NOW Supplements Cat&#039;s Claw

172 people found this helpful

Thanks to this dietary supplement, I am still alive! The Ground Cat's Claw (CC) bark I take daily protects me from infections, including the coronavirus. My family drinks KK together, and we hardly fall ill. My wife consumes the KK extract as she has a thyroid adenoma, and it's helping her; the adenomas are reducing! Anyone who cherishes life should try this dietary supplement. You won't regret it! None of us experienced exacerbations from the powder or extract. Thank you, iHerb, for this incredible benefit!

178 people found this helpful

Back Pain details

Simply AMAZING relief! I purchased this product after researching homeopathic supplements for managing my rheumatoid arthritis and lupus. Having suffered from autoimmune issues and a hyperthyroid, I believe in using natural remedies. After my hip replacement, my lower back pain worsened. My usual supplements weren't effective, but discovering Wellspring's Omega 3s and Now Brand's Cat's Claw made a remarkable difference. Within four days, my back pain had disappeared, and my hands and feet felt significantly better. I never anticipated such immediate results and am thrilled with this product!

149 people found this helpful

Cold Sores details

I've been taking cat's claw for three years without experiencing any colds. I recommend it for its effectiveness!

A lot has been written about the wonderful properties of Uncaria Saw. I noticed that the eczema on my hands became minimal and vanished within two weeks. Initially, I suspected the rubber gloves I wear at work. Great!!!

Eczema details

Indigestion details

Consistent effectiveness

6 people found this helpful

Cat's Claw is a constant in my home. We use it for inflammation, indigestion, and flare-ups of pancreatitis. I'm well acquainted with this supplement, so I only have excellent reviews about it and always take a large quantity.

This helped me alleviate the pain from herpes zoster shingles. I recommended it to others, and it worked for them as well. When the symptoms subside, it's important to wean yourself off gradually to remain pain-free. I initially took two pills twice daily, then reduced to one pill twice daily, and eventually down to once a day after a month.

Shingles details

A fantastic find! It assists tremendously with the first symptoms of a cold! This is the best remedy we've ever used! It aided my 9-year-old child in overcoming a severe form of angina within a few days! If my review was helpful, please click yes.

Angina details

Arthritis details

Cat's claw benefits knee arthritis

Possibly Effective

Based on 5 Researches

Piscoya J, Rodriguez Z, Bustamante SA, Okuhama NN, Miller MJ, et al. Efficacy and safety of freeze-dried cat's claw in osteoarthritis of the knee: mechanisms of action of the species Uncaria guianensis. Inflamm Res. 2001;50:442.

We conducted a study to determine whether cat's claw, a medicinal plant from the Amazon, could effectively treat osteoarthritis of the knee. With 45 participants, we divided them into two groups—30 received freeze-dried Uncaria guianensis, while 15 were given a placebo. Over four weeks, we monitored their health through various assessments, including pain levels and any potential side effects.

Our findings indicated that cat's claw showed no harmful effects on participants' blood or liver function when compared to the placebo. Importantly, those taking cat's claw reported significant reductions in pain during activity and improvements in assessment scores within the first week. However, we did note that pain relief during rest or at night, as well as changes in knee circumference, were not significantly impacted in this short time frame.

In our lab tests, both U. guianensis and U. tomentosa demonstrated equivalent abilities to neutralize harmful free radicals and inhibit the production of TNFalpha, an inflammatory marker. Although cat's claw did reduce the release of another inflammatory substance, PGE2, this effect required higher concentrations than needed for TNFalpha inhibition. Overall, our study suggests that cat's claw could be an effective natural treatment option for managing knee osteoarthritis symptoms.

Quality of life restored

Most Useful Review

178 people found this helpful

Simply AMAZING relief! I purchased this after researching homeopathic supplements for managing rheumatoid arthritis. Despite past autoimmune issues, my pain and stiffness increased post-hip replacement surgery. Adding Wellspring's Organic Omega 3's and Now Brand's Cat's Claw to my regimen remarkably improved my quality of life. After only four days, my lower back pain is gone, and my hands and feet feel significantly better. I’m truly amazed and grateful for this product!

