The clinical-dose Japanese enzyme with seven heart co-factors — an 80-day supply
Why Are Your Feet Cold In July?
It isn't the weather and it isn't simply age. It's how easily your blood is still moving — and there's a reason Japan has spent a thousand years eating the thing that helps it.
Warmth in your hands and feet, usually by week six
The 10,000 FU dose the research used, not the usual 2,000
Seven co-factors in the bottle, not enzyme and filler
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Your bloodwork came back fine. So why are your feet still cold?
Cold hands. Legs that go dead after an hour at your desk. Stairs you used to take two at a time. Everything furthest from your heart, first.
Your feet are cold in the middle of summer
Your legs go numb before the meeting ends
Your hands ache the moment weather turns
You were told to watch it, and given no plan
Your bloodwork came back fine. So why are your feet still cold?
Cold hands. Legs that go dead after an hour at your desk. Stairs you used to take two at a time. Everything furthest from your heart, first.
Your feet are cold in the middle of summer
Your legs go numb before the meeting ends
Your hands ache the moment weather turns
You were told to watch it, and given no plan
We Didn't Make This Up. 1,062 People Did.
Cold extremities are the visible end of a circulation problem. Here is what the largest study on this enzyme found at the other end of it.
We Didn't Make This Up. 1,062 People Did.
Cold extremities are the visible end of a circulation problem. Here is what the largest study on this enzyme found at the other end of it.
1,062
Adults taking it daily for a whole year
36%
Carotid plaque reduction, high-dose arm
10,800 FU
The daily dose the researchers used
These figures describe nattokinase as an ingredient and come from published research on the enzyme. They are not claims about Rejoin, and individual results vary.
One capsule. Seven things your circulation has been asking for.
Cold feet are a flow problem. Every ingredient here works on flow.
One capsule. Seven things your circulation has been asking for.
Cold feet are a flow problem. Every ingredient here works on flow.
The enzyme that thins the mesh
Fibrin is the protein mesh that makes blood sticky — the same mesh that turns a cut into a scab. After fifty your body clears it more slowly, blood moves thicker, and the places furthest from your heart feel it first. That's your feet.
CoQ10 for the pump behind it all
Blood only reaches your toes because something pushes it there a hundred thousand times a day. CoQ10 supports the cellular energy that muscle runs on — and it is the first thing a statin depletes on its way through your system.
Turmeric and aged garlic together
Two of the most-studied circulatory botanicals on earth, in the same capsule rather than sold as two more bottles. Most nattokinase products leave both out entirely and let the enzyme carry the whole formula on its own.
Grape seed, pine bark, dandelion, bromelain
The vessels in your hands and feet are the narrowest in your body and the first to struggle. These four support the small-vessel end of circulation — the exact end where cold fingers and dead legs are actually happening.
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Rejoin Nattokinase 10,000 FU Complex
- 10,000 FU per serving — the studied dose
- Seven co-factors, zero filler-as-active
- Third-party tested, made in the USA, CGMP
Fermented in small batches. Batch 4 is open.
June 27th
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July 26th
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August 23rd
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Batch 4 price — $29.90This batch only. Batch 5 is $39.90.
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FREEFree US shipping
FREEKnow Your Numbers — 90-day circulation log
Batch 5 — ships October 7th
$29.90 $39.90 · 4 weeks later
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Why Rejoin?
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🇯🇵 The dose the research used. Most bottles ship 2,000 FU a serving. The research ran at 10,800 FU a day and found nothing measurable in the low-dose arms. Ours is 10,000 FU.
🧬 Seven co-factors, not fillers. CoQ10, turmeric, aged garlic, grape seed, dandelion, pine bark, bromelain. Read a rival's panel closely and you often find cellulose where actives should be.
🔬 Third-party tested for potency. Independent testing has found most nattokinase supplements miss the FU printed on their label. Ours is verified, because that number is the whole argument.
📅 Eighty days in a bottle, not thirty. Two hundred and forty capsules at three a day is just under three months — long enough to actually run the eight weeks the research needs.
Ingredients & Allergies
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The enzyme
Nattokinase from fermented natto extract — 10,000 FU per three-capsule serving
The heart co-factors
CoQ10 (ubiquinone) · Turmeric · Aged garlic · Grape seed · Dandelion root · Pine bark extract · Bromelain
Allergens
Contains soy — nattokinase is produced by fermenting soybeans. Vegetarian capsules. Non-GMO. Gluten-free.
