Two capsules a day for wider arteries, warmer hands and feet, lighter legs and energy that lasts past 3pm.
Clinically Shown To Boost Nitric Oxide 230% And Get Your Circulation Back
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Circulation & Energy
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Stimulant-Free
- Boosts Nitric Oxide 230% In Just 3 Hours
- Opens Arteries Up To 62% Wider For Better Blood Flow
- Lighter Legs, Warmer Hands & Feet, Steadier Energy
60-Day Money-Back Guarantee
Free UK Delivery
Barry M.
Four weeks in and the ankle swelling is genuinely down - I noticed when my socks stopped leaving a ring. I'd tried cheap arginine before and felt nothing, so I wasn't expecting much. Completely different product.
What's Inside?
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Four clinically-studied actives in a two-pronged formula: one half helps your body make more nitric oxide, the other half stops it being destroyed.
🔬 Nitrosigine® 500mg — inositol-stabilised arginine silicate
🌱 S7® 50mg — seven-plant blend shown to raise nitric oxide 230%
🍇 trans-Resveratrol 30mg — supports arterial flexibility
⚡ BioPerine® 5mg — black pepper extract for absorption
🚫 No caffeine, no stimulants, no artificial fillers
How To Take It?
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One simple daily habit. No powders, no mixing, no timing around workouts.
- Take 2 capsules once daily
- Same time each day for best results
Most people feel the first shift in energy within the first week, with circulation benefits building over 2–4 weeks of consistent use.
Who Is It For?
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From your twenties upward. Nitric oxide decline is usually framed as an ageing issue, and ageing is the biggest single driver — but it isn't the only one.
Desk work, broken sleep, stress and hard training all raise oxidative stress, and oxidative stress destroys nitric oxide at any age. Younger customers tend to notice the pump in the gym and the afternoon energy first. Older customers notice warmer hands and feet, lighter legs and less swelling. Same mechanism, different entry point.
Is It Safe With My Medication?
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BloodFlow-7® is a food supplement made in an audited facility to UK and EU standards, and it contains no stimulants.
That said, if you take blood pressure medication speak to your GP or pharmacist before starting. This is standard advice to prevent any further issues.
Shipping, Returns & Billing
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Delivery: Tracked UK delivery on every order, dispatched within 3 working days.
Returns: 60-day money-back guarantee. Email us within 60 days and we'll refund the product price. No forms, no interrogation.
Billing: One-time purchase. No subscription, no auto-renewal, and the price at checkout is the only price you'll ever be charged.
60-Day Money Back Guarantee
We're confident BloodFlow-7® will change how your circulation feels. Take it daily for 60 days — if you don't notice a difference in your energy, your legs or your hands and feet, email us and we'll refund the product price in full. Keep the bottle.
Zelva BloodFlow-7®
Free UK delivery by
Free UK delivery by
What Customers Are Saying
Ryan T.,
Verified Buyer
I'm 29, sit at a desk nine hours a day and my hands were always freezing. Bought this half expecting it to be for my dad's age group. Two weeks in my hands are warm, and the 3pm wall I used to hit just doesn't land the same way.
Paul K.,
Verified Buyer
I'd written off nitric oxide supplements. Took plain L-arginine for four months and felt absolutely nothing. The difference here is you can actually feel it working within the hour - warmth through the hands, and my legs don't feel like concrete on the stairs.
Denise W.,
Verified Buyer
On ramipril and checked with my pharmacist before starting, which I'd tell anyone to do. No issues at all alongside it. My energy is up and I'm walking the dog twice a day again instead of finding excuses. Wish I'd started sooner.
Margaret H.,
Verified Buyer
Three summers of puffy ankles by the evening and shoes that stopped fitting after lunch. I'm four weeks in and the swelling is genuinely down - I noticed it first when my socks stopped leaving a ring. I didn't expect a capsule to do that.
The Numbers Speak For Themselves
What the research on the branded actives in BloodFlow-7® actually shows.
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More Nitric Oxide, In 3 Hours
The S7® blend raises circulating nitric oxide by 230% within three hours — the full studied dose is in every serving.
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Wider Artery Opening
Wider vessels, lower resistance, more oxygen reaching your legs, hands, heart and brain.
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Better Absorbed Than Arginine
Nitrosigine® arrives intact where ordinary L-arginine is destroyed in the gut. It's why this works when cheap arginine didn't.
The Science Behind It
A Nobel Prize, And What It Means For You
In 1998 the Nobel Prize in Physiology or Medicine went to Furchgott, Ignarro and Murad for a discovery that rewrote cardiovascular science: nitric oxide is the signal your body uses to tell your arteries to open.
Every heartbeat depends on it. It relaxes the muscle in your vessel walls so blood, oxygen and nutrients move freely to your legs, your hands, your heart and your brain.