Updated: Mar 2026

Diabetes details

Having used this product for a week now, the needle-like pain in my feet and thighs has vanished. I suffered from heat in my feet, which disrupted my sleep and made sitting painful. Using Cat's claw and Panax ginseng, I’m improving daily and hope to reclaim my former self. iHerb has provided excellent service. I ordered two more and highly recommend it to others with similar issues.

Effective inflammation relief

Eye Infection details

10 people found this helpful

My husband frequently suffers from cellulitis, an inflammatory condition characterised by leg swelling and pain. This issue seems to arise when he feels fatigued and his immunity decreases, prompting visits to the hospital for antibiotic infusions. I purchased Cat's Claw as a supplement to combat inflammation. Remarkably, just two days after beginning this supplement, both the swelling and pain significantly improved. It seems to provide a complete cure! Although it may be challenging, I intend to ensure he takes it daily, including for preventative measures.

Heartburn details

I found Cat's Claw to be remarkably effective for my digestive system. After taking 2 capsules twice daily, I experienced no discomfort, nausea, or heartburn. By day two, I felt my digestive system had activated and my bowel movements increased from once to three times daily. The heaviness in my stomach and intestinal pain diminished significantly. Although I previously tried other supplements without notable improvement, Cat's Claw worked wonders. I quickly ordered a larger supply as my fungal and parasitic issues improved. My immunity has strengthened, and I feel much better overall. This supplement also offers numerous benefits, including cleansing the liver and combating infections. I highly recommend Cat's Claw for anyone seeking enhanced digestive health.

Highly effective IBS treatment

Irritable Bowel Syndrome details

3 people found this helpful

Fantastic product at a great price. It's excellent for people with irritable bowel syndrome and works better than the medical medications for bowel conditions. Additionally, it serves as an effective anti-inflammatory.

Laryngitis details

Eliminated laryngitis

I was astonished by the results – I managed to eliminate chronic sinusitis and laryngitis. My son also took it in combination with Saw Palmetto for chronic prostatitis, and the results were very positive! I followed a regimen of two capsules twice daily for three weeks, then took a 10-day break before repeating for another three weeks. Overall, my health has improved greatly – I can’t recommend it enough!

Increased quality of life

Lupus details

Simply AMAZING relief! I purchased this product after researching homeopathic supplements for managing rheumatoid arthritis and lupus. Having suffered from autoimmune issues and hyperthyroidism, I prefer natural remedies. Following hip replacement surgery, my pain and stiffness increased in my lower back, hips, hands, and feet. My current supplement regimen was inadequate. Then I discovered Wellspring's Organic Omega 3's and Now Brand's Cat's Claw, and what a difference! These two supplements have restored my quality of life. The pain in my lower back is GONE, and my hands and feet are significantly less painful and stiff after just 4 days! I never anticipated immediate results, but I received them! I'm thrilled with this product. We're also trying Source Naturals brand, which is larger in dosage but harder to swallow, whereas the NOW brand is easier for those of us who dislike large pills.

Multiple Sclerosis details

It has greatly assisted me in regaining my energy and good spirits, while also diminishing the effects of my multiple sclerosis.

Rheumatoid Arthritis details

Significant pain relief

178 people found this helpful

Simply AMAZING relief! I purchased this product after researching homeopathic supplements for managing rheumatoid arthritis and lupus. After undergoing hip replacement surgery, my pain and stiffness in my lower back, hips, hands, and feet increased. My existing regimen wasn't effective, so I added Wellspring's Organic Omega 3's and Cat's Claw. What a difference! In just 4 days, my pain has drastically reduced, and my hands and feet are significantly less painful and stiff. I never expected immediate results, but that is exactly what I received! I am thrilled and would recommend these products, though the NOW brand capsules are easier to swallow.

8 people found this helpful

Urinary Tract Infection details

This medication is invaluable for women suffering from urinary tract inflammation. After a year of struggling with antibiotics that no longer worked, I decided to try it. Within two weeks, I felt a significant improvement and continued for a month and a half. Be healthy!

