Key Takeaways
Triple-Action Formula
Three patented functional ingredients - Mulberry Leaf Iminosugar, Chitosan, and Camellia Flower Saponin - work synergistically to help block sugar and fat absorption from meals.
Simple Daily Use
Just 3 easy-to-swallow tablets per serving, taken before or during meals. Use up to 3 times daily for continuous support.
Clinically Validated
Clinical studies confirmed this patented combination (Patent No. 6633173) effectively suppresses post-meal blood sugar and blood triglyceride increases.
Japanese Functional Food
Officially registered as a Functional Food (E294) with verified health claims backed by scientific evidence from Japan's Consumer Affairs Agency.
Best For
Those who enjoy meals with carbohydrates and fats but want to maintain healthy blood sugar and lipid levels without strict dietary restrictions.
Japan's No.1 Diet Supplement
Calorie Limit series has achieved 92 million units sold and 8 consecutive years as Japan's top-selling supplement in the diet supplement market.
Is This Right For You?
Recommended For
FANCL Calorie Limit is designed as a carb blocker supplement for those who want to enjoy their favorite foods while supporting healthy blood sugar and fat metabolism.
If you're someone who wants to enjoy meals without worrying about sugar and fat intake
If you've been experiencing difficulty maintaining healthy body weight despite dietary efforts
If you're concerned about post-meal blood sugar and blood lipid level spikes
If you frequently consume carbohydrate-rich or high-fat meals at restaurants or social gatherings
If you're seeking scientifically-validated support for balanced nutrition and metabolism
If you're looking for convenient daily supplementation with clinically-tested ingredients backed by functional food status
If you want to support healthy eating habits as part of an active lifestyle
If you're interested in proactive nutritional management with patented Japanese technology
Why It Works
Benefits
FANCL Calorie Limit delivers comprehensive meal support through three clinically-tested functional ingredients that work together.
Helps Block Carbohydrate Absorption
Mulberry Leaf Iminosugar inhibits alpha-glucosidase enzymes in the intestine, slowing down the breakdown and absorption of dietary carbohydrates. This helps moderate post-meal blood glucose elevation, allowing you to enjoy carb-rich meals with greater peace of mind.
Functional Food certified (E294)Supports Healthy Fat Metabolism
Chitosan, derived from crab shell, binds to dietary fats in the digestive tract, reducing fat absorption and supporting healthy blood triglyceride levels. FANCL's proprietary technology (Patent No. 5969680) enhances chitosan solubility for maximum bioavailability.
Patented absorption technologyDual Sugar & Fat Protection
Camellia Flower Saponin, extracted from tea flower buds, complements the other ingredients by further inhibiting both sugar and fat absorption through its unique surfactant properties. This creates comprehensive protection against excess nutrient absorption.
Triple-action formulaClinically Proven Results
Clinical studies have confirmed that this patented three-ingredient combination effectively suppresses post-meal blood sugar and blood triglyceride increases. The formula earned Functional Food certification (E294) from Japan's Consumer Affairs Agency.
Clinical trial completedThe Science
How It Works
Understanding the triple-action mechanism of Calorie Limit.
The Triple-Action Mechanism
Normally, sugars and fats from your meal are broken down by digestive enzymes and absorbed into your body. The three active ingredients in Calorie Limit interfere with this process at multiple points, reducing the amount of carbohydrates and fats that actually get absorbed.
Carbohydrate Blocking Process
The clinical trial showed significant reduction in blood sugar levels compared to placebo when taken before a rice-based meal.
Three Functional Ingredients
Chitosan (キトサン): Derived from crab shell, binds to fats and prevents absorption.
Mulberry Leaf Iminosugar (桑の葉イミノシュガー): Inhibits sugar-digesting enzymes.
The Science
Research & Evidence
Clinical evidence supporting Calorie Limit's effectiveness.
Clinical Study: Sugar Absorption—A clinical trial (Pharmacology & Therapeutics, 2019) demonstrated that Calorie Limit significantly suppressed post-meal blood sugar elevation in 40 healthy adults aged 20-65. Statistically significant reduction (P<0.05 to P<0.001) was observed over 120 minutes post-meal.
Clinical Study: Fat Absorption—The same research group demonstrated fat absorption suppression in 48 healthy adults. After consuming a fat-rich meal, the Calorie Limit group showed significantly lower triglyceride elevation compared to placebo over 6 hours (P<0.01 to P<0.001).
Consumer Validation: 92 Million Units Sold—The Calorie Limit series has achieved cumulative sales of 92 million units (2018-2024) and has been Japan's No.1 selling diet supplement for 8 consecutive years according to H&B Foods Marketing data.
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.
Patent Protection
Synergistic Combination Patent
Patent No. 6633173 covers the synergistic combination of mulberry leaf extract, chitosan, and tea flower extract for blocking sugar and fat absorption.
Japan Patent OfficeEnhanced Chitosan Technology
Patent No. 5969680 covers FANCL's proprietary technology that enhances chitosan solubility for improved bioavailability and effectiveness.
