{"id":11419302,"date":"2026-10-20T21:55:40","date_gmt":"2026-10-20T18:55:40","guid":{"rendered":"https:\/\/nostylelike.net\/cats-claw-side-effects\/"},"modified":"2026-10-20T21:56:39","modified_gmt":"2026-10-20T18:56:39","slug":"cats-claw-side-effects","status":"publish","type":"post","link":"https:\/\/nostylelike.net\/en\/cats-claw-side-effects\/","title":{"rendered":"Cat&#8217;s Claw Side Effects: 7 Risks and Interactions to Know"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_88 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/nostylelike.net\/en\/cats-claw-side-effects\/#Is_cats_claw_safe\" >Is cat&#8217;s claw safe?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/nostylelike.net\/en\/cats-claw-side-effects\/#Common_cats_claw_side_effects\" >Common cat&#8217;s claw side effects<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/nostylelike.net\/en\/cats-claw-side-effects\/#1_Digestive_upset\" >1. Digestive upset<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/nostylelike.net\/en\/cats-claw-side-effects\/#2_Dizziness_and_low_blood_pressure\" >2. Dizziness and low blood pressure<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/nostylelike.net\/en\/cats-claw-side-effects\/#3_Rare_kidney_and_liver_reports\" >3. Rare kidney and liver reports<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/nostylelike.net\/en\/cats-claw-side-effects\/#Who_faces_more_cats_claw_side_effects\" >Who faces more cat&#8217;s claw side effects?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/nostylelike.net\/en\/cats-claw-side-effects\/#4_Pregnancy_breastfeeding_and_trying_to_conceive\" >4. Pregnancy, breastfeeding and trying to conceive<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/nostylelike.net\/en\/cats-claw-side-effects\/#5_Autoimmune_disease_and_organ_transplants\" >5. Autoimmune disease and organ transplants<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/nostylelike.net\/en\/cats-claw-side-effects\/#Cats_claw_side_effects_from_drug_interactions\" >Cat&#8217;s claw side effects from drug interactions<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/nostylelike.net\/en\/cats-claw-side-effects\/#6_Blood_thinners_and_surgery\" >6. Blood thinners and surgery<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/nostylelike.net\/en\/cats-claw-side-effects\/#7_Blood-pressure_drugs_and_CYP3A4_medicines\" >7. Blood-pressure drugs and CYP3A4 medicines<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/nostylelike.net\/en\/cats-claw-side-effects\/#How_to_reduce_cats_claw_side_effects\" >How to reduce cat&#8217;s claw side effects<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/nostylelike.net\/en\/cats-claw-side-effects\/#Why_do_cats_claw_side_effects_vary_between_people\" >Why do cat&#8217;s claw side effects vary between people?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/nostylelike.net\/en\/cats-claw-side-effects\/#When_cats_claw_side_effects_need_a_doctor\" >When cat&#8217;s claw side effects need a doctor<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/nostylelike.net\/en\/cats-claw-side-effects\/#Frequently_asked_questions_about_cats_claw_side_effects\" >Frequently asked questions about cat&#8217;s claw side effects<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/nostylelike.net\/en\/cats-claw-side-effects\/#How_soon_do_cats_claw_side_effects_appear\" >How soon do cat&#8217;s claw side effects appear?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/nostylelike.net\/en\/cats-claw-side-effects\/#Can_I_take_it_with_arthritis_painkillers\" >Can I take it with arthritis painkillers?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/nostylelike.net\/en\/cats-claw-side-effects\/#Is_it_suitable_for_people_with_diabetes\" >Is it suitable for people with diabetes?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/nostylelike.net\/en\/cats-claw-side-effects\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<h2 id=\"top\"><span class=\"ez-toc-section\" id=\"Is_cats_claw_safe\"><\/span>Is cat&#8217;s claw safe?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Cat&#8217;s claw is generally well tolerated by most adults at usual doses for short periods, but that does not mean it is risk-free. Knowing the possible <strong>cat&#8217;s claw side effects<\/strong> is essential before you start, especially if you take regular medicines or have an immune condition. Here are 7 side effects and interactions worth knowing.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Common_cats_claw_side_effects\"><\/span>Common cat&#8217;s claw side effects<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"1_Digestive_upset\"><\/span>1. Digestive upset<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The most commonly reported complaints are nausea, diarrhoea and stomach discomfort. Taking the capsules with food, as the <a href=\"https:\/\/nostylelike.net\/en\/product\/now-cats-claw-500-mg-100-veg-capsules\/\">NOW Cat&#8217;s Claw<\/a> label suggests, may reduce these cat&#8217;s claw side effects.