Tumble™ Synbiotic

Tumble™ Synbiotic

Refill Pouch
£39.50

Feel gut confident in 12 weeks

4.83 / 5 Read reviews
Tumble™ Synbiotic
Tumble™ Synbiotic
Tumble™ Synbiotic
Tumble™ Synbiotic
Tumble™ Synbiotic
Tumble™ Synbiotic
Tumble™ Synbiotic
Tumble™ Synbiotic
Tumble™ Synbiotic
Tumble™ Synbiotic
Tumble™ Synbiotic
Tumble™ Synbiotic
Tumble™ Synbiotic
Tumble™ Synbiotic

Feel gut confident in 12 weeks

4.83 / 5 Read reviews
Backed by nutritionists, dietitians, doctors, chemists & more
Becca, Tumble expert Omar, Tumble expert Felicia, Tumble expert Chris, Tumble expert Nilsu, Tumble expert
Our expert team Science-led from formulation to finished product.
2 CAPSULES A DAY COMPREHENSIVE FORMULA EXPERT FORMULATED MADE IN THE UK INDEPENDENTLY LAB TESTED

A more comprehensive daily formula — bringing live cultures, digestive enzymes, fibres + key micronutrients together in one simple routine.

Helps you feel more supported and more settled — so your gut takes up less of your day.
Helps reduce tiredness and fatigue — so you feel less drained as the day goes on.
Supports immunity and healthy skin — giving you more from one simple daily routine.

Take at least 3 months for optimal results.

30-day money-back guaranteeTry Tumble risk-free today. If it’s not for you, get your money back. What’s there to lose?
Benefits
Boosts microbial diversity in your diet
11 live culture strains and 42 billion CFU per day, with acid-resistant strains formulated to reach the gut alive.
Helps fight tiredness & fatigue
Vitamin B2 and B12 contribute to the reduction of tiredness and fatigue.
Assists the immune system
Vitamin D contributes to the normal function of the immune system.
Ingredients
Serving size: 2 capsules30 servings per pouch
Live cultures11 strains · 42.88 bn CFU
5 Lactobacillus · 5 Bifidobacterium · 1 Streptococcus
Prebiotic fibres2 fibres
Fructooligosaccharides + inulin
Digestive enzymes6 enzymes
Alpha-galactosidase, lactase, cellulase, protease, amylase + lipase
Vitamins & micronutrients10 nutrients
B1, B2, B5, B6, B12, D3, E, folic acid, biotin + selenium
How to take

Take two capsules a day with a glass of water. Any time of day is fine, so choose whatever fits most easily into your routine. Please don’t exceed the recommended daily dose.

Some people prefer taking them with food if that feels more comfortable - see what works best for your routine.

Top tip: take Tumble at roughly the same time each day so it becomes an easy habit.

Tumble® Synbiotic

Nutritional information

Serving size: 2 capsulesServings per container: 30
Per serving% NRV
Prebiotic fibres
Fructooligosaccharides255 mg
Inulin40.8 mg
Digestive enzymes
Alpha-galactosidase51 GALU
Lactase2,652 ALU
Cellulase122 CU
Protease (fungal)408 HUT
Amylase800 DU
Lipase204 FIP
Live cultures11 researched strains · 42.88 bn CFU
Lactobacillus acidophilus7.72 bn CFU
Streptococcus thermophilus5.84 bn CFU
Bifidobacterium animalis5.62 bn CFU
Bifidobacterium longum3.86 bn CFU
Lactobacillus plantarum3.59 bn CFU
Bifidobacterium infantis3.47 bn CFU
Bifidobacterium bifidum2.96 bn CFU
Lactobacillus rhamnosus2.84 bn CFU
Lactobacillus reuteri2.84 bn CFU
Lactobacillus casei2.10 bn CFU
Bifidobacterium breve2.04 bn CFU
Vitamins & micronutrients
Vitamin B18.7 mg791%
Vitamin B214.3 mg1021%
Vitamin B56.1 mg102%
Vitamin B62.9 mg207%
Vitamin B1210 µg400%
Vitamin D320.4 µg408%
Vitamin E6.1 mg51%
Folic acid400 µg200%
Biotin200 µg400%
Selenium25.5 µg46%
NRV = Nutrient Reference Value. NRV is not established for live cultures, fibres or digestive enzyme activity units.

