Key Takeaways
Pure Kale Formulation
100% domestic Japanese kale with zero additives, preservatives, or sweeteners. Each stick equals approximately 50g of fresh kale.
Convenient Daily Routine
Simply mix one 7g stick with 100-150ml of water, milk, or your preferred beverage. Dissolves quickly.
Quality Assured
Cultivated without agricultural chemicals or chemical fertilizers. Every batch undergoes residual pesticide testing.
Heritage Brand
Q'SAI has been producing premium aojiru for over 40 years, Japan's trusted name in kale supplements.
Best For
Those struggling to consume recommended daily vegetables or seeking natural bone health support without synthetic additives.
Nutritional Powerhouse
Kale outperforms barley grass in calcium (1942.8mg vs 293.0mg per 100g), magnesium, and vitamin E content.
Is This Right For You?
Recommended For
The Kale is ideal for those seeking pure, natural kale powder to supplement their daily vegetable intake and support overall nutritional balance.
If you're finding it challenging to consume the recommended 350g of daily vegetables through regular meals
If you've experienced insufficient calcium and vitamin intake from your regular diet alone
If you're seeking natural bone health support and want to help maintain bone density as you age
If you're a busy professional needing convenient nutritional supplementation during hectic schedules
If you want to improve digestive regularity with natural dietary fiber from whole-food sources
If you're interested in immune system support through antioxidant-rich green vegetables
If you value pesticide-free, chemical-free nutritional products with transparent sourcing
If you want an easy way to add green nutrition without changing your entire diet or meal prep routine
Why It Works
Benefits
The Kale delivers concentrated nutrition from Japan's most trusted green vegetable source.
Support Bone Health Naturally
The Kale provides 126mg of calcium and 150ug of vitamin K per serving. Vitamin K activates proteins essential for calcium binding in bone tissue, working synergistically to support bone density maintenance.
Nutritional Functional Food (Vitamin K)Promote Digestive Regularity
Each 7g serving contains 2.7g of dietary fiber, supporting healthy bowel movements and nurturing beneficial gut bacteria. Many users report improved regularity within the first week.
Research-backed whole-food nutritionComprehensive Antioxidant Protection
Rich in beta-carotene, vitamin C (14mg per serving), and vitamin E, The Kale provides broad-spectrum antioxidant support against cellular damage from daily environmental stressors.
Whole-food antioxidantsFill Nutritional Gaps Conveniently
One stick delivers nutrition comparable to 114g of milk (calcium), 6.2 bell peppers (beta-carotene), and 2.7 celery stalks (fiber). Concentrated nutrition for busy lifestyles.
Verified nutritional contentThe Science
How It Works
Understanding how The Kale delivers concentrated nutrition to your body.
Freeze-Crushing Preservation Technology
Key benefits:
- Maximum nutrient retention vs standard drying
- Quick dissolution in liquid
- Efficient absorption into your system
Vitamin K and Calcium Synergy
This works synergistically with calcium (126mg per serving) to support bone density maintenance and cardiovascular health.
Superior Kale Cultivation
Compared to barley grass (per 100g):
- Calcium: 1942.8mg vs 293.0mg
- Magnesium: 228.5mg vs 88.8mg
- Vitamin E: 11.4mg vs 6.8mg
The Science
Research & Evidence
What makes kale a nutritional powerhouse and how Q'SAI ensures quality.
Nutritional Comparison: Kale vs Barley Grass—Q'SAI research demonstrates kale's nutritional superiority with significantly higher calcium (1942.8mg vs 293.0mg), magnesium (228.5mg vs 88.8mg), and vitamin E (11.4mg vs 6.8mg) per 100g.
Nutritional Equivalents Per Serving—Each 7g stick provides nutrition equivalent to 114g milk (calcium), 2.7 celery stalks (fiber), 6.2 bell peppers (beta-carotene), and 125 tbsp sesame (vitamin E).
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
KALE (BRASSICA OLERACEA)
Kale is recognized as a nutrient-dense superfood containing high concentrations of vitamins, minerals, and antioxidants. Particularly valued for vitamin K content supporting bone health and blood clotting functions.
Japanese Food Composition Tables; Nutritional science researchVITAMIN K
Vitamin K is essential for activating proteins involved in bone mineralization and blood clotting. Research indicates adequate intake supports bone density maintenance. Q'SAI's Kale is classified as a Nutritional Functional Food for Vitamin K.
Nutritional function food designation requirementsDIETARY FIBER
Dietary fiber promotes healthy digestive function by supporting regular bowel movements and providing substrate for beneficial gut bacteria. Adequate intake is associated with improved digestive comfort.
