6 Signs Your Blood Is Moving Slower Than It Should
Most people explain every one of them away — and #4 gets dismissed as "just getting older."
Your blood doesn't slow down all at once — it sends warnings first, and here are the six most people ignore.
Sign 1Your hands and feet are cold when nothing else is
Cold feet in July. Fingers that need running under warm water while everyone else is fine. Your hands and feet are the last stop on your blood's delivery route — so they're the first place slower-moving blood shows up. Which is why nobody reports it to a doctor. It's socks in summer, an extra blanket, a joke about being "the cold one."
Sign 2Your legs go heavy or numb after sitting
You stand up after an hour at the desk, in the car, in your armchair — and your legs feel like they belong to someone else. Sitting folds your body's longest blood route at the hip and the knee, and blood that's moving thicker and slower struggles through those bends a little more each year. Most people blame the chair.
Sign 3The veins on your legs are getting easier to see
A road map appearing on your calves and ankles that you're sure wasn't there a few years ago. Veins return blood to the heart — uphill, against gravity — and when blood runs thicker, that return trip gets harder and the strain shows at the surface. Most people file it under cosmetics and cover up at the beach.
Sign 4You get winded on stairs you used to run up
The one everybody writes off as "just getting older." But stairs are a delivery test: your blood has to move oxygen to big muscles, fast. When it flows easily, stairs are boring. When it moves thicker and slower, the delivery lags — and your lungs try to make up the difference.
Sign 5Your legs and feet won't let you sleep
Restless legs at 11pm. Feet that need socks in bed. That crawling, can't-get-settled feeling that has you up at 2am. Night is when circulation gets no help — you're horizontal, still, and the muscles that squeeze blood along have clocked off. Blood that flows easily doesn't need the help. Blood that doesn't, does.
Sign 6Your doctor said "keep an eye on it" — and nothing else
The quiet one. A number at your last checkup that was a little higher than last time. Not high enough for medication. "Let's keep an eye on it." And then… nothing. No plan, no instructions, a follow-up in twelve months. If you've been living with that low hum of "watch it — watch it how?", you already know why it made this list.
Six different signs. One common thread: how easily your blood is moving.
Your blood carries a protein called fibrin — the mesh that forms a scab. You want it. But after roughly fifty, your body clears it more slowly than it builds it. Blood moves thicker and slower, and it shows up first in the places furthest from your heart: hands, feet, lower legs.
In Japan, they've eaten the answer for a thousand years — natto, a fermented soybean breakfast from the regions known for some of the longest-living people on earth. Natto contains an enzyme, nattokinase, that helps the body break fibrin down. In one customer's phrase: the plumber for your arteries.
The catch: natto is famously slimy and pungent — most Westerners can't get it down. That's why the enzyme goes in a capsule.
We didn't make this up. 1,062 people did.
A daily dose above the research — not a fraction of it.
The 20,000 FU question — before you buy a bigger number
You'll see bottles advertising 20,000 FU as "twice as strong." What they don't put on the label: no human study has ever tested 20,000 FU — not for results, not for long-term use. The landmark study ran twelve months at 10,800 FU; the highest daily dose reported without a safety signal is around 14,000 FU. Above that line there is no data — nobody knows what a year at 20,000 FU does, because nobody has ever checked.
And nattokinase isn't a vitamin you can harmlessly over-pour — it has genuine activity on how your blood behaves. That's the point of it, and it's why the warning on our label exists. Rejoin sits at 13,333 FU: above the benchmark the research validated, below the ceiling it has observed. The biggest number still standing on data.
How Rejoin compares to what's on the shelf
Three kinds of bottle. One that stands on data.
RejoinThe cheap bottles use a dose the research found did nothing. The 20,000 FU bottles use a dose the research has never tested. Rejoin is the biggest dose still standing on data.Comparison based on published label information across leading US nattokinase products, 2026.
Get Your Blood Moving Again — Pick Your Supply
The full 13,333 FU daily dose with all seven co-factors, backed by a 60-day guarantee.
- ✓13,333 FU daily
- ✓Seven heart co-factors
- ✓Third-party tested
- ✓60-day guarantee
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$1.00/day
2 bottles shipped together.
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4 bottles — shipped as one 240-capsule jar.
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8 bottles — shipped as two 240-capsule jars.
$79.94What customers notice
★★★★★ 4.4 out of 5 — from customers already taking this formula
Questions people ask before ordering
How long before I notice anything?
Longer than you'd like. Most people notice small changes between weeks three and six — usually warmth in the hands and feet first. Give it eight weeks, and take your baseline before you start so you have something honest to compare against.
Can I take this with blood thinners?
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.
What exactly is in it?
Nattokinase from fermented natto extract — 13,333 FU across the daily four-capsule serving — plus CoQ10, turmeric, aged garlic, grape seed, dandelion root, pine bark extract and bromelain. Contains soy. Vegetarian capsules, non-GMO, gluten-free.
Why FU and not mg?
FU (fibrinolytic units) measures enzyme activity, not weight. Two products both listing 100mg can differ five-fold in FU. Milligrams tell you how much powder went in. FU tells you what it's capable of.
Isn't 20,000 FU stronger? Some brands sell it.
Stronger on the label, unproven in the body. No human study has ever tested 20,000 FU — for results or long-term safety. Rejoin's 13,333 FU sits above the studied benchmark and below the observed ceiling — the most you can take while still standing on actual data.
Why four capsules instead of one?
Because 13,333 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.
Is this a substitute for my medication?
No. Rejoin supports healthy circulation — it does not treat or prevent any disease, and it never replaces anything your doctor has prescribed. If you're under care, show your doctor the label.
What if it doesn't work for me?
60-day money-back guarantee, no hoops — opened bottle included. Email us, keep the bottle.