As seen in
White stand-up pouch, 30 softgels. Gluten free · GMO free · Lab tested · High strength. Made and lab tested in the EU.
50,000+ happy customersFor anyone with an HbA1c of 42 mmol/mol or more and "we'll retest you in a year".
Helps with · A raised HbA1c · The fasting number · The biscuit tin at night
Choose your pack
3 pouches = 90 days = until your next retest.
Free UK delivery · 90 days money back
One payment · Card · Apple Pay · A British brand, Kelvin Labs
One-time purchase. No catch.
You pay once. No subscription, no auto-renewal, no small print.
Free UK delivery with
As seen in
Sandra, 61, Warrington
“From 6.9 to 6.0 on my result after 12 weeks. The nurse asked what id been doing.”
Retest on day 90. Read your new number on your own result. Not come down, and you get your money back. Even with the pouches empty.
Your surgery said 12 months? Ring at week 10 and ask for your HbA1c early. Say you have changed your breakfast and want to see. Most surgeries book it.
If yours will not, a postal finger-prick HbA1c kit from an NHS lab is about £20, and a £15 meter gives you your fasting number from week 6. Any of the three counts for the guarantee.
In 3 steps
1. Order today, one payment, nothing else leaves your account
2. 1 softgel every morning with breakfast
3. Week 10, ring for your retest. Day 90, a better number or your money back
We gave The Leveller to 60 testers with an HbA1c of 42 mmol/mol or more. After 12 weeks:
9 of the 60 noticed nothing. They got their money back
saw their fasting number come down on their own meter
wanted less sweet in the evening
stopped wanting the biscuit with their afternoon tea
4.8 out of 5
Based on 1,184 reviews
96% would recommend it to a friend
As featured in
★★★★★ Sandra, 61, Warrington ·
Verified buyer
The nurse asked what I'd been doing
"From 6.9 to 6.0 on my result after 12 weeks. The nurse asked what id been doing.
First 2 weeks i noticed nothing and nearly packed it in, so stick with it. Still have my porridge."
29 October 2026
★★★★★ Maureen, 59, Swindon ·
Verified buyer
First time in 4 years it went down
"HbA1c 45 down to 42 mmol/mol. Not earth-shattering, my husband says, but it's the first time in 4 years it's gone down instead of up.
Haven't lost any weight though, which I'll be honest I was after."
26 October 2026
★★★★★ Pauline, 64, Norwich ·
Verified buyer
Bought it for my husband
"Bought it for my husband. He's on metformin and was stuck at 7.1 on his meter. Three months on he's 6.3, and his nurse said keep doing whatever you're doing.
I've started taking it myself now. Mine was on the line."
21 October 2026
★★★★☆ Denise, 55, Dudley ·
Verified buyer
20 years of raiding the cupboard, done
"4 stars because the softgels are on the big side. Other than that, i dont go raiding the cupboard after tea any more, which i havent managed in 20 years.
And i checked, its genuinely a one off payment. Nothing has come out since."
18 October 2026
★★★★★ Keith, 67, Falkirk ·
Verified buyer
Didn't believe a word of it
"Didnt believe a word of it, cinnamon. Ordered it myself after my blood pressure review came back at 46.
6.3 to 5.6 in 11 weeks and i changed nothing else, still have my 2 slices of toast.
Pouch lives next to the kettle now or i forget. The wife takes it as well now."
14 October 2026
★★★★★ Brian, 71, Exeter ·
Verified buyer
No heartburn, which I was worried about
"The chemist's cinnamon tablets gave me heartburn. These haven't, not once. Meter 6.4 to 5.9 in 2 months."
9 October 2026
★★★★☆ Janet, 58, Leeds ·
Verified buyer
Dearer than the Amazon tub, and it worked
"Had the cheap tub off Amazon most of last year and my number didnt move. Read the label properly after, 600mg and that was it.
These cost more, I wont pretend they dont. HbA1c 44 to 41 at my 3 month check so im staying on them."
2 October 2026
★★★★★ Meena, 63, Leicester ·
Verified buyer
They actually answer your email
"I wanted something from a UK company, not American. I emailed to ask about taking it with my statin and somebody wrote back the next morning, properly, not a bot.
6 weeks in and the sugar cravings after dinner have gone right down. Haven't had my retest yet, that's February."
30 September 2026
The 8 newest of 1,184 reviews
Think of your blood as a bath.
Press to see the difference
Without: the sugar pours in fast. The stiff plug lifts only a little, so your level stays high.
With The Leveller: the sugar comes in slower and the plug lifts further, so it drains away to your cells.
The 9 pm biscuit pull
StrongMuch less
Step 1: the tap.
After breakfast, the sugar from your porridge runs into your blood. That is normal.
Step 2: the plug.
Insulin lifts the plug, so the sugar drains into your cells. They burn it for energy.
This is where it goes wrong.
After years, the plug gets stiff. Doctors call it insulin resistance.
It lifts only a little. The sugar stays in your blood.
You feel none of it, until the number on your result.
Step 3: what The Leveller does.
