20 billionMOVEMENT · COMFORT
L. reuteri LR-G100Chosen for how your gut moves and how it feels. Relevant to bowel movement frequency and abdominal comfort.
Strain family studied in 8 RCTs, 1,087 patients (Li 2024).Skip, pause or cancel in two clicks. Three-month plan saves 25%.
GLEEV 360° BIOM★★★★★286 Reviews
A Probiotic engineered to survive: Feel the difference of a truly healthy gut.
Two capsules a day. 70 billion live cultures across eight named strains, a clinically studied postbiotic and a prebiotic, in a delayed-release capsule built to get past your stomach. Developed by a scientist.
70 BILLIONLive cultures a day
8 STRAINSEvery amount printed
4 JOBSPre, pro, post, delivery
60+ MINIntact in stomach acid
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MADE IN THE UK56 CAPSULES · 28 DAYSVEGAN · NO FRIDGEAPPLE PAY · GOOGLE PAY · PAYPAL
02 · THE PROBLEM
Following leading clinical research: You don't have to live with bloating, constipation or gas.
The 3pm meeting. The belt let out by dinner. Mornings you cannot plan. In an international survey of more than 73,000 adults across 33 countries, conducted online in most of them, more than 40% met the criteria for at least one functional gut problem. It is common. It is not normal. And it is rarely fixed by a capsule that opens in the wrong place.
Bloating after mealsBloated by dinner, most days.
WindWind you have to plan around.
IrregularityGoing every morning should not be a surprise.
Urgency and loose stoolsMornings you cannot predict.
Unpredictable daysFine for a week, then chaos.
03 · WHO BUILT IT
Scientist formulated. Clinically studied ingredients.
Gleev was developed by Tim Verhaeghe, who leads medical and regulatory at Gleev, as a four-part system rather than a single ingredient. Every strain and ingredient was chosen for what the research on it shows.
DEVELOPED BYTim VerhaegheLeads medical and regulatory at GleevWith decades of experience formulating exceptional health products, Tim collaborated with our scientific gut health team to develop Gleev: an all-in-one solution designed to support a truly healthy gut.
Developed by a scientist, not fronted by a face.
04 · DELIVERY
The journey through your stomach matters.
A fasted stomach is about as acidic as battery acid. Most capsules open there. Gleev's delayed-release capsule stayed intact for over an hour in acid of that strength, in laboratory testing, so its contents are carried further down before release.
OPENS HERE, NOT HERE
Stomach · pH 1Capsule stays closed
Further downCapsule opens, contents release
05 · P3X TECHNOLOGY
Four jobs. One capsule. P3X Technology.
Most gut supplements stop at two.
06 · THE ROUTINE
Small daily habit. Serious science.
Two capsules a day, with water, at the same time each day. No fridge. One pack a month.
Month one is arrival. Months two and three are where it becomes a foundation.
Built to get past your stomachIntact for over an hour in stomach-strength acid, in laboratory testing.
A system, not an ingredientFeed, replenish, protect, deliver. Four jobs in one capsule.
Scientist formulatedDeveloped by Tim Verhaeghe as a four-part system, with every amount printed on the label.
L. reuteri LR-G100, 20bnL. paracasei LPc-G110, 20bnL. rhamnosus GG, 5bnB. longum BL-G301, 5bnplus four more named strainsHumiome® Post LB 170mginulin 100mgvitamin B2 1.4mg
07 · TRANSPARENCY
Inside the capsule. Every strain, every amount, every job.
Eight named strains with their codes and amounts. A postbiotic with its deposit numbers. A prebiotic. Vitamin B2. A plant-based delayed-release capsule. Every batch tested. We print every strain and every amount. Ask your probiotic to do the same.
20 billionBLOATING · WIND · STOOL FORM
L. paracasei LPc-G110Chosen for bloating, wind and stool form, including hard or lumpy stools.
Strain family studied for bloating, flatulence, stool form and frequency (Compare 2015; Cook 2025).
5 billionRESILIENCE
L. rhamnosus JL-1 GGResilience when your gut is knocked sideways. One of the most studied probiotic strains in the world.
Meta-analyses in acute gastroenteritis and antibiotic-associated diarrhoea (Szajewska 2015, 2019).
5 billionCOMFORT · BOWEL FUNCTION
B. longum BL-G301The bifidobacterium that eats the fibre we feed it. Relevant to the colon, comfort and bowel function.
Species studied in IBS for pain, bloating and permeability; in chronic constipation for stool consistency (Bonfrate 2020; Srivastava 2024).
5 billionBREADTH
B. lactis BL-G101A named Bifidobacterium strain at a printed amount, broadening the formula across both families.
[PLACEHOLDER: no strain-family study listed in the GTM doc for this strain]
5 billionBREADTH
B. bifidum BB-G90A named Bifidobacterium strain at a printed amount, broadening the formula across both families.
[PLACEHOLDER: no strain-family study listed in the GTM doc for this strain]
5 billionBREADTH
L. plantarum YS1A named Lactobacillus strain at a printed amount, broadening the formula across both families.
[PLACEHOLDER: no strain-family study listed in the GTM doc for this strain]
5 billionBREADTH
L. acidophilus LA-G80A named Lactobacillus strain at a printed amount, broadening the formula across both families.
[PLACEHOLDER: no strain-family study listed in the GTM doc for this strain]POSTBIOTIC · 170MGHumiome® Post LB
A defined, heat-treated preparation of L. fermentum CNCM I-2998 and L. delbrueckii CNCM I-4831 with their fermentation matrix. Works whether or not anything survives the journey.