Full ingredient list

Cichorium intybus, capsule shell: hydroxypropyl methylcellulose, alpha-galactosidase (GLUTEN), lactase, cellulase, protease (fungal) (GLUTEN/WHEAT), Bifidobacterium longum, Lactobacillus acidophilus, Bifidobacterium infantis, amylase, Streptococcus thermophilus, Lactobacillus reuteri, Rhizopus oryzae, Bifidobacterium animalis, riboflavin, Bifidobacterium bifidum, thiamin HCl, Lactobacillus rhamnosus, lichen, d-alpha-tocopheryl succinate, Lactobacillus plantarum, Lactobacillus casei, Bifidobacterium breve, calcium pantothenate, L-selenomethionine, pyridoxine HCl, folic acid, biotin, cyanocobalamin, maltodextrin, calcium gluconate, bulking agent: D-mannitol, acidity regulator: sodium citrate, corn starch, potato dextrin, stabiliser: gum arabic, medium-chain triglycerides (from coconut oil), antioxidant: ascorbic acid.

Allergen information: ingredients shown in bold contain gluten/wheat.
Our quality standards
Third-party
lab tested
Made in
the UK
GMP
manufacturing
HACCP & FSSC
standards
GMO-free
formula
Expert
formulated

Backed by nutritionists, doctors, dietitians & more

Tumble helps people feel more like themselves.

★★★★★ ★★★★★
4.83 out of 5 Read reviews
★★★★★

Third box

Just opened my third box which probably says it all. Easy to take, no fuss, and I notice the difference in how settled my stomach feels.

31 Jul 2026 Ben Walker ✓ Verified Buyer
★★★★★

Five stars

Genuinely really good.

7 Jul 2026 Carlos Mendez ✓ Verified Buyer
★★★★★

surprisingly good

honestly didn’t expect to notice much but I have. stomach feels calmer and I’m not getting that stuffed feeling after normal meals. keeping these.

27 Jun 2026 Luca Romano ✓ Verified Buyer
★★★★★

Great Product

Five stars.

20 Jun 2026 Samalvarezcaswell ✓ Verified Buyer
★★★★★

Good at 42

I’m 42 and started paying more attention to gut health this year. This has been one of the easiest changes to keep up with. Dinner doesn’t leave me feeling as uncomfortable and I feel generally lighter afterwards.

21 Jun 2026 Daniel Carter ✓ Verified Buyer
★★★★★

Five stars

Such a great product for maintaining gut health and helps me every day to ensure that my body is functioning as it should do.

20 Jun 2026 Oscar ✓ Verified Buyer
★★★★★

Five stars

I am really into my supplements and have found such a change with using Tumble. It’s so easy and well designed for ease of access. With backed research, I can genuinely say it’s made such a difference!

10 Jul 2026 Alex Waplington ✓ Verified Buyer
★★★★★

Simply a must have!

I noticed significant changes to my energy throughout the day. I didn't realise my gut was such a factor in this but Tumble has really changed my life. After years of feeling tired all afternoon, especially after big meals. I cannot recommend this enough. Simply a must have!

20 Jun 2026 Ben Miller ✓ Verified Buyer
★★★★★

Food is much easier on me

I have trouble metabolising a lot of the food I eat and have tried every jab and pill out there, really happy with these, only on my 5th month at the moment but have found things are really much more settled and the journey is going well.