⚠️ Do not take Rejoin if you
Take blood thinners, anticoagulants or antiplatelet medication including warfarin, Eliquis, Xarelto, Plavix or daily aspirin · Have a bleeding or clotting disorder · Have surgery or a dental procedure within two weeks · Are pregnant or nursing · Are under 18
Talk to your doctor before starting. Rejoin is not a replacement for prescribed medication.
Directions
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Daily — Three capsules once a day with any meal. Consistency matters more than timing.
Starting out — Two capsules for the first three days, then move up to three.
Timing — Many people take it in the evening, a few hours after dinner. Any consistent time works.
How long — Give it eight weeks before you judge it. The research ran twelve months.
How it Works
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The plumbing, plainly.
Your blood carries a protein called fibrin. Fibrin is useful — it's the mesh that forms a scab and stops a cut bleeding. Your body builds it and clears it constantly, and for most of your life the two stay in balance.
After roughly fifty, the clearing slows. Fibrin accumulates faster than it's removed, blood moves thicker and slower, and it shows up first in the places furthest from your heart: hands, feet, lower legs.
Where the enzyme comes in.
Natto is a fermented soybean dish Japan has eaten for over a thousand years. In the late 1980s researchers isolated its most abundant enzyme and named it nattokinase. What it does is break fibrin down — it is, in one customer's phrase, the plumber for your arteries.
Why it isn't measured in milligrams.
It's measured in fibrinolytic units, or FU — how much fibrin-breaking activity you're actually getting. Two bottles both listing 100mg can differ five-fold in FU. Milligrams tell you how much powder is in the capsule. FU tells you what that powder does.
Why the dose is the whole argument.
In the twelve-month study of 1,062 adults, the 10,800 FU group showed measurable change and the lower-dose groups did not. That single finding is why this category argues about one number — and why a bottle shipping 2,000 FU is shipping an amount the research found did nothing.
They'd tried the cheap bottle first. Then they read the label properly.
4.4 out of 5 from customers already taking this formula
Cold Fingers, Gone Quiet
"I've had secondary Raynaud's in one finger for years — in winter it would go white and I'd lose all feeling. I started taking these in the morning before food, and about a month in I realised I'd stopped noticing it. Almost unnoticeable most days now."
The Bloodwork Surprise
"I'm not someone who tracks much, but I had bloodwork done forty days in and my LDL had actually come down. My doctor changed nothing else, so I don't know what else it would be. I also feel sharper in the afternoons. I'll be ordering again."
I Bought The Cheap One First
"I bought a 4,000 FU bottle because it cost less, took it two months and felt nothing at all. Then I read the study and realised the dose they used was more than double mine. Switched to the 10,000 and the numbness in my legs stopped being a daily thing."
The Corridor Walk
"I sit nine hours a day and by mid-afternoon my legs would go completely dead — I'd have to walk the corridor just to get feeling back. Six weeks in I noticed I'd stopped. I didn't notice it stopping. I noticed I'd forgotten to do it."
Dad Was Fifty-Eight
"My father had his first heart attack at fifty-eight and I turned fifty-six this year. My doctor keeps saying keep an eye on it, which isn't a plan. This is the first thing I've taken where I could read the study behind the dose on the label."
I Throw Most Of Them Out
"I've bought a lot of supplements over the years and thrown most of them out after a month. I bought this expecting the same. I'm three months in and I've reordered twice, which I don't do. I can genuinely tell the difference with this one."
Four Bottles Down To One
"I was already buying CoQ10 and turmeric separately and thinking about adding garlic. Then I read this label and all three were in it, plus the enzyme I came for. Four bottles down to one, for less than I was spending before."
My Wife Noticed First
"My feet have been cold since my forties — in bed, in summer, didn't matter. My wife will confirm it, she's the one who put up with them. Seven weeks in she pointed out they weren't cold anymore. I hadn't noticed. She had."
What the first eighty days actually look like
The honest version: this is not a supplement you feel in an hour.
Week 1–2
Nothing
You'll feel nothing at all, and that's exactly right. This isn't a stimulant. Take your baseline now — blood pressure, and how your legs feel at four in the afternoon — so you've something to compare to.
Week 3–6
The small things
This is where most people notice it first, and it's rarely dramatic. Warmer hands. Legs that don't go dead through a long meeting. Stairs feeling slightly less like an event than a month ago.