And plenty of ordinary life suppresses it. Ageing, yes — but also sitting still for eight hours, broken sleep, chronic stress and hard training. All of them raise oxidative stress, and free radicals destroy nitric oxide within seconds of it being made.
That's the cascade behind cold hands, heavy legs, puffy ankles and the energy that just isn't there.
How BloodFlow-7® Delivers These Results
Nitric oxide is the signal, not the fuel
It's the molecule that tells the smooth muscle in your artery walls to relax. Vessels widen, resistance drops, and blood carrying oxygen and nutrients reaches everywhere it's meant to.
Two things suppress it — and neither is your fault
Your body makes less of it as you get older. But sitting still for hours, broken sleep, stress and hard training all raise oxidative stress, and free radicals destroy nitric oxide within seconds of it being made.
Most supplements only solve half of it
They hand your body more raw material and hope for the best. If the nitric oxide you produce is being scavenged before it reaches your arteries, more substrate changes nothing. That's the honest reason so many people take arginine for months and feel absolutely nothing.
BloodFlow-7® works on both ends
Nitrosigine® supplies arginine in a form that survives your gut instead of being broken down in it. S7® works upstream, cutting the oxidative stress that destroys nitric oxide before it can act. Supply and protection, in one capsule.
The Pathways Explained
Four actives, each at a dose that does something. Tap through to see what each one is for.
Nitrosigine® — 500mg
The substrate. Plain L-arginine is broken down by arginase in your gut and liver before it ever reaches your bloodstream — which is why cheap arginine tablets so often do nothing at all. Nitrosigine® bonds arginine to inositol and silicate so it survives that journey intact and arrives where your body can actually use it. Absorbed 5X better than standard arginine, active within about 30 minutes, and it keeps working for hours rather than minutes.
What it does
- Survives digestion instead of being destroyed by it
- Absorbed 5X better than ordinary L-arginine
- Works within 30 minutes of your first dose
- Silicate portion supports arterial flexibility
S7® — 50mg
The protector — S7® doesn't donate nitric oxide at all. It works upstream by cutting reactive oxygen species so the nitric oxide your body already makes isn't scavenged by free radicals before it reaches your arteries. Seven plants: green coffee bean, green tea leaf, turmeric root, blueberry, broccoli, tart cherry and kale. Research on this blend shows a 230% rise in circulating nitric oxide within three hours.
What it does
- Raises nitric oxide 230% in 3 hours
- Seven concentrated plant extracts
- Protects the nitric oxide you already produce
- Included at the full dose used in the research
trans-Resveratrol — 30mg
The polyphenol found in red grape skin, associated in research with healthier endothelial function — the endothelium being the thin inner lining of your blood vessels that produces nitric oxide in the first place. It supports the machinery rather than the raw material. Notoriously badly absorbed on its own, which is exactly why the fourth ingredient is in this formula.
What it does
- Supports the vessel lining that makes nitric oxide
- Linked to arterial flexibility in research
- The active compound behind the red wine story
- Paired with BioPerine® for absorption
BioPerine® — 5mg
Concentrated black pepper extract, it slows the metabolic enzymes that would otherwise clear the other actives from your system, so more of what you paid for ends up in circulation rather than being processed and discarded. A small dose doing a specific job — nothing in this bottle is here purely for the label.
What it does
- Increases absorption of the other three actives
- Standardised black pepper extract
- Specifically rescues resveratrol's poor absorption
- No stimulant effect
What To Expect
The general pattern people describe over their first two months.
Week 1–2 · Circulation Support
Nitrosigine® reaches your bloodstream within about 30 minutes and S7® lifts nitric oxide up to 230% inside three hours. What most people notice first is warmth returning to cold hands and feet, and the afternoon energy dip disappearing.
Week 3–4 · The Change You Feel
This is where the results people actually talk about show up. Legs feel lighter after long days on your feet, less swelling around the ankles, stamina holds up further into the day, and focus feels sharper.
Week 5–8 · Settled In
With daily use the benefits stop being something you notice and become simply how you feel. Steadier energy, warmer extremities, easier movement.
The Exact Formula
2 nitric oxide actives. 1 vascular support. 1 absorption enhancer. Every milligram on the label.
Nitrosigine® — 500mg
Arginine bonded to inositol and silicate so it survives digestion. Absorbed 5X better than ordinary arginine.
S7® — 50mg
Seven plants shown to raise nitric oxide 230% in 3 hours by stopping free radicals destroying it.
trans-Resveratrol — 30mg
The red grape polyphenol linked to artery flexibility and healthier endothelial function.
BioPerine® — 5mg
Black pepper extract that sharply increases how much of the formula your body actually absorbs.