Acne details

Significant improvement

125 people found this helpful

The results have been surprising. After three weeks of using cat's claw, I had some initial health issues, such as herpes and worsened tonsillitis, but these subsided. My acne has cleared up completely, and I also noticed my scar is smoothing out. My overall health has improved significantly; I sleep better and feel more energetic. I will continue my treatment.

Updated: Oct 2025

Autoimmune Disorder details

Cat's claw shows potential benefits

Possibly Effective

Based on 2 Researches

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.

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.

Negative analysis

Most Useful Review

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.

Updated: Mar 2026

Ear Infection details

My beloved home first aid kit! It helps with viruses, but I particularly value it for alleviating otitis media and reducing inflammatory ear congestion without antibiotics. I highly recommend it for children!

Fibromyalgia details

Effective pain relief

I recommend this painkiller for fibromyalgia cases. It effectively alleviates muscle pain.

2 people found this helpful

Influenza details

Cat's claw! The remedy is effective ... It's brilliant ... Everyone around has influenza, but I’m not affected! Even if I fall ill, it’s not severe and doesn’t last long.

Excellent Cat's Claw, as with most NOW supplements. I bought it again, this time with more capsules. It truly helps me with insomnia, as I take it before bed. It also benefits the pancreas and gastrointestinal tract. I sincerely recommend it. If you find my review helpful, please like it. Wishing health and peace to all!

Insomnia details

7 people found this helpful

Migraine details

Great Pain Relief! I don’t usually get headaches, but when I do, they are killer migraines! After taking 2 of these, the pain vanished in just 15 minutes!

Pneumonia details

Overcame viral pneumonia

My family all took Cat's claw during the epidemic, with my husband recovering excellently despite suffering from viral pneumonia. Along with this supplement, I combined it with pau d'arco, Vitamin C, and zinc while taking antibiotics. Within a week, my pneumonia symptoms vanished, and unlike acquaintances relying solely on antibiotics who faced severe conditions, I credit these supplements for my recovery.

11 people found this helpful

Swollen Lymph Nodes details

Impressed My wisdom tooth was growing painfully, and chlorhexidine was unavailable when my gums swelled, making swallowing difficult. In desperation, I took two capsules of Cat's Claw. Although aware of its anti-inflammatory properties, I was astonished to find no pain or swelling in the morning. Clearly, it helps the body combat harmful bacteria far better than over-the-counter anti-inflammatory medications I've tried extensively. I will certainly continue using it.

Updated: Apr 2026

Ulcer details

Uncaria tomentosa shows anti-ulcer effects

Simomura VL, Miorando D, de Oliveira BMM, Mânica A, Bohnen LC, et al. Aqueous extract of the bark of Uncaria tomentosa, an amazonian medicinal plant, promotes gastroprotection and accelerates gastric healing in rats. J Ethnopharmacol. 2024;321:117542. doi:10.1016/j.jep.2023.117542

We explored the potential of Uncaria tomentosa, a plant commonly found in the Amazon, to aid in healing gastric ulcers. Using a series of tests on rats, we treated them with an aqueous extract of the bark before inducing ulcers.

The results were promising, showing that the extract not only offered gastroprotection but also accelerated healing of ulcers. We observed that the positive effects are linked to the plant's antioxidant properties and its ability to reduce inflammation, supporting the health of the gastric mucosa.

Overall better quality

Most Useful Review

12 people found this helpful

This product has changed my life for the better! I have autoimmune ulcerative colitis, and since I started taking this supplement, my overall quality of life has improved significantly. I recommend it for anyone struggling with autoimmune illnesses, including lupus.

Updated: Mar 2026

Whooping Cough details

Cough remedied promptly

I continuously order this as I find it essential. My children began coughing, and after administering it, their cough disappeared. I highly recommend keeping it in your medicine cabinet.

Cold details

Prevents cold symptoms

7 people found this helpful

A splendid supplement for cold prevention. I was advised to take it at the first signs of a cold, and it truly works. My immune system isn't the strongest, leading to frequent colds. Since I began using this, I have noticed that I don't experience the symptoms of a cold as often.