Nutritional research on dietary fiberThe Story
About Brand Story
Q’SAI Co., Ltd.
Now positioning itself as a "Well-Aging Company," Q'SAI has expanded beyond its flagship kale products into healthcare supplements and skincare, including the popular Colarich all-in-one beauty gel. All kale is grown without chemical pesticides at their dedicated farm in Shimane Prefecture.
Our Curation Process
Why We Selected This Product
Every product at Naturacare undergoes rigorous evaluation before joining our collection.
純粋
Purity
100% pure domestic kale with absolutely no additives, preservatives, colorants, or sweeteners. What you see is what you get - nothing but concentrated kale nutrition in every stick.
伝統
Heritage & Tradition
Q'SAI has dedicated over 40 years to perfecting kale cultivation and processing. This isn't a trend-chasing product - it's the culmination of decades of Japanese agricultural expertise.
透明性
Transparency
Complete traceability from farm to package. Q'SAI maintains control over cultivation through their own farms and contracted domestic growers, with rigorous pesticide testing on every batch.
Our Promise: We don't just import popular Japanese supplements - we investigate each product's formulation, manufacturing standards, and real-world reputation in Japan.
We selected The Kale because it represents the gold standard in Japanese green nutrition. Q'SAI's uncompromising commitment to purity and quality aligns perfectly with our mission.
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.
Stir thoroughly with a spoon or shaker until completely dissolved, approximately 15-20 seconds.
Recommended daily intake is 1-2 stick packs for optimal nutritional supplementation. First-time users should start with one stick daily and gradually increase based on individual tolerance.
Tips for Best Results
- Consume immediately after mixing for best flavor and nutritional value
- Do not prepare in advance or store mixed beverages
- Can be mixed with yogurt, apple juice, or smoothies for variety
- Use a shaker bottle for smoother consistency
- Store sticks in a cool, dry place away from direct sunlight
- Open individual stick packs and consume entirely - do not store partial servings
What's Inside
Ingredients
Single-ingredient purity - 100% pure domestic kale.
Vitamin K
Supports bone health and blood clotting functions
Calcium
Essential mineral for bone density maintenance
Dietary Fiber
Promotes healthy digestion and gut bacteria
Ingredients: Kale (domestically produced in Japan)
Allergen Information: Contains: None of the specified allergens. Free from: Dairy, eggs, wheat, peanuts, shrimp, crab, buckwheat, tree nuts, soybeans, fish.
Important Information
Safety & Precautions
Please read before use.
Anticoagulant Medication (CRITICAL)
DO NOT use if taking Warfarin (Coumadin) or other anticoagulant medications. This product contains high levels of vitamin K (150ug per serving) which interferes with blood-thinning medication effectiveness.
Allergies
Check the ingredient list if you have food allergies. This product contains only kale but is not recommended for individuals with allergies to cruciferous vegetables.
Medical Conditions
Individuals with kidney disease or potassium restrictions should consult their physician before consumption. Those taking prescription medications should seek doctor's approval before starting.
Pregnancy & Nursing
Pregnant and nursing women should consult healthcare providers before regular use, although the product is generally considered safe.
Dosage
Recommended 1-2 sticks per day. First-time users should start with smaller amounts and gradually increase. Do not exceed recommended daily intake.
Storage
Keep in a cool, dry place away from direct sunlight, high temperatures, and humidity. Keep out of reach of children under 3 years. Consume individual stick pack immediately after opening.
Details
Product Specifications
Questions
Frequently Asked Questions
The Kale delivers these benefits in a convenient, easy-to-use format.
First-time users should start with one stick and gradually increase. However, those taking blood-thinning medications like Warfarin should avoid this product due to its vitamin K content.
Consume immediately after mixing - do not prepare in advance. For variety, add to yogurt, smoothies, or apple juice. Consistency is key for optimal results.
The dried powder format offers more consistent nutrient delivery than fresh kale, which can vary in quality.
The Kale's single-ingredient purity means no fillers or additives - just concentrated kale nutrition from 40+ years of Japanese expertise.
Start gradually and monitor tolerance. Consult a pediatrician for children under 3. Keep out of reach of young children.
Taking them together may improve overall iron uptake effectiveness.
Individual results vary based on overall diet and lifestyle factors. Consistency is more important than any single dose.
Room temperature or moderately warm drinks preserve maximum nutritional value while maintaining pleasant taste.
Look for products specifying 100% domestic Japanese kale and pesticide-free cultivation for highest quality.