
4.8 ★ Customer Rating • Japanese Formula • Third Party Tested • Enteric Coated •
4.8 ★ Customer Rating • Japanese Formula • Third Party Tested • Enteric Coated •
4.8 ★ Customer Rating • Japanese Formula • Third Party Tested • Enteric Coated •
4.8 ★ Customer Rating • Japanese Formula • Third Party Tested • Enteric Coated •
4.8 ★ Customer Rating • Japanese Formula • Third Party Tested • Enteric Coated •
4.8 ★ Customer Rating • Japanese Formula • Third Party Tested • Enteric Coated •
4.8 ★ Customer Rating • Japanese Formula • Third Party Tested • Enteric Coated •
4.8 ★ Customer Rating • Japanese Formula • Third Party Tested • Enteric Coated •
4.8 ★ Customer Rating • Japanese Formula • Third Party Tested • Enteric Coated •
4.8 ★ Customer Rating • Japanese Formula • Third Party Tested • Enteric Coated •
4.8 ★ Customer Rating • Japanese Formula • Third Party Tested • Enteric Coated •
4.8 ★ Customer Rating • Japanese Formula • Third Party Tested • Enteric Coated •
4.8 ★ Customer Rating • Japanese Formula • Third Party Tested • Enteric Coated •
4.8 ★ Customer Rating • Japanese Formula • Third Party Tested • Enteric Coated •
4.8 ★ Customer Rating • Japanese Formula • Third Party Tested • Enteric Coated •
4.8 ★ Customer Rating • Japanese Formula • Third Party Tested • Enteric Coated •
Over 10,000 Customers
Supporting Their Circulation Naturally
Real people. Real results. Backed by Japanese tradition and modern science.
5 Clinically Studied Benefits of Japanese Nattokinase
Japanese Nattokinase 4,000 FU
Slow fermented nattokinase delivering 4,000 Fibrinolytic Units per serving, enteric coated for maximum absorption.
Tinnitus & Ear Health Support
Poor blood flow is the #1 driver of tinnitus. Nattokinase supports circulation to the inner ear to help reduce ringing and discomfort.
The Japanese Blood Flow Enzyme
Nattokinase dissolves excess fibrin in the blood, restoring circulation to your heart, brain, and inner ear. Discovered in 1980 by Dr. Hiroyuki Sumi.
Supports Vein & Leg Health
Nattokinase dissolves excess fibrin in the veins, helping reduce swelling, heaviness, and discomfort associated with poor leg circulation.
Clean & Tested Quality
Every batch is third-party lab tested for purity and potency. Non GMO, gluten free, enteric coated. No unnecessary additives.
Noticed improved circulation and blood flow support
Feeling better cardiovascular wellness within weeks*
Said they would continue using Kyoséi daily
As part of their long term wellness routine
Said they were satisfied with product quality
And would recommend it to others*
Reported improvements in energy and vitality
Feeling better day to day with consistent use*
Clinically Studied Japanese Nattokinase
Kyoséi Japanese Nattokinase helps support healthy blood flow, circulation, and whole body wellness.
Try Risk Free TodayUnlike regular nattokinase supplements,
Kyoséi supports your circulation & whole body naturally
Formulated with authentic Japanese nattokinase to help support healthy blood flow, cardiovascular wellness, and whole body vitality.
Rooted in Japanese Tradition.
Nattokinase has been consumed in Japan for over 1,000 years, derived from natto, a fermented soybean food long associated with longevity and cardiovascular health.
Maximum Absorption.
Our enteric coated softgel bypasses stomach acid, delivering 4,000 FU of active nattokinase directly into the bloodstream where it works best.
Supports Your Whole System.
By promoting healthy blood flow throughout the body, nattokinase supports not just your heart, but your brain, joints, and overall vitality.
Feel Better. Every Day.
From consistent circulation support to easy daily use, here's what makes Kyoséi® Japanese Nattokinase different.