Ceylon cinnamon has a natural part called MHCP. On fat cells it does what insulin does: it helps lift the same plug.
It also turns the tap down, so the sugar from a meal comes in slower.
A smaller rise after breakfast. Less pull to the biscuit tin at night.
Most ground cinnamon in British supermarkets is Cassia. A different plant. Mostly from China and Indonesia. Look at the jar. If it does not say "Ceylon", it is Cassia.
The useful part of cinnamon mixes into fat. In water it does nothing. A sprinkle on porridge made with water, or a dry powder capsule, sends most of it straight through you. MCT oil from coconut carries it into your blood. That is where it needs to go.
The studies worked with 1 to 6 g of cinnamon a day. 600 mg of extract, made 12 times stronger. On the pouch that reads 7,200 mg. In 1 softgel. More than the studies used, without spoonfuls of powder.
10 studies, 543 people with type 2: fasting glucose 1.4 mmol/L lower on average. Cholesterol came down too.
Annals of Family Medicine, 2013
Cinnamon extract, 79 people, 4 months: fasting value 10.3% lower, against 3.4% on placebo. The higher the start, the bigger the drop.
European Journal of Clinical Investigation, 2006
60 people, 40 days, 1 to 6 g: fasting glucose 18 to 29% lower.
Diabetes Care, 2003
6 g of cinnamon with a meal: slower stomach emptying and a lower rise after eating.
American Journal of Clinical Nutrition, 2007
Cinnamon research, as covered in
Straight with you: in the 10-study review the fasting number moved most.
HbA1c is a 3-month average, so it is the slowest number to turn. That is why the guarantee runs 90 days and not 30.
Week 1 and 2:
you notice nothing yet. A stiff plug does not loosen in 10 days.
Week 3 and 4:
the biscuit with the afternoon tea stops. Less pull to the biscuit tin at night.
Week 6 to 8:
on a meter you see the fasting number come down.
Week 10:
ring the surgery for your retest.
Week 12:
it is on your result.
Month 4 and 5:
the plug keeps loosening. If you started higher, it takes longer. That is what the 5-pack is for.
That is why 3 pouches is the most chosen pack, and why the guarantee runs 90 days.
Per softgel: 600 mg Ceylon cinnamon extract (Cinnamomum verum, Sri Lanka) 12:1, equal to 7,200 mg of cinnamon. With MCT oil from coconut. Gelatine shell.
Gluten free. GMO free. Lab tested, every batch, for purity and coumarin. High strength.
No Cassia.
Food supplement, 30 softgels per pouch. Made and lab tested in the EU for Kelvin Labs, a British brand.
How to take: 1 softgel a day, with breakfast, with a mouthful of water. 1 pouch is 30 days.
1 Take it for 90 days
Take The Leveller for 90 days. Then have your retest.
2 Check your number
Your HbA1c from the surgery, a postal HbA1c kit, or the fasting number on your own meter: any of the three counts.
3 Not down? Your money back
Has your number not come down? Email us the date of your retest and you get your money back.
Even with the pouches empty. On the 5-pack too. 1 email to info@kelvinlabs.co.uk is enough, answered within 1 working day.
The questions we are asked most.
Something we have not answered? Email us, and a real person replies within 1 working day.
Yes.
You keep taking what your GP prescribed, exactly as now.
The Leveller goes alongside it, with breakfast. Your nurse sees the result at the retest.
On warfarin or another blood thinner? Mention it next time you collect your prescription.
Both.
With a raised number (42 mmol/mol to 47) it helps loosen the plug while it is still only a number.
With type 2 it helps loosen the plug alongside your tablets. The studies did both.
No.
Ceylon cinnamon helps your cells take up the sugar that is already there. It does not force your number down.
No study recorded a low.
Week 1 and 2 nothing. Week 3 and 4 less pull to sweet at night, and the biscuit with the afternoon tea stops.
From week 6 you see it on a meter. After 12 weeks on your result.
Ring at week 10 and ask for your HbA1c early. Say you have changed your breakfast and want to see. Most surgeries book it.
If not: a postal finger-prick HbA1c kit from an NHS lab, about £20. Or a £15 meter for your fasting number from week 6. Any of the three counts.
No.
One-time purchase. You pay once and nothing follows.
Want more later, you order again yourself.
They exist, and we would rather you knew.
Read the label: 600 mg a day, and no coumarin test printed for the batch.
Ours is 600 mg of a 12:1 extract: 7,200 mg of cinnamon in 1 softgel.
Tested every batch. And your result is the guarantee.
Rather try the tub first? Do. If your number has not moved in 90 days, come back.
1 softgel a day with breakfast, with water. With your porridge, if that is your breakfast.
Missed one: take it with your evening meal. Never 2 at once.
Yes.
The studies had as many men as women. Same dose: 1 a day.
From us direct, nowhere else.
That is how it stays at 50p a day, and every pouch comes from a batch tested this year.
Not in Boots or Holland & Barrett, not on Amazon.
Kelvin Labs is a British brand, and a real person answers every email within a working day.
