✦ Free Shipping✦ Third-Party Lab Tested✦ Non-GMO Verified✦ Japanese-Origin Fermentation✦ OEM/Private Label Available✦ 60-Day Money Back Guarantee ✦ Free Shipping✦ Third-Party Lab Tested✦ Non-GMO Verified✦ Japanese-Origin Fermentation✦ OEM/Private Label Available✦ 60-Day Money Back Guarantee
Fermentation Science · Japanese Soy Heritage

Fermented the old way.
Packaged for your today.

We start with Japanese soybeans and native bacillus natto, let fermentation do its work, then lock the active extract into a simple softgel. No smell, no stickiness—just a quiet addition to your morning or evening routine.

Natto Source Nattokinase 8000FU softgel bottle
8000 FU / SOFTGEL
From a Single Soybean

What happens before it lands in your bottle

No shortcuts, no synthetic boosters. We keep the enzyme alive, strip out the things people don't like, and bottle the rest.

01 · Select

Non-GMO soybeans

We grade each batch by kernel size and protein content before anything touches the fermentation floor.

02 · Ferment

Bacillus natto fermentation

Native natto bacillus goes to work for 40+ hours in tightly controlled temperature and humidity. This is where the enzyme naturally forms.

03 · Extract

Cold-process extraction

Everything runs cold. Enzyme activity stays intact, and the pungent ammonia smell people associate with fresh natto gets pulled out.

04 · Encapsulate

Softgel sealing

The finished extract goes into a softgel shell. You get the benefit without having to acquire a taste for slimy, stringy fermented beans.

Product Positioning

What sets this softgel apart

Plenty of supplements compete on a number on the label. We compete on traceability, how it feels to take it, and whether it actually lasts in your routine.

01

Real fermented extract

No lab-made enzyme powders cut with fillers. Every batch traces back to an actual fermentation run. We keep the paper trail.

02

No smell. No slime.

If you've ever tried fresh natto and couldn't get past the ammonia bite or the stringy texture—this is the workaround you want.

03

Sticks in your routine

Small bottle, easy to pack. A single softgel fits into the same slot as your morning vitamins or your evening fish oil.

Choose Your Supply

Stock up and save

Regular use is where it counts. The 3-bottle pack is what most repeat customers land on after their first bottle.

Natto Source bottle

Starter · 1 Bottle

30 softgels · roughly a month's worth

$34 $52

~$1.13 / day

Add to Cart
Natto Source bottleNatto Source bottleNatto Source bottle

Buy 3 Get 2 Free · 5 Bottles

150 softgels · best value, roughly five months at 1 per day

$119 $260

~$0.79 / day

Add to Cart

🔒 Secure checkout · Free shipping on all orders · 60-day returns, no hoops to jump through

Natto Source Nattokinase 8000FU softgel bottle
Suggested Use

Works with the day you already have

01

1 or 2 softgels each day

Take it with a meal—breakfast or dinner both work. If your bottle label says a specific serving size, follow that instead.

02

Warm water is fine, boiling isn't

The softgel shell holds up fine to warm or room-temperature drinks. Save the boiling tea for ten minutes later.

03

Make it automatic

Stack it next to something you already do without thinking—right after brushing your teeth in the morning is a popular spot.

04

Ask a doctor first if you're in a special group

Pregnant or breastfeeding? On blood thinners? Surgery scheduled soon? Play it safe and check with your physician before starting.

Buying Guide

Potency isn't a race to the highest number

Some brands chase a bigger FU label because it looks impressive. The right fit is about origin, testing, and what your doctor agrees is sensible for you.

Natto Source · 8000FU Entry Brands · ~2000FU Very High-Dose · 10,000FU+
Raw Material Origin Japanese-sourced fermentation Origin often undisclosed Origin often undisclosed
Third-Party Testing ✓ Every batch Less common Less common
Format ✓ Odor-free softgel Varies by manufacturer Varies by manufacturer
60-Day Money-Back Less common Less common
Private Label / OEM

* A bigger number on the bottle doesn't automatically mean it's better for you. If you're on anticoagulants, have surgery coming up, or you're pregnant or breastfeeding, your doctor is the right person to ask about dose.

Building the Habit

Help it stick around

A supplement that sits in a drawer does nothing. Here's how most people weave it into their week without overthinking it.

Week 1-2

Anchor it to an existing habit

  • Sit the bottle next to your coffee maker or toothbrush
  • A phone reminder for the first week doesn't hurt
Week 3-4

It starts to feel automatic

  • By week four most people no longer need the reminder
  • Pair it with water before bed if morning didn't work out
  • Don't stress if you skip a day—just resume tomorrow
Week 5-8

Lock it in alongside everything else

  • At this point it's just part of the lineup with everything else you take
  • A quick note in your phone once a week about how you feel is plenty
Week 8+

Part of the long-game routine

  • Reorder before you run out—don't let the bottle go dry
  • Worth mentioning to your doctor at your next annual check-in
Quality & Manufacturing

Built for brand partners who want to scale

We do OEM and ODM work for established supplement brands and new launches alike. Formula, packaging design, potency specs—all negotiable.

Batch-by-batch testing

Potency, microbial limits, and heavy metals pulled and tested for every production run.

Dedicated softgel line

The encapsulation line runs in its own clean-room wing of the plant, separate from powder products.

Traceable raw materials

We keep supply chain docs on file for the soybeans, bacillus culture, and softgel shell inputs.

Your brand on the bottle

Custom labels, custom boxes, custom formula tweaks—bring your spec sheet and we'll quote it.

60-Day
Money Back
Guarantee

Try it. Don't like it? Send it back.

A full 60 days from when your order arrives. If it's not doing it for you, email us and we'll refund you. No forms, no quizzes, no drama.

Answers

Frequently asked questions

Who is this actually for?+
Most of our customers are middle-aged or older adults adding a fermented soy supplement to their daily lineup. That said, anyone over 18 can take it as long as they don't fall into one of the caution groups—pregnant, nursing, on blood thinners, or scheduled for surgery. Those groups should ask their doctor first.
Does this replace medication my doctor prescribed?+
No. It's a dietary supplement, full stop. It doesn't diagnose, treat, cure, or prevent anything. If you have an actual health concern, go see an actual doctor.
Should I just buy the highest FU I can find?+
Probably not. Higher FU on the label is mostly a marketing number unless it's matched to your actual needs. If you're on medication or have a chronic condition, your doctor is the right person to walk you through dose.
What's the smallest OEM order you'll do?+
It depends on the formula and packaging you want. New brand launches sometimes qualify for a smaller first run. Get in touch with your target quantities and we'll tell you if we can make it work.
How do I store it? Does it go in the fridge?+
Fridge isn't necessary. Just keep the bottle in a cabinet that stays cool and dry—no direct sun, no bathroom shelf above the shower, and definitely out of reach of kids.
What's the refund process actually look like?+
Email us within 60 days of delivery. Tell us you weren't happy and we'll send the refund back to your card. You don't need to ship the bottle back unless we specifically ask. Full details are in the Refund Policy at the bottom of the page.

Partner with us on your next supplement line

We walk brand partners through everything—raw material selection, formulation tweaks, packaging design, and finished-goods testing. You bring the brand, we handle the manufacturing side.

Get a Partnership Proposal