Key Takeaways
Hokkaido Wild Knotweed
Features Ooi Tadori (大痛取), a wild grass from Hokkaido containing resveratrol and other polyphenols, traditionally valued by Ainu people.
Simple Daily Routine
Take just 3 small capsules daily with water. Easy to incorporate into your morning or evening routine.
Premium Glucosamine
Contains 1,000mg of high-purity domestically refined glucosamine per daily serving for comprehensive joint support.
Traditional Japanese Wisdom
Based on Ainu traditional knowledge of Hokkaido wild plants, now available in convenient supplement form.
Best For
Those who want to continue enjoying walks, shopping, and travel with comfortable movement and flexible joints.
Synergistic Formula
Six carefully selected ingredients including Type II Collagen, Chondroitin, Red Ginger, and Sake Yeast work together.
Is This Right For You?
Recommended For
This Japanese knotweed supplement is designed for those seeking natural support for comfortable movement and joint health.
If you want to continue enjoying walks, shopping trips, and travel without discomfort
If you're looking for a supplement that combines traditional Japanese wisdom with modern formulation
If you've tried other joint supplements but want something with a unique Hokkaido botanical ingredient
If you're seeking daily support for active living and smooth movement
If you want to maintain your independence and continue doing activities you love
If you're interested in Japanese knotweed benefits and want a trusted Japanese formulation
If you want a simple 3-capsules-per-day routine that fits easily into your lifestyle
If you're looking for comprehensive support combining cartilage nutrients with traditional herbs
Why It Works
Benefits
Itadori delivers comprehensive support through Hokkaido wild knotweed combined with proven joint-support nutrients.
Supports Joint Comfort & Flexibility
Ooi Tadori from Hokkaido combined with 1,000mg Glucosamine and Chondroitin provides comprehensive support for joint comfort. Type II Collagen, abundant in cartilage, complements the formula to support flexibility and smooth movement throughout your day.
Research-backed joint nutrientsHarnesses Resveratrol-Rich Polyphenols
Ooi Tadori (Japanese Knotweed) contains resveratrol and other polyphenols that have attracted scientific attention. These natural compounds are concentrated in plants that survive harsh Hokkaido winters, potentially contributing to the plant's traditional reputation.
Contains natural polyphenolsPromotes Comfortable Daily Movement
Red Ginger supports healthy circulation, while Sake Yeast provides amino acids that complement glucosamine. Together with the cartilage-supporting nutrients, this formula aims to help you maintain an active, comfortable lifestyle.
Synergistic ingredient blendBuilds on Traditional Ainu Wisdom
The Ainu people of Hokkaido have long valued Ooi Tadori as a health resource, calling it 'Kuttar' and incorporating it into their traditional practices. This Japanese knotweed supplement brings ancient wisdom into a modern, convenient form.
Traditional use heritageThe Science
How It Works
Understanding how this Japanese knotweed supplement supports your body's natural joint health.
Ooi Tadori: Cold-Resistant Hokkaido Knotweed
In this extreme environment, the plant absorbs abundant minerals and grows vigorously. The kanji characters (大痛取) reflect its traditional significance.
Recent research has revealed it contains resveratrol and other polyphenols.
Cartilage Support Nutrients
- Glucosamine (1,000mg) - helps maintain cartilage structure
- Chondroitin - acts like a lubricant supporting elasticity
- Type II Collagen - primary collagen found in cartilage
Circulation & Metabolic Support
Sake Yeast provides amino acids that work synergistically with glucosamine. These supporting ingredients help ensure the joint nutrients can be effectively utilized by your body.
The Science
Research & Evidence
What science tells us about the key ingredients in this Japanese knotweed supplement.
Complete Ingredient Profile—6 carefully selected ingredients with synergistic benefits: Ooi Tadori extract, Glucosamine (1,000mg daily), Type II Collagen, Chondroitin, Red Ginger, and Sake Yeast.
Hokkaido Sourcing & Survival—Ooi Tadori survives extreme -40°C temperatures in Hokkaido winters. Wild-harvested by local specialists and carefully sorted at local processing facilities.
A Note on Evidence: We present research on ingredients, not specific product claims. Individual results may vary. This supplement is not intended to diagnose, treat, cure, or prevent any disease.
Ingredient Research Highlights
RESVERATROL
Resveratrol is a polyphenol found in various plants including Japanese knotweed, grapes, and berries. It has been studied for its antioxidant properties and potential health benefits. Ooi Tadori naturally contains resveratrol along with other polyphenols.
Polyphenol research literatureGLUCOSAMINE
Glucosamine is a natural compound found in cartilage. Supplemental glucosamine, typically derived from shellfish, has been widely studied for joint health support. The 1,000mg daily dose uses high-purity domestically refined glucosamine.
Joint health researchTYPE II COLLAGEN & CHONDROITIN
Type II Collagen is the primary collagen found in cartilage tissue. Chondroitin sulfate is a major component of cartilage that helps retain water and provides cushioning. These nutrients are commonly combined in joint-support formulations.
Cartilage biology researchThe Story
About Brand Story
My Care Co., Ltd
The company prioritizes domestically sourced ingredients, avoids artificial additives, and manufactures in GMP-certified Japanese facilities. Rather than chasing trends, My Care creates products customers can trust for a lifetime—bringing Japan's countryside warmth directly to their doorsteps.