Sold as a licensed medicine in French pharmacies for decades.THE CLINICAL PROGRAMMERandomised, placebo-controlled trials
Five double-blind placebo-controlled paediatric trials in acute diarrhoea; a 137-adult randomised trial in chronic diarrhoea; a 325-patient study on antibiotic-associated diarrhoea; a 297-patient IBS-D study and a randomised crossover trial.
Salazar-Lindo 2007; Xiao 2003; Tarrerias 2011; Halpern 1996.MECHANISMThe part your probiotic does not have
Mechanism work shows adhesion to intestinal cells, inhibition of pathogen adhesion, protection of tight junctions and a bifidogenic effect.
Warda 2021. Research on the postbiotic preparation.PREBIOTIC · 100MGChicory inulin
A fibre that resists digestion and reaches the colon, where it is selectively used by bifidobacteria, including the three in this capsule.
Gibson 2017; Nagy 2023.BIOPROTECTIONOne ingredient, two jobs
In formulation studies inulin improved the viability and stress tolerance of lactobacilli, including LGG, under simulated gut stress and in storage. The fibre looks after the cultures before they get to work.
Padilha 2013; Savedboworn 2017; Oliveira 2011.VITAMIN B2 · 1.4MG100% NRV riboflavin
Vitamin B2 contributes to the maintenance of normal mucous membranes.
Authorised claim.THE SHELLPlant-based, delayed-release
A clear vegetarian capsule of gellan gum and pectin, specified to resist disintegration for more than 30 minutes.
THE TESTIntact for over 60 minutes
Acid-resistance test reports show the capsule intact for over 60 minutes in 0.1M hydrochloric acid, about pH 1, the acid strength of a fasted stomach.
A laboratory test on the capsule. Not a human outcome.THE RESULTOpens here, not here
Contents are carried past the stomach and released further down, where the cultures, fibre and postbiotic are meant to work.
MANUFACTUREMade in the UK
Every batch tested for microbial contaminants and heavy metals (not more than 10ppm).
THE LABELVegan. No allergens.
No GM material. Not irradiated. 56 capsules, 28 days, two a day.
LIVING WITH ITNo fridge. Two-year shelf life.
Two capsules with your first glass of water. That is the whole routine.
08 · THE SWITCHER'S TABLE
Gleev against a typical probiotic.
GLEEV 360° BIOM
Typical probiotic
Delayed-release capsule tested in stomach-strength acid
✓Yes
Varies; often a standard capsule
Amount disclosed per strain
✓Yes, all eight
Often a blend total only
Live cultures per day
✓70 billion across eight strains
Commonly 1 to 20 billion; varies
Postbiotic included
✓Yes, 170mg, clinically studied
Rarely
Prebiotic in the same capsule
✓Yes, 100mg inulin
Sometimes
Developed by a named scientist
✓Yes
Varies
09 · REVIEWS
What customers say.
Two capsules with my first glass of water and I barely think about it now. By week four my afternoons felt noticeably calmer.
Maya R. · Verified buyerEvery strain and every amount is printed. I had tried three other probiotics that told me almost nothing. This is refreshingly clear.
Daniel K. · Verified buyerI travel a lot, so not needing a fridge matters. It lives in my bag and I never forget it.
Priya S. · Verified buyerI didn't notice much in the first two weeks, then things settled by week five. Glad I kept going.
Tom H. · Verified buyerIt works out cheaper than monthly and I like that I can skip a delivery when I'm away.
Hannah L. · Verified buyerSome supplements upset me. These have been fine from day one, and the capsule is easy to swallow.
Chris B. · Verified buyerTwo capsules, same time each day, that's it. The packaging is lovely too.
Sofia M. · Verified buyerI like knowing there's a prebiotic and a postbiotic in the same capsule. It feels like someone actually thought it through.
Oliver J. · Verified buyer10 · PLANS
Pick your plan.
Renews on the plan's cycle. Skip, pause or cancel in two clicks.
.
Skip, pause or cancel in two clicksCheckout in two stepsApple Pay, Google Pay, PayPal
11 · FAQ
Questions, answered.
Anything missing? Write to us and we will answer it here.
The ingredients, strains and capsule are. The two lead strain families have published human research on bloating, stool form and bowel movement; LGG is one of the most studied probiotic strains in the world; the postbiotic has randomised, placebo-controlled trials and has been sold as a medicine in French pharmacies for decades; the capsule has been tested in stomach-strength acid. The finished product has not been the subject of its own clinical trial.
Because 70 billion cultures, 170mg of postbiotic and 100mg of fibre do not fit in one. Two with your first glass of water is the whole routine.
Month one is arrival. Months two and three are where it becomes a foundation. Nothing dramatic in the first fortnight is normal. If something is wrong, speak to a doctor.
Skip, pause or cancel in two clicks from your account. Your next shipment date is always shown.
Yes. Vegan, no allergens, no GM material, not irradiated.
No. Two-year shelf life at room temperature.
Speak to a pharmacist or doctor before combining Gleev with medicines or other supplements.
The UK and the EU. [PLACEHOLDER: euro price list per market to be set by finance; EU delivery terms to confirm.]