Real Difference.
If you've tried a nitric oxide supplement before and felt nothing, this is why.
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BloodFlow-7®
By Zelva
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Others
Arginine or beetroot
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How it works
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Makes AND protects Nitric Oxide | Raw ingredients only |
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Absorption
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Survives digestion | Broken down in gut |
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Time to effect
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Within 3 hours | Often nothing |
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Stimulants
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None | Often caffeine |
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Format
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Easy to use capsules | Powders and mixing |
Why Men Keep Coming Back
FAQs
How soon will I feel a difference?
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Nitrosigine® begins raising nitric oxide within about 30 minutes of your first dose, and the S7® blend has been shown to lift nitric oxide levels 230% within 3 hours.
What that feels like varies. Some people notice warmer hands and a lift in energy on day one. As well as lighter legs, less swelling in the ankles, steadier stamina through the afternoon — build over the first 2 to 4 weeks of daily use. Take it every day and judge it at week four, not day four.
What makes BloodFlow-7® different from other nitric oxide supplements?
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Almost every other product on the shelf does one thing: give your body more raw material. That's only half the problem.
Your body doesn't just make less nitric oxide over time — free radicals destroy more of what you do make, often within seconds. BloodFlow-7® is built around both halves. Nitrosigine® supplies arginine in a form that survives digestion instead of being broken down in the gut. S7® works upstream, cutting the oxidative stress that scavenges nitric oxide before it can reach your arteries.
Supply plus protection. That's the difference, and it's why people who felt nothing from ordinary arginine often feel something here.
I'm in my twenties or thirties — is this for me?
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Yes. Nitric oxide decline is usually framed as an ageing problem, and ageing is the biggest single driver — but it isn't the only one.
Sitting still for eight hours a day, poor sleep, chronic stress and hard training all raise oxidative stress, and oxidative stress destroys nitric oxide regardless of how old you are. If you have cold hands at a desk, legs that feel heavy after a long day, or an afternoon crash you're papering over with coffee, that's the same mechanism.
Why not just buy cheap L-arginine instead?
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Because most of it never arrives. Plain L-arginine is broken down by arginase in your gut and liver before it reaches your bloodstream, which is why so many people take it for months and feel absolutely nothing.
Nitrosigine® bonds arginine to inositol and silicate so it survives that journey. Roughly 5X the absorption, and active for hours rather than minutes. You're not paying for more arginine — you're paying for arginine that actually gets there.
Is this safe to take long-term?
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Yes — BloodFlow-7® is designed as a daily supplement and every ingredient is a well-characterised, clinically-studied compound with no known dependency or tolerance effect. There is no caffeine and no stimulant, so it won't disturb your sleep or raise your heart rate.
Can I take it alongside my other supplements?
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Yes. BloodFlow-7® pairs well with a daily multivitamin, omega-3, vitamin D, magnesium and CoQ10 — nothing in the formula competes with them.
Avoid stacking it with a second nitric oxide product (beetroot shots, citrulline powders, other NO boosters) on the same day. There's no danger, but there's no added benefit either.
How do I take it?
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As simple as it gets:
- Take 2 capsules once daily
- With or without food, with a glass of water
- Same time each morning works best
- Keep going daily — the benefits compound
No powders, no mixing, no cycling on and off.
Are there any side effects?
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BloodFlow-7® is well tolerated. The most common report is a mild headache or a warm flush in the first few days — that's your vessels dilating, and it usually settles within a week. Taking the capsules with food helps.
If you take blood pressure medication, nitrates, blood thinners or ED medication, or you're pregnant or breastfeeding, speak to your GP or pharmacist before starting.
Will I be signed up to a subscription?
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No. Every price on this page is a one-time purchase. There is no auto-renewal, no hidden recurring charge, and the price you see at checkout is the only price you will ever be charged.
If you want more, you can order more. That's it.
Can I return it if it doesn't work for me?
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Yes. 60-day money-back guarantee, and we mean it.
If BloodFlow-7® hasn't done what you hoped, email us within 60 days of delivery and we'll refund the product price. No forms to fill in and no argument.
When will my order arrive?
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Tracked delivery on every order, typically dispatched within 2–3 working days.
You'll get tracking by email as soon as it leaves us.
Start Today
Take them every day for 60 days and watch what changes. If nothing does, email us with your order number and we'll refund the product price. No forms, no phone call, no retention offer, and nothing to send back.
Get Mine
Free UK delivery
No subscription
60-day guarantee
Start Today
Take them every day for 60 days and watch what changes. If nothing does, email us with your order number and we'll refund the product price. No forms, no phone call, no retention offer, and nothing to send back.
Get Mine
Free UK delivery
No subscription
60-day guarantee