Athlete’s Foot details

Effective cold remedy

3 people found this helpful

An excellent remedy for colds, it helps me feel better rapidly. I take it regularly to support my recovery.

Improves immunity during Chemotherapy

Chemotherapy details

274 people found this helpful

I'm undergoing breast cancer chemotherapy and a friend recommended Cat's claw. I experience stomatitis and poor immunity with chemotherapy, which is distressing. I take two tablets twice daily, and I’ve noticed no stomatitis or thrush, and my immunity feels somewhat sustained. For me, this is a significant improvement.

Cholecystitis details

Improved health overall

With low immunity, the body can be vulnerable to various acute respiratory and viral infections. I experienced symptoms such as lethargy, rapid fatigue, and constant herpes outbreaks. There were also ongoing issues with bronchitis, tonsillitis, and in children, streptococcus and staphylococcus infections. The treatment effectively aided my gallbladder and liver issues and established a harmonious process with other medications. It greatly benefited my genitourinary system, particularly during difficult epidemiological circumstances like SARS and flu season. A well-considered course, prescribed by a doctor, has addressed all these problems.

Common Cold details

An excellent supplement for colds! I always have it in my home first aid kit. My whole family takes it during colds, and it helped us get through COVID more easily.

Kidney Stones details

Improves kidney function

Good, I purchased it for my mother for her kidney treatment. She really liked it. While it does not relieve inflammation effectively, I noticed it improves kidney function. I will order more.

I recommend Cat's Claw in conjunction with grapefruit seed extract. These supplements effectively combat sinusitis, supporting the body's natural immunity without the need for antibiotics. Starting treatment early ensures milder symptoms and quicker recovery.

Sinusitis details

Bloating details

Alleviates discomfort

This is my must-have! For regular morning bowel movements and addressing issues like bloating and abdominal discomfort, I take 2 capsules before bed. It works wonders. This medication effectively resolved those concerns!

2 people found this helpful

Bone Pain details

For several years, I had pain at the base of my right thumb, making it difficult to grasp anything firmly. Since I started taking this 10 months ago, I feel almost no pain now.

1126 people found this helpful

Candidiasis details

There were some side effects, but the benefits were worth it. I ordered cat's claw for cleansing parasites and candidiasis. I followed a strict diet, including wormwood, black walnut, and clove. The result: external symptoms disappeared, and my general health improved. Chronic fatigue and nausea are gone, and I rarely catch colds now. However, I experienced terrible thirst and even had an outbreak of herpes, which I understand happens when old dormant issues resurface. I am very pleased with this product.

Cardiovascular Disease details

Miraculous supplement

118 people found this helpful

Great! It really helps improve health; I’ve felt it personally! For almost two years, I haven’t been unwell! This is a true miracle! Now, it’s my go-to supplement. I even carry a pair of capsules in my bag to halt any mild ailments before they develop. I hope my review aids you in some way. Wishing you all good health!

Chronic Fatigue Syndrome details

Increased vitality noted

4 people found this helpful

Shortly after starting treatment, I experienced a surge in energy and improved efficiency. My chronic fatigue syndrome symptoms diminished significantly, allowing me to complete tasks without feeling utterly exhausted. My mood also improved, and I found myself less prone to stress.

Liver Disease details

Cat's claw benefits liver health

Moderately Effective

Based on 3 Researches

Araujo LCC, Feitosa KB, Murata GM, Furigo IC, Teixeira SA, et al. Uncaria tomentosa improves insulin sensitivity and inflammation in experimental NAFLD. Sci Rep. 2018;8:11013. doi:10.1038/s41598-018-29044-y

We explored the effects of Uncaria tomentosa, commonly known as cat's claw, on non-alcoholic fatty liver disease (NAFLD) in two different models of obesity: mice on a high-fat diet and genetically obese mice. Both groups were experiencing insulin resistance, along with noticeable liver issues such as an excess of fat and inflammation.

The results were promising. Cat's claw treatment led to significant reductions in liver fat and inflammation across both mouse models. We observed that in the high-fat diet group, serine phosphorylation of the protein IRS-1 decreased by 25% with cat's claw treatment, which is a positive sign of enhanced insulin sensitivity.

