritis (OA) and rheumatoid arthritis (RA). Our review included various studies, focusing on its potential as a dietary supplement to reduce inflammation and oxidative stress associated with these conditions.
From the research, we found three studies that support the use of cat's claw, whether alone or in combination with other treatments, for patients suffering from OA. However, while some evidence exists, we noted that the effectiveness of cat's claw for RA isn't as robust.
It's important to recognize, though, that the full impact of cat's claw on autoimmune disorders needs more thorough research. Many factors, including varying responses to treatment, call for caution in making solid recommendations based solely on the existing studies.
Overall, while there’s promise in using cat's claw for managing autoimmune conditions, we should approach it with realistic expectations and an understanding that further investigation is necessary before solid conclusions can be drawn.
From the research, we found three studies that support the use of cat's claw, whether alone or in combination with other treatments, for patients suffering from OA. However, while some evidence exists, we noted that the effectiveness of cat's claw for RA isn't as robust.
It's important to recognize, though, that the full impact of cat's claw on autoimmune disorders needs more thorough research. Many factors, including varying responses to treatment, call for caution in making solid recommendations based solely on the existing studies.
Overall, while there’s promise in using cat's claw for managing autoimmune conditions, we should approach it with realistic expectations and an understanding that further investigation is necessary before solid conclusions can be drawn.
Read More
7
We engaged in an interesting exploration of how a plant extract from cat's claw, specifically the pentacyclic chemotype of Uncaria tomentosa, might help those suffering from rheumatoid arthritis (RA). Our study involved forty patients who were already on medications like sulfasalazine or hydroxychloroquine, which allowed us to evaluate the extract's effectiveness in addition to these existing treatments.
Over the course of 52 weeks, we structured the study into two phases. The first 24 weeks were double-blind and placebo-controlled, meaning neither the patients nor the researchers knew who was receiving the actual cat's claw extract and who was getting a placebo. This approach adds credibility to the findings. After the initial phase, all patients received the plant extract for another 28 weeks.
Notably, we found that after 24 weeks of treatment with the cat's claw extract, patients experienced a significantly larger reduction in painful joints compared to those taking the placebo. The results highlighted a 53.2% decrease in painful joints with the extract versus 24.1% with the placebo, a finding we felt was particularly promising. Even in the second phase, where patients received the extract after an initial placebo, there were marked improvements in tender and swollen joints.
Importantly, throughout the study, we observed only minor side effects, suggesting that cat's claw is relatively safe for this patient population. Our findings indicate that this plant extract could be a modest but helpful addition for patients dealing with active rheumatoid arthritis, particularly for those who are already on other treatments.
Over the course of 52 weeks, we structured the study into two phases. The first 24 weeks were double-blind and placebo-controlled, meaning neither the patients nor the researchers knew who was receiving the actual cat's claw extract and who was getting a placebo. This approach adds credibility to the findings. After the initial phase, all patients received the plant extract for another 28 weeks.
Notably, we found that after 24 weeks of treatment with the cat's claw extract, patients experienced a significantly larger reduction in painful joints compared to those taking the placebo. The results highlighted a 53.2% decrease in painful joints with the extract versus 24.1% with the placebo, a finding we felt was particularly promising. Even in the second phase, where patients received the extract after an initial placebo, there were marked improvements in tender and swollen joints.
Importantly, throughout the study, we observed only minor side effects, suggesting that cat's claw is relatively safe for this patient population. Our findings indicate that this plant extract could be a modest but helpful addition for patients dealing with active rheumatoid arthritis, particularly for those who are already on other treatments.
Read More
User Reviews
USERS' SCORE
Good
Based on 45 Reviews
8.4
- All Reviews
- Positive Reviews
- Negative Reviews
9
Negative analysis
594 people found this helpful
The doctor prescribed treatment for herpes and chlamydia, but there was no effect from one tablet twice daily. Eventually, I tried the can of cat's claw. After taking it, my analysis results came back all negative. I’m confident that cat's claw helped, and I've ordered more.
Read More
9
Effective dietary supplement
41 people found this helpful
I purchased this to strengthen my immune system based on many positive reviews. I first tried it six or seven years ago, and it's now my top dietary supplement. I've faced severe illnesses, and I’m glad to share how it has effectively supported my health.
Read More
9
Improved health indicators
6 people found this helpful
I ordered this product based on reviews about its effectiveness against viruses, particularly HPV. After using it, my follow-up analysis showed much better indicators. I hope to eradicate HPV soon. I also took Omega and vitamins D and C alongside this. If you find this useful, please give a thumbs up. Wishing everyone good health!
Read More
10
Herpes treatment success
5 people found this helpful
This product has completely rid me of herpes; I’ve been taking it for three months now, and I no longer have that dreadful feeling when looking in the mirror. Although I haven't tried other brands, I can genuinely see its effectiveness.
Read More
9
Rapid temperature reduction
5 people found this helpful
I ordered cat's claw just in time, as two family members fell ill with high fevers. I increased the dose to 9-12 capsules daily, and by the next morning, their temperatures significantly dropped. We will continue this dosage until the viral infection fully subsides. Cat's claw is a must-have in every home.
Read More
Frequently Asked Questions
7.5
Positive health results
9 people found this helpful
After three weeks of using cat's claw, I've seen a substantial improvement in my overall health. My condition regarding mastopathy has improved, and I didn't suffer from a single cold during the winter. I will certainly order more!