90 days money back, measured at your retest. 1 email. Even with the pouches empty.
Every year 1 or 2 points higher. You feel none of it. At 48 comes the prescription. And the review every 3 months. The 3-month pack costs 50p a day. With 90 days to see it on your own result.
Yes, I want a better number at my next retest:
After you click: you pick 1, 3 or 5 pouches and pay by card or Apple Pay.
Within 1 minute you have a confirmation by email.
90 days guarantee · Gluten free · GMO free · Lab tested · Alongside your medication
The Leveller
3 pouches · 90 days · £44.95
Welcome to Kelvin Labs. These terms keep things clear and fair for both of us. By placing an order you agree to them.
The Leveller is a food supplement: softgels with Ceylon cinnamon extract (Cinnamomum verum, Sri Lanka) in MCT oil, 30 softgels per pouch. It is designed to support your body, not to diagnose, treat or cure any disease. A food supplement is not a substitute for a varied diet and a healthy lifestyle. Results vary from person to person. Pregnant, breastfeeding, on medication or living with a condition? Check with your GP first. Nothing on this site is medical advice.
When you order, you confirm the payment details are yours and the information you give us is correct. All prices are in pounds sterling and include VAT. Offer prices and discounts apply at the moment of ordering and may change afterwards.
Every order is a one-time purchase: you pay once at the price shown at checkout (£26.95 for 1 pouch, £44.95 for 3 pouches, £64.95 for 5 pouches) with no further deliveries or charges. There is no subscription. Questions about your order? Email info@kelvinlabs.co.uk. We answer every email, so you always know where you stand.
We deliver across the United Kingdom, free of charge. Occasionally a delivery is delayed, and that is outside our control. You can always email us about the status of your order.
You have a 14-day statutory cooling-off period from the day you receive your order. Within that time you may cancel your purchase without giving a reason. On top of that we give you a 90-day money-back guarantee. The details are in our Returns Policy. In short: if you're not happy, email us and we sort it out.
All content on this site (text, images, brand names) belongs to us or our licensors and is for your personal use while shopping. Do not copy, sell or misuse it.
We stand behind our products and our service. To the extent the law allows, our liability for any claim relating to a purchase is limited to the amount you paid for that purchase, and we are not liable for indirect loss. This does not limit the rights you have as a consumer that the law says cannot be limited.
Email us first: info@kelvinlabs.co.uk. Almost everything is resolved with a couple of friendly emails. If we genuinely cannot sort it out together, the laws of England and Wales apply and you may bring the dispute before the courts of England and Wales.
We may update these terms from time to time. The version in force at the moment of your purchase applies to that purchase.
Questions? We reply quickly: info@kelvinlabs.co.uk
Your privacy matters to us. This policy explains in plain English what we collect and why.
Order details: your name, delivery address, email address and phone number, so we can deliver your order and keep you informed.
Payment: processed by certified, PCI-compliant payment partners (such as Stripe and Apple Pay). We never see or store your full card number.
Use of the site: like most online shops we use cookies and similar technologies (including analytics and advertising pixels, for example from Meta) to understand how the site is used and to show relevant offers.
To process and deliver your order, provide customer service, send you updates about your order, improve our site and, unless you have opted out, send you the occasional offer we think you'll like. Every marketing email has an unsubscribe link.
Only with the partners who help us serve you: payment processors, fulfilment and delivery partners, our customer service tools and analytics and advertising platforms. They receive only what they need for their work and must protect it. We never sell your personal data.
You can manage or block cookies at any time in your browser settings. Advertising platforms also offer their own opt-outs.
We use SSL encryption across the whole site and keep your data no longer than needed for orders, customer service, our guarantee and legal obligations.
Under UK GDPR you may at any time ask what data we hold about you, have it corrected or deleted, restrict processing or have your data transferred. One email is enough: info@kelvinlabs.co.uk. You may also lodge a complaint with the Information Commissioner's Office (ICO).
Our shop is intended for adults aged 18 and over.
If we update this policy, the new version is posted here.
Contact:info@kelvinlabs.co.uk
We want you to try The Leveller with complete peace of mind. That is why every order comes with our 90-day money-back guarantee.
You have a 14-day statutory cooling-off period from the day of delivery. On top of that we give you 90 days from the delivery date to decide whether The Leveller is right for you.
Not satisfied? Email us at info@kelvinlabs.co.uk with your order number. We usually reply within 1 working day.
We may ask you to return the pouches from your order, including empty ones, to the returns address we give you. Return postage is at your cost.
Once your return is confirmed, we refund the full product price to your original payment method, usually within 5 to 10 working days.
The 90-day guarantee applies to one order per customer and per household, so everyone gets a fair chance to try the product. Your 14-day statutory cooling-off period is separate from this and always applies.
Send us a photo within a few days of delivery and we send a free replacement. No need to return it.
If something goes wrong with your order, please contact us first before contacting your bank. We resolve almost every case quickly, and for you that is usually a good deal faster too: info@kelvinlabs.co.uk