Our Curation Process
Why We Selected This Product
Every product at Naturacare undergoes rigorous evaluation before joining our collection.
独自性
Uniqueness
Itadori stands out by combining traditional Ainu wisdom with modern joint-support nutrients. The Hokkaido-sourced Ooi Tadori offers something not found in typical glucosamine supplements.
品質
Quality Sourcing
Wild-harvested by local specialists in Hokkaido, each batch of Ooi Tadori is carefully sorted and processed. The glucosamine is domestically refined for high purity.
伝統
Traditional Heritage
Rooted in Ainu traditional knowledge passed down through generations. Place names like Kuttari and Lake Kuttara in Hokkaido still reflect the historical significance of this plant.
Our Promise: We don't just import popular Japanese supplements - we investigate each product's formulation, manufacturing standards, and real-world reputation in Japan.
Itadori earned its place in our collection because it combines rare Hokkaido wild botanicals with proven joint nutrients. This is the kind of unique, quality product that exemplifies our select shop philosophy.
Why Japan
The Japanese Advantage
Japan's supplement industry operates under some of the world's strictest quality standards. Combined with a cultural dedication to craftsmanship and centuries of wellness traditions, Japanese supplements represent a level of quality that's difficult to find elsewhere.
Rigorous Quality Standards
Japanese regulations require comprehensive testing at every stage of production, with standards that often exceed international requirements.
GMP-Certified Manufacturing
All our products come from facilities that meet Japan's strict GMP (Good Manufacturing Practice) certification requirements.
Centuries of Tradition
Many Japanese supplements draw on ingredients and formulations refined over generations, combining ancient wisdom with modern science.
Transparent Sourcing
Japanese manufacturers maintain complete traceability, so you know exactly where every ingredient comes from.
Directions
How to Use
Simple daily routine for optimal results.
You can take all 3 capsules at once or divide them throughout the day.
There is no specific required timing - choose what works best for your routine.
Tips for Best Results
- Take consistently at the same time each day to build a routine
- Can be taken with or without food
- Store in a cool, dry place away from direct sunlight
- Do not exceed the recommended daily intake of 3 capsules
- Allow 2-4 weeks for initial benefits; continue for optimal results
- If you experience any unusual reactions, discontinue use
What's Inside
Ingredients
Six carefully selected ingredients combining traditional Hokkaido botanicals with proven joint-support nutrients.
Ooi Tadori Extract
Wild knotweed from Hokkaido containing resveratrol polyphenols
Glucosamine
High-purity domestically refined joint nutrient (from shrimp/crab)
Type II Collagen
Primary collagen found in cartilage, from chicken cartilage extract
Ingredients: Ooi Tadori young shoot extract (オオイタドリ若芽エキス末), Sake yeast (清酒酵母), Chicken cartilage extract containing Type II Collagen and Chondroitin sulfate (鶏軟骨抽出物), Red ginger extract (赤ショウガエキス末), Glucosamine from shrimp/crab (グルコサミン), HPMC, Crystalline cellulose (結晶セルロース), Calcium stearate (ステアリン酸カルシウム), Caramel color (カラメル色素), Silicon dioxide (微粒二酸化ケイ素)
Allergen Information: Contains: Shrimp (エビ), Crab (カニ), Chicken (鶏). Not suitable for those with allergies to shrimp, crab, or chicken products.
Important Information
Safety & Precautions
Please read before use.
Allergies
This product contains glucosamine derived from shrimp and crab, and Type II Collagen/Chondroitin from chicken. If you have allergies to these foods, do not use this product.
Pregnancy & Nursing
While this is a health food supplement, pregnant and nursing women should consult their healthcare provider before use.
Children
This product is not designed for children. Keep out of reach of children to prevent choking on capsules.
Medications
If you are taking prescription medications, consult your doctor or pharmacist before starting this supplement.
Dosage
The recommended amount is 3 capsules per day. Do not exceed this amount. This is a dietary supplement, not a medicine.
Discontinue Use
If you experience any adverse effects, discontinue use immediately.
Storage
Keep in a cool, dry place away from direct sunlight and heat. After opening, consume promptly.
Disclaimer
This is a dietary supplement, not a medicine. It supports wellness but does not treat, cure, or prevent any disease.
Details
Product Specifications
Questions
Frequently Asked Questions
This formula combines Ooi Tadori (a knotweed variety rich in resveratrol polyphenols) with Glucosamine, Chondroitin, and Type II Collagen to support comfortable daily movement and joint flexibility.
While resveratrol supplements often extract this single compound, Itadori uses whole Ooi Tadori extract that contains resveratrol along with other beneficial polyphenols found naturally in the plant.
It has been traditionally valued by Ainu people in Japan. In this supplement, it's combined with joint-support nutrients like Glucosamine and Chondroitin for comprehensive benefits.
Pregnant or nursing women and those on medications should consult healthcare providers first. Children should not take this product.
The kanji characters literally mean 'big pain remover.' It survives extreme temperatures down to -40°C and has been traditionally used by Ainu people. It contains resveratrol and other polyphenols.
For best results, take consistently as part of your daily routine. Do not exceed the recommended 3 capsules per day.
For optimal benefits, the manufacturer recommends continuing use over several months. Consistency is key to experiencing the full benefits of this Japanese knotweed supplement.
However, if you experience any adverse effects, discontinue use. Consult your healthcare provider if you have specific health concerns.