Overall, we found that the cat's claw extract improved blood sugar control and helped to revert NAFLD to a healthier state, accompanied by reduced liver inflammation. This suggests a beneficial potential for cat's claw in tackling liver-related complications often associated with obesity.

Prevents infections

Most Useful Review

13 people found this helpful

I am now on my third bottle of Cat's Claw. It effectively detoxifies and aids liver function while removing excess fluid and helping with various poisonings. I can confidently say that I have not suffered from colds in the past three years, thanks to this remarkable product! I highly recommend it for anyone looking to boost their immune system and improve overall health.

Updated: Apr 2025

Bacterial Infection details

Effective against infections

20 people found this helpful

This supplement bolsters the immune system and shows antibacterial, antifungal, and antiviral properties. I find it particularly helpful against bacterial infections. It’s important to consult a doctor before use, as it complements cleansing programs and elevates wellbeing significantly.

Food Poisoning details

Relieves bladder issues

7 people found this helpful

I repeatedly buy Cat's Claw due to frequent bladder problems. At the onset of symptoms, I take 2 capsules thrice daily, and it resolves within days, especially if taken before meals. I also used it for my dog, who has similar issues; she easily ingests the capsule's contents, and her symptoms disappeared after a week. The price for this quality is astounding, and I ensure to keep it stocked.

8 people found this helpful

Frozen Shoulder details

Excellent product, this is not the first time I’ve taken it. I had problems with my shoulder, and after taking cat's claw along with collagen, everything improved. The tablets are easy to swallow, and the quality is exceptional. The ingredients are well balanced, resulting in a high-quality product with no unpleasant smell. Maintaining joint and ligament health is crucial, and this supplement has helped strengthen them.

Good product; I highly recommend it for boosting the immune system.

High Cholesterol details

It's a good product; I buy it for my mother as part of her complex treatment for psoriasis, and it helps her!

Psoriasis details

Toothache details

Effective for toothache

A thousand stars for this weed! It helped my husband with his toothache after we consumed three cans during a bout of ARVI. Additionally, it visibly aided in healing a wound from our cat's bite, which resolved by the next day.

117 people found this helpful

Abscess details

Helps boost my immunity! I've been using "Cat's Claw" for a long time and it's completely natural with tangible results. It has helped reduce cysts on my ovaries. I felt improvements after three weeks, with increased energy and a better quality of life. Joint pain has also lessened. Initially, I took it for chronic conditions, gradually increasing to eight capsules a day for six months. The positive results were worth it. Now, I take "Cat's Claw" twice yearly for a month at two capsules daily. A great product with no side effects!

Cat's claw's antiplatelet effects limited

Blood Clot details

Kolodziejczyk-Czepas J, Ponczek M, Sady-Janczak M, Pilarski R, Bukowska B. Extracts from Uncaria tomentosa as antiplatelet agents and thrombin inhibitors - The in vitro and in silico study. J Ethnopharmacol. 2021;267:113494. doi:10.1016/j.jep.2020.113494

Our exploration focused on how extracts from Uncaria tomentosa, popularly known as cat's claw, influence the blood clotting process. We aimed to understand whether these extracts could change the way blood plates function or affect coagulation.

To do this, we tested various concentrations of both ethanol and aqueous extracts from cat’s claw leaves and bark. We measured their impact on human blood platelet aggregation and conducted anticoagulant tests, which looked at factors like thrombin and prothrombin levels.

While we noted some slight antiplatelet effects from these extracts, they didn't showcase significant anticoagulant benefits. However, the extracts did present potential as natural inhibitors of thrombin, a critical enzyme for forming blood clots. Overall, while cat’s claw shows some promise, its effects on blood clotting may not be as impactful as we hoped.

Reduces thrombosis risk

Most Useful Review

17 people found this helpful

When administered, Cat's Claw stimulates phagocytosis in tissues, normalises the blood’s immunoglobulin balance, and improves blood flow characteristics, thereby significantly lowering the risk of thrombosis. This herb has cytostatic and anti-inflammatory properties, effectively eliminating viruses and disrupting their DNA replication mechanisms. Cat's claw has become my go-to supplement, as I've noticed a significant decrease in various viral illnesses since using it.