Heart & Circulation Support
4,000 FU Maximum Potency
Enteric Coated for Absorption
Third Party Lab Tested
Proven Benefits. Backed by Science.
Your body deserves more than empty claims. Kyoséi® Japanese Nattokinase supports key areas of daily wellness using ingredients that are studied and trusted.
Circulation Support
See the Difference in Your Flow
Customers commonly report noticeable improvements in circulation and energy with consistent daily use of Kyoséi Japanese Nattokinase.
Without Support
Poor Flow
RestrictedAfter 8 Weeks
Improved
Healthy RangeYour Journey with Kyoséi
What customers typically experience over time with consistent daily use.
Weeks 1 to 2
Easy Start
Weeks 3 to 4
Daily Balance
Weeks 5 to 8
Heart & Circulation Support
Week 8+
Long Term Wellness
Discover Why Experts Trust Japanese Nattokinase
Kyoséi: Simple Daily Blood Flow Support
Nattokinase has been valued for centuries as part of Japanese wellness traditions. Kyoséi® Japanese Nattokinase offers a simple, odorless way to include this time-tested enzyme in your daily routine. Each softgel delivers 4,000 FU of active nattokinase, carefully formulated for daily use.
One Powerful Enzyme
Many supplements rely on complex blends. We keep it focused. Pure Japanese nattokinase at 4,000 FU per serving. Enteric coated to bypass stomach acid and deliver maximum potency directly into the bloodstream.
Research & Tradition
Nattokinase has been the subject of over 17 published studies examining its role in supporting healthy circulation and cardiovascular function. Kyoséi® delivers a consistent daily serving in a convenient softgel format. Designed for long term wellness, not quick fixes. Backed by our 30 day money back guarantee.
Money Back Guarantee!
Try Kyoséi completely risk free for 30 days. If you are not 100% satisfied with your results, we will refund every penny, no questions asked. We stand behind our premium Japanese Nattokinase because we know it works.
Try Risk Free TodayKyoséi® vs. Other Brands
We are serious about clean health, ask away
Transparency matters when it comes to daily supplements. Below you will find answers to the most common questions about our Japanese Nattokinase, how it works, what to expect, and how we ensure quality, purity, and consistency in every softgel.
Nattokinase works differently from most circulation supplements. Rather than relying on vitamins or herbs, it is a fibrinolytic enzyme that actively dissolves excess fibrin in the blood, which is the protein responsible for poor circulation and sluggish blood flow.
Most standard nattokinase supplements are destroyed by stomach acid before they reach the bloodstream. Kyoséi uses an enteric coated softgel that bypasses the stomach entirely, delivering the full 4,000 FU dose directly where it is needed. This is why so many customers who have tried other products notice a difference with ours.
Most customers begin noticing improvements in energy and circulation within 2 to 4 weeks, with more noticeable changes by 6 to 8 weeks. Nattokinase works gradually as it helps maintain healthy blood viscosity over time.
We recommend taking consistently for at least 8 weeks for best results. Results vary by individual. Always consult your doctor before making any changes if you are on medications.
Most nattokinase supplements use standard capsules that are largely destroyed by stomach acid, meaning a significant portion of the enzyme never reaches the bloodstream. Our enteric coated softgel bypasses the stomach and releases the full 4,000 FU dose in the small intestine where absorption is optimal.
At 4,000 FU per serving, Kyoséi also delivers double the potency of most standard nattokinase products on the market, which typically offer only 2,000 FU.
Many customers take Kyoséi alongside their existing routine without issues, but you should always consult your doctor first, especially if you are on blood thinners or anticoagulant medications. Nattokinase has fibrinolytic properties and your healthcare provider should be aware before you add it to your regimen.
Never stop or change any prescription medications without your doctor's approval.
We offer a 30 day money back guarantee because we are confident in Kyoséi Japanese Nattokinase. If you do not notice any improvements within 30 days, simply contact us for a full refund. No questions asked, no hassle.
We stand behind every bottle we sell. Your satisfaction is our priority and we will never make you jump through hoops to get your money back.