Japan Patent OfficeThe Story
About Brand Story
FANCL Corporation
Expanding into supplements in 1994, FANCL helped popularize the "supplement" concept in Japan and now holds top market share in functional food supplements. The company operates its own research institute and manufacturing facilities, ensuring quality from development through production. Now part of the Kirin Holdings group, FANCL continues its mission of "Honest Quality" across beauty and wellness.
Our Curation Process
Why We Selected This Product
Every product at Naturacare undergoes rigorous evaluation before joining our collection.
実証性
Evidence-Based
Calorie Limit is one of the few diet supplements with published clinical trial data in a peer-reviewed journal, demonstrating measurable effects on blood sugar and triglyceride levels.
信頼性
Market Trust
With 92 million units sold and 8 years as Japan's top diet supplement, Calorie Limit has earned exceptional consumer trust through consistent results and quality.
機能性
Functional Certification
Official Functional Food status (E294) means the health claims have been reviewed and accepted by Japan's Consumer Affairs Agency, providing regulatory assurance of the product's stated benefits.
Our Promise: We don't just import popular Japanese supplements - we investigate each product's formulation, manufacturing standards, and real-world reputation in Japan.
FANCL Calorie Limit earned its place in our collection because it represents the gold standard in evidence-based Japanese diet supplements - patented technology, clinical validation, and decades of consumer trust.
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 meal-time routine for optimal results.
Ideally take 10-15 minutes before eating. Can be taken up to 3 times daily (maximum 9 tablets per day).
Use before your largest or most carbohydrate/fat-heavy meal of the day for maximum benefit.
Tips for Best Results
- Take before your heaviest meal of the day for maximum benefit
- Swallow tablets whole with water - do not chew or crush
- Timing matters: take immediately before or with your meal, not after
- Consistency is key: use daily as part of your regular health routine
- Best results come from combining with balanced diet and regular exercise
- Store in a cool, dry place away from direct sunlight and humidity
What's Inside
Ingredients
Three functional ingredients with patented synergy.
Mulberry Leaf Iminosugar
Inhibits sugar-digesting enzymes in the intestine
Chitosan
Crab-derived fiber that binds to dietary fats
Camellia Flower Saponin
Tea flower extract that inhibits fat-digesting enzymes
Ingredients: Mulberry leaf extract powder (Mulberry leaf extract, Starch decomposition product) (Manufactured in Japan or China), Tea flower extract powder (Tea flower extract, Starch decomposition product), Starch, Edible scallop shell powder / Cellulose, Chitosan (derived from crab), Fine silicon dioxide, Hydroxypropyl cellulose, Calcium stearate, Shellac. --- This product contains Mulberry leaf iminosugar, Chitosan, and Tea flower saponin. This product has the function of suppressing the absorption of dietary sugar and fat, thereby suppressing the rise in blood sugar levels and blood triglyceride levels after meals. This product is suitable for those who tend to consume meals high in sugar and fat.
Allergen Information: Contains: Crab (crustacean shellfish). Free from: Dairy, eggs, wheat, soy, fish, peanuts, tree nuts, sesame. Note: Individuals with shellfish allergies should NOT use this product.
Important Information
Safety & Precautions
Please read before use.
Allergies
Not suitable for individuals with shellfish (crab) allergies. The chitosan in this product is derived from crab shell. If you have any food allergies, please check the ingredient list carefully.
Pregnancy & Nursing
Not suitable for pregnant women, nursing mothers, or children under 18 years of age. Consult your healthcare provider before use.
Medications
Consult your healthcare provider before use if taking medications for diabetes or blood lipid management. The product may affect blood sugar and triglyceride levels.
Dosage
Do not exceed the recommended daily serving of 9 tablets (3 servings). Consistent daily use provides the best results when combined with balanced diet and regular exercise.
Discontinue Use
Discontinue use and consult a physician if you experience any unusual symptoms or allergic reactions. May cause mild digestive changes such as increased gas or softer stools during initial use.
Disclaimer
This product is not intended to diagnose, treat, cure, or prevent any disease. Do not use as a substitute for balanced meals or as the sole method of weight management.
Storage
Store in a cool, dry place away from direct sunlight, high temperature, and humidity. Keep out of reach of children and pets.
Details
Product Specifications
Questions
Frequently Asked Questions
If you're on medication, consult your doctor first. Space fat-soluble vitamins 2-3 hours apart from Calorie Limit for best absorption.
Ideally take 10-15 minutes before eating. Can be taken up to 3 times daily (maximum 9 tablets per day). Use before your largest or most carbohydrate/fat-heavy meal of the day for maximum benefit.
Avoid taking it too early before eating or after you've finished your meal - timing with your meal is essential for optimal results.
Our team is happy to help with any questions about this product.
These effects typically subside with continued use. Start with one serving daily if you're concerned, and avoid use if you're allergic to shellfish, pregnant, or nursing.
Avoid taking it too early before eating or after you've finished your meal - timing with your meal is essential for optimal results.
These effects typically subside with continued use. Start with one serving daily if you're concerned, and avoid use if you're allergic to shellfish, pregnant, or nursing.
These effects typically subside with continued use. Start with one serving daily if you're concerned, and avoid use if you're allergic to shellfish, pregnant, or nursing.
These effects typically subside with continued use. Start with one serving daily if you're concerned, and avoid use if you're allergic to shellfish, pregnant, or nursing.