9
Eczema improvement
7 people found this helpful
This manufacturer's quality is unquestionable. I've seen notable benefits regarding my autoimmune disorder, as I managed to eliminate eczema on my left hand. For my relative with systemic scleroderma, the extract provided relief, allowing us to avoid steroids.
7.5
Herpes treatment success
1 people found this helpful
I ordered this as soon as I learned of its benefits. Astonishingly, my herpes symptoms disappeared by the second day of use. Now, cat's claw will always be in my medicine cabinet.
10
Herpes treatment success
5 people found this helpful
This product has completely rid me of herpes; I’ve been taking it for three months now, and I no longer have that dreadful feeling when looking in the mirror. Although I haven't tried other brands, I can genuinely see its effectiveness.
9
Improved health indicators
6 people found this helpful
I ordered this product based on reviews about its effectiveness against viruses, particularly HPV. After using it, my follow-up analysis showed much better indicators. I hope to eradicate HPV soon. I also took Omega and vitamins D and C alongside this. If you find this useful, please give a thumbs up. Wishing everyone good health!
7
We explored the effectiveness of cat's claw in managing autoimmune disorders, specifically osteoarthritis (OA) and rheumatoid arthritis (RA). Our review included various studies, focusing on its potential as a dietary supplement to reduce inflammation and oxidative stress associated with these conditions.
From the research, we found three studies that support the use of cat's claw, whether alone or in combination with other treatments, for patients suffering from OA. However, while some evidence exists, we noted that the effectiveness of cat's claw for RA isn't as robust.
It's important to recognize, though, that the full impact of cat's claw on autoimmune disorders needs more thorough research. Many factors, including varying responses to treatment, call for caution in making solid recommendations based solely on the existing studies.
Overall, while there’s promise in using cat's claw for managing autoimmune conditions, we should approach it with realistic expectations and an understanding that further investigation is necessary before solid conclusions can be drawn.
From the research, we found three studies that support the use of cat's claw, whether alone or in combination with other treatments, for patients suffering from OA. However, while some evidence exists, we noted that the effectiveness of cat's claw for RA isn't as robust.
It's important to recognize, though, that the full impact of cat's claw on autoimmune disorders needs more thorough research. Many factors, including varying responses to treatment, call for caution in making solid recommendations based solely on the existing studies.
Overall, while there’s promise in using cat's claw for managing autoimmune conditions, we should approach it with realistic expectations and an understanding that further investigation is necessary before solid conclusions can be drawn.
7
We engaged in an interesting exploration of how a plant extract from cat's claw, specifically the pentacyclic chemotype of Uncaria tomentosa, might help those suffering from rheumatoid arthritis (RA). Our study involved forty patients who were already on medications like sulfasalazine or hydroxychloroquine, which allowed us to evaluate the extract's effectiveness in addition to these existing treatments.
Over the course of 52 weeks, we structured the study into two phases. The first 24 weeks were double-blind and placebo-controlled, meaning neither the patients nor the researchers knew who was receiving the actual cat's claw extract and who was getting a placebo. This approach adds credibility to the findings. After the initial phase, all patients received the plant extract for another 28 weeks.
Notably, we found that after 24 weeks of treatment with the cat's claw extract, patients experienced a significantly larger reduction in painful joints compared to those taking the placebo. The results highlighted a 53.2% decrease in painful joints with the extract versus 24.1% with the placebo, a finding we felt was particularly promising. Even in the second phase, where patients received the extract after an initial placebo, there were marked improvements in tender and swollen joints.
Importantly, throughout the study, we observed only minor side effects, suggesting that cat's claw is relatively safe for this patient population. Our findings indicate that this plant extract could be a modest but helpful addition for patients dealing with active rheumatoid arthritis, particularly for those who are already on other treatments.
Over the course of 52 weeks, we structured the study into two phases. The first 24 weeks were double-blind and placebo-controlled, meaning neither the patients nor the researchers knew who was receiving the actual cat's claw extract and who was getting a placebo. This approach adds credibility to the findings. After the initial phase, all patients received the plant extract for another 28 weeks.
Notably, we found that after 24 weeks of treatment with the cat's claw extract, patients experienced a significantly larger reduction in painful joints compared to those taking the placebo. The results highlighted a 53.2% decrease in painful joints with the extract versus 24.1% with the placebo, a finding we felt was particularly promising. Even in the second phase, where patients received the extract after an initial placebo, there were marked improvements in tender and swollen joints.
Importantly, throughout the study, we observed only minor side effects, suggesting that cat's claw is relatively safe for this patient population. Our findings indicate that this plant extract could be a modest but helpful addition for patients dealing with active rheumatoid arthritis, particularly for those who are already on other treatments.
References
- Rosenbaum CC, O'Mathúna DP, Chavez M, Shields K. Antioxidants and antiinflammatory dietary supplements for osteoarthritis and rheumatoid arthritis. Altern Ther Health Med. 2010;16:32. PubMed
- Mur E, Hartig F, Eibl G, Schirmer M. Randomized double blind trial of an extract from the pentacyclic alkaloid-chemotype of uncaria tomentosa for the treatment of rheumatoid arthritis. J Rheumatol. 2002;29:678. PubMed
Data last updated:
