Japanese Knotweed: A Natural Source of Resveratrol

Secure Ordering | Free Shipping | 20% Off Retail Prices

Along with providing information on whether Japanese Knotweed supplements might be right for you, this article also links to Fullscript where you can buy Japanese Knotweed supplements online through the secure healthcare formulary and get free shipping and 20% off the retail price of professional-grade supplements.

Japanese Knotweed supplements are made from a plant native to East Asia that contains a wealth of bioactive compounds including resveratrol. People looking for natural ways to enhance their wellbeing may find Japanese Knotweed an interesting option to explore.

What Is Japanese Knotweed?

Japanese knotweed, scientifically known as Fallopia japonica, has been identified as a significant source of resveratrol, a compound known for its antioxidant properties. This plant, often regarded as invasive due to its rapid growth and ability to disrupt local ecosystems, contains higher concentrations of resveratrol compared to other natural sources. The discovery of its resveratrol content has shifted some perspectives on the plant, highlighting its potential health benefits when used responsibly.

Resveratrol is known for its association with the “French Paradox,” a term describing the low incidence of heart disease in France despite a diet high in saturated fats, partly attributed to moderate red wine consumption. Resveratrol is a key ingredient in red wine, but Japanese knotweed offers a more concentrated and alcohol-free source of this antioxidant.

Scientific studies have explored the potential health benefits of resveratrol, including its ability to improve heart health, increase longevity by mimicking the effects of calorie restriction, and reduce inflammation. Its antioxidant effects may also offer protection against certain neurodegenerative diseases and some cancers. Moreover, research has indicated that resveratrol could support mental health, skin health, and blood sugar management, although more studies are needed to fully understand its efficacy and mechanisms.

The abundance of resveratrol in Japanese knotweed presents an opportunity to utilize this plant as a dietary supplement. This approach not only capitalizes on its health benefits but also proposes a use for an invasive species, potentially reducing its environmental impact. However, the management and harvesting of Japanese knotweed for resveratrol production must be conducted with care to avoid facilitating its spread.

What Are the Health Benefits of Japanese Knotweed?

  • Resveratrol Content: The high concentration of resveratrol in Japanese Knotweed offers multiple health benefits, including prevention diseases where your immune system attacks itself, like autoimmune disorders, and even cancer. It also offers neuroprotective effects and potential support in longevity and age-related conditions. /PMC5435979
  • Antioxidant Properties: Packed with antioxidants like resveratrol, these supplements combat oxidative stress in the body, protecting cells from damage caused by free radicals and potentially slowing aging processes. /PMC8705504
  • Liver Function: Supports liver health by aiding its detoxifying roles and protecting liver tissue from harmful substances, which is vital for overall bodily health. /PMC6566048
  • Vision Health: Rich in antioxidants, Japanese Knotweed supports eye health and may help in protecting against age-related vision deterioration. /PMC9317487
  • Respiratory Health: The supplement has properties that can benefit lung function, potentially aiding those with respiratory conditions. A review of 8 RCTs involving 1,123 participants with acute RTIs suggests that Japanese knotweed, used in herbal mixtures, may be an effective and safe treatment. [PMC8911541]

Is Japanese Knotweed Safe?

Japanese Knotweed, when used responsibly and in appropriate amounts, is generally considered safe for most people. Its use in traditional Asian medicine spans centuries, indicating a long-standing belief in its safety and effectiveness. Modern supplements containing Japanese Knotweed are manufactured under strict quality control guidelines, ensuring they meet safety standards. However, as with any supplement, it is crucial to adhere to recommended dosages and consult a healthcare professional, particularly for those with existing health conditions or those taking other medications. Allergic reactions are rare, and the plant is not known to have severe side effects when consumed in moderation as part of a balanced diet or as a supplement. This track record of safety makes Japanese Knotweed a promising option for those seeking natural health supplements.

Medication Interactions with Japanese Knotweed

  • Blood Thinners (e.g., Warfarin, Aspirin): Japanese Knotweed may amplify the effects of blood-thinning medications, increasing the risk of excessive bleeding. This interaction is particularly significant for those with bleeding disorders or those undergoing surgery.
  • Diabetes Medications (e.g., Insulin, Metformin): It can potentially lower blood sugar levels, which might necessitate a dosage adjustment of diabetes medications to prevent hypoglycemia, a condition of abnormally low blood sugar levels.
  • Liver Metabolized Drugs (e.g., Statins, certain pain relievers): Japanese Knotweed might influence liver enzymes that are responsible for the metabolism of a wide range of drugs, possibly leading to either decreased effectiveness or increased risk of side effects of these medications.
  • Antihypertensive Drugs (e.g., ACE inhibitors, Beta-blockers): Since Japanese Knotweed may have blood pressure-lowering properties, it can enhance the effects of antihypertensive drugs, possibly leading to blood pressure that is too low.
  • Immunosuppressants (e.g., Cyclosporine, Tacrolimus): There could be potential interactions that affect the immune system. This interaction might alter the effectiveness of immunosuppressive drugs, which is critical for individuals who have undergone organ transplants or who have autoimmune diseases.
  • Chemotherapy Drugs: Interactions with chemotherapy drugs can be complex, as Japanese Knotweed might either diminish the effectiveness of these drugs or exacerbate their side effects. This interaction is especially important for cancer patients undergoing chemotherapy treatment.

Supplement Interactions with Japanese Knotweed

  • St. John’s Wort: This herb may affect how Japanese Knotweed is metabolized in the liver, potentially reducing its effectiveness or leading to unexpected side effects. This interaction is significant for those relying on the specific benefits of Japanese Knotweed.
  • Ginkgo Biloba: Both Ginkgo Biloba and Japanese Knotweed have blood-thinning properties. When used together, they can increase the risk of bleeding, which is particularly concerning for individuals with bleeding disorders or those undergoing surgery.
  • High-dose Vitamin E: Similar to Ginkgo Biloba, the combination of high-dose Vitamin E and Japanese Knotweed could lead to an increased bleeding risk due to their cumulative blood-thinning effects.
  • Iron Supplements: Japanese Knotweed may enhance the absorption of iron, potentially leading to high iron levels in the body. This is especially important for individuals with conditions like hemochromatosis or those already on high iron intake.
  • Calcium and Magnesium Supplements: There might be interactions that affect the absorption and efficacy of these minerals. Japanese Knotweed can influence mineral metabolism, which could alter the desired balance of calcium and magnesium in the body.
  • Other Antioxidant Supplements (e.g., Selenium, Beta-Carotene): Using Japanese Knotweed with other antioxidants may amplify the overall antioxidant effect. While generally beneficial, this should be monitored to maintain a healthy balance of antioxidants in the body.
  • Garlic Supplements: Like Ginkgo Biloba and high-dose Vitamin E, garlic supplements also thin the blood. Their combined use with Japanese Knotweed could further increase the risk of bleeding, necessitating caution and medical supervision.

When you purchase linked products presented on this page, Supplement Sciences, LLC receives affiliate fees so that our dietitians can continue to create great content.

Thank you for your support!

Order Japanese Knotweed Online

Why Professionals Choose the Fullscript Formulary

Your health is on the line. Health professionals know that many other online and retail options set a very low bar for quality–sometimes amazingly low. The Fullscript formulary is the most secure online source for the highest quality brands securely sourced to assure freshness and purity. Here’s what makes Fullscript the best:

  • Meticulous vetting of brand quality. Health professionals trust Fullscript to continuously monitor the quality of each item on the platform. Other retailers operate with profit as their highest or only motive when choosing brands. Fullscript cares only about quality and reliability. Unlike discount stores, large online marketplaces, and other retailers you won’t find ingredients sourced from China or other questionable locations or companies.
  • Free shipping over $50 and best prices when you order through Supplement Sciences.
  • Freshness. Fullscript prioritizes freshness over bulk buying even if it means an increased risk of briefly being out of stock.
  • Top quality phone and online support. When you call, knowledgeable humans at Fullscript answer your questions.
  • How It Works:
    • Easy Sign-up & No Spam Email: Click the “View Product” button below to be taken to Fullscript’s login page where you can quickly create your secure account with just your name, email, and phone number. Then you will be taken directly to the product page.
    • Wide variety of supplement options: Once you sign in to your account, you are not limited to the products listed below. You will see similar items listed at the bottom of each product page on Fullscript.
    • Search For What You Want: Once inside Fullscript, you can search for the exact brands and products you want from their wide selection of quality brands.

Optimized Resveratrol Elite™ by Life Extension

Resveratrol supplements help support cardiovascular and brain health, and shield against oxidative stress. The problem is ordinary resveratrol has low bioavailability. Optimized Resveratrol Elite™ combines a highly bioavailable trans-resveratrol (the form of resveratrol found in grapes and Japanese knotweed) with an enhanced-bioavailability form of the plant polyphenol quercetin for heart and immune support. Suggested Use: Take one (1) capsule daily, or as recommended by a healthcare practitioner.

Amount Per 1 Vegetarian Capsule Serving

Resveratrol Elite™ Proprietary Blend:
18% trans-resveratrol (40 mg) [from Japanese knotweed (root)], 35% galactomannins (77 mg) [from fenugreek (seed) 222 mg

Bio-Quercetin® phytosome [providing 3 mg quercetin from Japanese sophora concentrate (flower bud), phosphatidylcholine complex from sunflower (seed)] 9 mg


Food First!

Although this article discusses supplements in detail, don’t forget that we are absolutely committed to the “Food First” approach to nutrition. When it comes to your health, the totality of your eating habits far surpasses the impact of individual nutrients or any single supplement you consume. Even though this article doesn’t delve into the broader picture of your overall diet, it’s crucial to keep this element at the forefront of our minds. Your food needs to provide all the vitamins, minerals, fiber, and phytochemicals to nourish your body systems down to the cellular level.

Food choices, rather than supplements, are the most critical factors for a healthy gut microbiome. These trillions of tiny inhabitants in your gut affect your brain waves; they orchestrate your immune system. They possess the power to create molecules that can switch genes on or off and are even capable of synthesizing neurotransmitters. Opting for organic foods and steering clear of plastic packaging (including those labeled BPA-free) is a smart move to limit toxin exposure. The sum of all these parts leads to a powerful conclusion: the ultimate key to your health lies in the quality and balance of the food you consume. Supplements are secondary.

To Sum It Up

Japanese Knotweed supplements offer a unique blend of health benefits, making them a noteworthy addition to a natural wellness regimen. Rich in antioxidants, particularly resveratrol, they support cardiovascular health, improve blood sugar management, and offer anti-inflammatory effects. These supplements also contribute to skin health, joint function, and liver detoxification. With the potential to enhance mental well-being, aid in weight management, and support overall immune function, Japanese Knotweed emerges as a multifaceted supplement. Its long history of use in traditional medicine adds to its credibility as a beneficial natural product. However, as with any supplement, it’s essential to consider your specific health needs and lifestyle when incorporating Japanese Knotweed into your routine.


This Article is Not a Substitute for Medical Advice

Dietary supplements are not designed to diagnose, treat, cure, or prevent any disease. The Supplement Sciences website seeks to provide comprehensive access to the most relevant supplement information along with convenient online ordering. We do not provide medical advice and cannot guarantee that every product suggested is completely without risk. Since each person is unique in their health history and medication use, it is important to discuss supplements with your personal physician. Specifically, pregnant women and individuals being treated for cancer or liver or kidney problems must consult their physician about every nutritional supplement they plan to take. People taking medications for the treatment of HIV or with a history of organ transplant must not take supplements without consulting with their physician.


About the Author

Supplement Sciences

If you have any thoughts on this article, feel free to share them with us by emailing them to reviews@supplement-sciences.com.

Leave a Reply