Updated: Mar 2026

Cancer details

Cat's claw shows anti-cancer promise

Possibly Effective

Based on 16 Researches

Zari A, Alfarteesh H, Buckner C, Lafrenie R. Treatment with Promotes Apoptosis in B16-BL6 Mouse Melanoma Cells and Inhibits the Growth of B16-BL6 Tumours. Molecules. 2021;26. doi:10.3390/molecules26041066

We explored the potential of cat's claw, a medicinal plant from Peru, as a treatment for cancer using B16-BL6 mouse melanoma cells. In controlled experiments, we treated these cancer cells with both ethanol and phosphate-buffered saline extracts of cat's claw. The results were promising, showing a remarkable reduction in cell growth—up to 80% less compared to untreated cells—and a notable increase in apoptosis, which is a form of programmed cell death essential for eliminating cancer cells.

Our in vivo studies with C57/bl mice provided further insights. Mice treated with both ethanolic and aqueous extracts of cat's claw showed a substantial decrease in tumor weight by an average of 59% and a reduction in tumor size by about 40%. We also performed histochemical analysis, which revealed a significant drop in the Ki-67 marker—indicative of cell proliferation—in the tumors of treated mice. While there was a slight increase in TUNEL staining, it was not statistically significant.

Additionally, we observed that cat's claw extracts reduced markers of angiogenesis and limited T cell infiltration into the tumors. Overall, our research indicates that cat's claw exhibits powerful anti-cancer properties, enlightening its potential as a complementary treatment in cancer therapy.

Effective for precancer

Most Useful Review

61 people found this helpful

After a cervical conization and being diagnosed with precancer, I turned to Cat's Claw as part of my antitumour complex alongside other supplements. After six months of use, my cytology revealed no atypical cells and HPV was negative. I wholeheartedly recommend it to anyone facing similar health challenges.

Updated: Apr 2026

Chronic Cough details

16 people found this helpful

It is my salvation! After a year of agony with acute respiratory infections and coughing, this wonderful drug has improved my immunity significantly! It's not just a remedy, it's genuine! Now I take it as needed during epidemics or when I feel unwell. Recently, when I had a cold, I took it three times a day for a capsule, and everything resolved in just three days. This dietary supplement is my faithful friend, and I recommend it to everyone!

Updated: Apr 2026

Hemorrhoids details

Effective for various ailments

We have been using cat's claw for various ailments for a long time. It is particularly effective at addressing the initial symptoms of nearly any infectious disease or gastrointestinal disorder, as well as joint pain. My family employed it for the challenging condition of hemorrhoids by applying sea buckthorn oil with a capsule on a cotton swab to the affected area overnight. This method might help others too. Furthermore, it works well for sore throats—just pour the contents of the capsule under the tongue and mix with saliva, allowing it to act before swallowing. I hope this review is helpful to someone. Best wishes for health!

Significant pain reduction

Leg Cramps details

I tried drinking cat's claw tea, but it was bitter, so I opted for capsules instead. I have excruciating lower back pain that radiates down my leg. Cat's claw has been the only herb that relieves this pain by approximately 97%.

117 people found this helpful

Pelvic Pain details

Cat's Claw has notably improved my immunity after long use. I originally sought help for ovarian cysts and felt vast improvements after three weeks. My overall energy surged, quality of life greatly enhanced, and joint pain has lessened. Now, I take it twice yearly as maintenance, and it’s been consistently effective with no side effects.

54 people found this helpful

Uterine Fibroids details

I found that myomas have greatly assisted my condition. I took a combination of treatments, including Cat's Claw and Pau d'Arco. For two months, I consumed these supplements alongside Quarantil to enhance blood circulation. I was advised that myomas stem from poor circulation, not just hormonal issues. After this regimen, my myoma measuring 1.7 x 1.2 has resorbed, and I no longer have a small cyst in my left ovary.

Yeast Infection details