Week 8
The mark that matters
Eight weeks is where the published research began recording measurable change. If you're going to judge whether this works for you, judge it here rather than somewhere back in week three.
Month 3 on
Why people stay
The study ran a full twelve months and nobody takes this for a fortnight. People stay on it because they'd rather do something about a warning than sit and watch it, which was the alternative.
Seven co-factors. Zero filler dressed as an active.
Every one earns its place
Nattokinase 10,000 FU
Breaks fibrin down
CoQ10
Cellular energy for the heart muscle
Turmeric
Everyday antioxidant support here
Aged Garlic
Traditional heart-health support
Grape Seed & Pine Bark
Circulatory support
Dandelion & Bromelain
Fluid and enzyme support
Nattokinase 10,000 FU
Breaks fibrin down
CoQ10
Cellular energy for the heart muscle
Turmeric
Everyday antioxidant support here
Aged Garlic
Traditional heart-health support
Grape Seed & Pine Bark
Circulatory support
Dandelion & Bromelain
Fluid and enzyme support
Why people switch to Rejoinand stop buying four bottles
Most people arrive here having already tried a 2,000 FU bottle that did nothing.
Why people switch to Rejoinand stop buying four bottles
Most people arrive here having already tried a 2,000 FU bottle that did nothing.
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Rejoin
Nattokinase 10,000 FU Complex
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Typical Nattokinase
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|---|---|---|
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10,000 FU per serving
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10,000 FU | Usually 2,000 |
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Matches the researched dose
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Heart co-factors included
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Seven | Usually none |
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FU stated plainly per serving
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Yes | Often "per gram" |
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Third-party tested for potency
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Yes | Rarely |
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Supply in one bottle
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80 days | 30 days |
Thirty Days To Feel Nothing At All
We'll be straight with you: thirty days isn't long enough to judge this. The research ran twelve months, and the first things people notice tend to land between weeks three and six. So the guarantee isn't really about thirty days. It's about you not having to gamble to find out. If you decide it isn't for you, send it back and we'll refund every penny — opened bottle included.
Start My 80 Days
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Thirty Days To Feel Nothing At All
We'll be straight with you: thirty days isn't long enough to judge this. The research ran twelve months, and the first things people notice tend to land between weeks three and six. So the guarantee isn't really about thirty days. It's about you not having to gamble to find out. If you decide it isn't for you, send it back and we'll refund every penny — opened bottle included.
Start My 80 Days
Third-Party Tested
Free US Shipping
Cancel Anytime
FAQs.
How long before I notice anything?
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Longer than you'd like. Most people notice small changes between weeks three and six, usually warmth in the hands and feet before anything else. Give it eight weeks, and take your baseline numbers before you start so you've something honest to compare against.
These are regular capsules, not enteric-coated. Does stomach acid destroy the enzyme?
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Fair question, and the honest answer is that enteric coating does help. Our answer is dose: at 10,000 FU a serving, substantially more enzyme arrives than from a coated 2,000 FU capsule. Take it with a meal rather than empty, and it does better still.
Why does the bottle carry a California cancer warning?
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Because California requires that label on most botanical supplements — turmeric, garlic and grape seed included — when trace naturally-occurring elements exceed a threshold far below any level of concern. Nearly every herbal supplement sold there carries it. It's a labelling law.
Can I take this with my blood pressure medication?
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Ask your doctor first. Nattokinase has genuine anticoagulant activity — that's the entire point of it — so it needs discussing with whoever manages your prescriptions. This isn't caution for its own sake. It matters more than the dose does.
I'm on a blood thinner. Can I take it?
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Not without your doctor's approval. Warfarin, Eliquis, Xarelto, Plavix and daily aspirin all count, as does a bleeding disorder or surgery within the next fortnight. We'd rather lose the sale than have you skip that conversation, so please have it first.
Why three capsules instead of one?
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Because 10,000 FU of real enzyme activity doesn't physically fit in one capsule alongside seven co-factors. A single-capsule product at this claimed dose is either not delivering the dose or not delivering the co-factors. Three is what an honest version takes.
What does FU mean, and why not milligrams?
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FU stands for fibrinolytic units and measures enzyme activity rather than weight. Two products both listing 100mg can differ five-fold in what they actually do. Milligrams tell you how much powder went in. FU tells you what it's capable of.