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"2_Dizziness_and_low_blood_pressure\"><\/span>2. Dizziness and low blood pressure<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Cat&#8217;s claw may lower blood pressure slightly, which can cause dizziness, especially when standing up quickly. The risk is higher if you already take blood-pressure medicines.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"3_Rare_kidney_and_liver_reports\"><\/span>3. Rare kidney and liver reports<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Rare but serious cat&#8217;s claw side effects include kidney or liver problems. It was not always proven to be the cause, but it is reason enough to stop it if you notice yellow eyes, dark urine or swollen ankles.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Who_faces_more_cats_claw_side_effects\"><\/span>Who faces more cat&#8217;s claw side effects?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"4_Pregnancy_breastfeeding_and_trying_to_conceive\"><\/span>4. Pregnancy, breastfeeding and trying to conceive<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Cat&#8217;s claw should not be used during pregnancy or breastfeeding. The <a href=\"https:\/\/nostylelike.net\/en\/product\/solaray-cats-claw-500-mg-100-vegcaps\/\">Solaray Cat&#8217;s Claw<\/a> label clearly says not to use it during pregnancy or when trying to become pregnant, and NOW does not recommend it for pregnant or nursing women.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"5_Autoimmune_disease_and_organ_transplants\"><\/span>5. Autoimmune disease and organ transplants<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Because cat&#8217;s claw may stimulate parts of the immune system, it could worsen conditions such as lupus or multiple sclerosis, or weaken the effect of anti-rejection drugs after a transplant. Anyone on immunosuppressants should avoid it unless their doctor decides otherwise.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cats_claw_side_effects_from_drug_interactions\"><\/span>Cat&#8217;s claw side effects from drug interactions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"6_Blood_thinners_and_surgery\"><\/span>6. Blood thinners and surgery<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Cat&#8217;s claw may slightly reduce blood clotting, raising the risk of bleeding with warfarin, aspirin or clopidogrel. For this reason it should be stopped at least 2 weeks before any surgery.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"7_Blood-pressure_drugs_and_CYP3A4_medicines\"><\/span>7. Blood-pressure drugs and CYP3A4 medicines<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>With blood-pressure medicines, pressure may fall too far. Cat&#8217;s claw may also affect the liver enzyme CYP3A4, which breaks down many drugs, such as some cholesterol medicines, antifungals and HIV medicines, changing their levels in the blood.<\/p>\n<table style=\"border-collapse:collapse;width:100%;border:1px solid #e5e7eb\">\n<thead>\n<tr style=\"background:#f3f4f6\">\n<th style=\"border:1px solid #e5e7eb;padding:8px\">Situation<\/th>\n<th style=\"border:1px solid #e5e7eb;padding:8px\">Advice<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #e5e7eb;padding:8px\">Pregnancy, breastfeeding or trying to conceive<\/td>\n<td style=\"border:1px solid #e5e7eb;padding:8px\">Do not use<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #e5e7eb;padding:8px\">Autoimmune disease or organ transplant<\/td>\n<td style=\"border:1px solid #e5e7eb;padding:8px\">Avoid unless your doctor agrees<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #e5e7eb;padding:8px\">Blood thinners or blood-pressure drugs<\/td>\n<td style=\"border:1px solid #e5e7eb;padding:8px\">Ask your doctor before starting<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #e5e7eb;padding:8px\">Upcoming surgery<\/td>\n<td style=\"border:1px solid #e5e7eb;padding:8px\">Stop 2 weeks before<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"How_to_reduce_cats_claw_side_effects\"><\/span>How to reduce cat&#8217;s claw side effects<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>Stick to the label dose: for NOW, 2 capsules 2 to 3 times daily with food; for Solaray, 1 capsule three times daily with a meal.<\/li>\n<li>Start at the lowest dose and watch how you feel for a week.<\/li>\n<li>Show your full list of medicines to your pharmacist.<\/li>\n<li>Do not stack several anti-inflammatory herbs without advice.<\/li>\n<li>Stop it and see your doctor if anything unusual happens.<\/li>\n<\/ul>\n<p>To judge whether the supplement is worth trying, read <a href=\"https:\/\/nostylelike.net\/en\/cats-claw-benefits\/\">cat&#8217;s claw benefits<\/a>, and if you have osteoarthritis or rheumatoid arthritis, read <a href=\"https:\/\/nostylelike.net\/en\/cats-claw-for-arthritis\/\">cat&#8217;s claw for arthritis<\/a>.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Why_do_cats_claw_side_effects_vary_between_people\"><\/span>Why do cat&#8217;s claw side effects vary between people?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Responses depend on age, other medicines, and kidney and liver health, and the level of active compounds varies between products. Choose a product from a known brand that states the amount of bark per capsule, such as the two 500 mg products above, and avoid unlabelled blends.<\/p>\n<p>Long-term use without follow-up is not advised, because most studies lasted only weeks or a few months and there is little data on long-term safety. Older adults on several medicines are more exposed to interactions and need regular reviews; see <a href=\"https:\/\/nostylelike.net\/en\/joint-pain-relief-for-seniors\/\">joint pain relief for seniors<\/a>.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"When_cats_claw_side_effects_need_a_doctor\"><\/span>When cat&#8217;s claw side effects need a doctor<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>Severe dizziness or fainting.<\/li>\n<li>Unusual bleeding or bruising.<\/li>\n<li>Yellow eyes or skin, or dark urine.<\/li>\n<li>Reduced urine or swollen feet.<\/li>\n<li>A flare of an autoimmune condition.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Frequently_asked_questions_about_cats_claw_side_effects\"><\/span>Frequently asked questions about cat&#8217;s claw side effects<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"How_soon_do_cats_claw_side_effects_appear\"><\/span>How soon do cat&#8217;s claw side effects appear?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Digestive symptoms usually appear in the first days, while kidney and liver problems are rare and may appear later.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Can_I_take_it_with_arthritis_painkillers\"><\/span>Can I take it with arthritis painkillers?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>With paracetamol there is usually no problem, but with anti-inflammatory painkillers the bleeding risk adds up, so ask your doctor.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Is_it_suitable_for_people_with_diabetes\"><\/span>Is it suitable for people with diabetes?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>There is not enough evidence, so check with your doctor and monitor your blood sugar.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Cat&#8217;s claw side effects are usually mild, such as nausea, diarrhoea and dizziness, but the real risks lie in pregnancy, autoimmune disease, organ transplants and interactions with blood thinners and blood-pressure drugs. It is not a replacement for rheumatology treatment. You can find <a href=\"https:\/\/nostylelike.net\/en\/product\/now-cats-claw-500-mg-100-veg-capsules\/\">NOW Cat&#8217;s Claw<\/a> and <a href=\"https:\/\/nostylelike.net\/en\/product\/solaray-cats-claw-500-mg-100-vegcaps\/\">Solaray Cat&#8217;s Claw<\/a> at No Style Like pharmacy.<\/p>\n<p style=\"font-size:0.95em;color:#555;margin-top:18px;\">This article was reviewed by the No Style Like pharmacy content team. It is for general awareness only and does not replace advice from your doctor or pharmacist.<\/p>\n<p style=\"font-size:0.95em;color:#555;\">Stop cat&#8217;s claw 2 weeks before surgery and ask your doctor if you take blood thinners, blood-pressure medicines or immunosuppressants. For more information see <a href=\"https:\/\/www.nccih.nih.gov\/health\/cats-claw\" target=\"_blank\" rel=\"noopener nofollow\">the NCCIH cat&#8217;s claw page<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cat&#8217;s claw side effects: nausea, diarrhoea and dizziness, who must avoid it, and interactions with blood thinners, blood-pressure drugs and immunosuppressants.<\/p>\n","protected":false},"author":86,"featured_media":11419299,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[42204],"tags":[],"class_list":["post-11419302","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dietary-supplements"],"_links":{"self":[{"href":"https:\/\/nostylelike.net\/en\/wp-json\/wp\/v2\/posts\/11419302","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nostylelike.net\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nostylelike.net\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nostylelike.net\/en\/wp-json\/wp\/v2\/users\/86"}],"replies":[{"embeddable":true,"href":"https:\/\/nostylelike.net\/en\/wp-json\/wp\/v2\/comments?post=11419302"}],"version-history":[{"count":0,"href":"https:\/\/nostylelike.net\/en\/wp-json\/wp\/v2\/posts\/11419302\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nostylelike.net\/en\/wp-json\/wp\/v2\/media\/11419299"}],"wp:attachment":[{"href":"https:\/\/nostylelike.net\/en\/wp-json\/wp\/v2\/media?parent=11419302"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nostylelike.net\/en\/wp-json\/wp\/v2\/categories?post=11419302"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nostylelike.net\/en\/wp-json\/wp\/v2\/tags?post=11419302"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}