Jess M. ✓ Verified Buyer
★★★★★

IBS and normally react to everything

Had IBS pretty much since I left school, and I tend to react to pretty much anything new, but these were completely fine for me. No problems at all. Would recommend. 10/10

Carole M. ✓ Verified Buyer
★★★★★

Better relationship with what I eat

I tried keto, paleo, vegan, carnivore etc and was always overthinking food. Now I just eat a generally healthy diet and don’t worry about it as much. I can’t thank you enough for this. Subscribed monthly for myself and my partner.

Cal M. ✓ Verified Buyer
★★★★★

PCOS experience

I have PCOS so I’m quite picky with supplements, but these have been absolutely fine for me and really easy to take consistently. I sprinkle them in my cereal... tastes a bit like orange.

Hannah J. ✓ Verified Buyer
★★★★★

It's all I take now

I don’t normally write reviews but I have been so chuffed with the results. I decided to stop taking all the stuff I was taking before and give this a go and genuinely cannot believe the difference. I spend less, eat less pills, and can really tell a massive difference. I may also take Iron at some point as I think I am low, but I will get this checked. Couldn’t be happier, turns up every month like clockwork.

Yasmin G. ✓ Verified Buyer
★★★★★

Tumble bacteria review

This is my 5th month using Tumble and the difference has been very noticeable. It took a couple of months before things became quite obvious, I also feel like my immune system is doing what it should. I’m less tired and just generally feel like my body is handling things much more manageably.

Katie E. ✓ Verified Buyer

A more comprehensive way to support your gut.

Tumble brings live cultures, digestive enzymes, prebiotic fibres and key micronutrients together in one simple daily routine.

Becca Taylor, Tumble nutritionist

Becca Taylor explains what makes Tumble a more comprehensive daily synbiotic.

Tumble customer

Results after 60+ days

Real feedback from customers who made Tumble part of their daily routine.

0%

reported more predictable digestion

0%

reported a calmer metabolism

0%

reported more consistent energy

0%

reported better focus

Based on feedback from 52 Tumble customers taking Tumble for at least 60 days. Individual experiences vary.

What to expect over time

Small shifts can build with consistency, with many people noticing more as Tumble becomes part of their everyday routine.

Week 1

The first shifts

  • Your daily routine begins with live cultures, fibres, enzymes and key micronutrients.
  • Some people notice early changes in afternoon energy or digestion, while others take longer.
Month 1

Changes take shape

  • Digestion may begin to feel more comfortable and predictable.
  • You may notice steadier afternoon energy and your skin may start to look a little brighter.
Month 3

Feel the shift

  • 88% reported more predictable digestion.
  • 94% reported a calmer metabolism.
  • 98% reported more consistent energy.
  • 92% reported better focus.
Month 6+

Make it your new normal

  • Keep supporting the balance and consistency you've built.
  • Ongoing daily support for energy, immunity, skin and your wider gut-health routine.
Tumble daily routine

More complete support

Why do you think you normally can't feel your supplements?

Tumble compared with typical supplement brands

It's no surprise people are making the change and finally feeling lighter, more confident, and happy with their results. The work and thinking that goes into our Synbiotic is second to none.

Benefits of Tumble

Here are a few highlights of how you'll benefit.

Gut lining support

Riboflavin and niacin contribute to normal membranes, supporting your gut lining.1

Immune defence

Vitamin D, selenium and B12 contribute to immune function, helping keep you resilient.3

Sustained energy

Vitamin B12 and riboflavin help reduce tiredness, supporting energy without the afternoon crash.2

Mental performance

Niacin and vitamin B6 contribute to psychological function, helping you stay focused and clear.4

Metabolic support

Biotin and vitamin B1 contribute to metabolism, supporting how your body works with food.5

Skin, hair & nails

Biotin contributes to the maintenance of normal skin and hair; selenium contributes to normal nails.6

Our response to the supplement industry

What matters isn’t how well you market your supplement, but how comprehensively you approach the problem.

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Built as a complete system

We don't just throw bacteria at a problem.

We designed a four-layer system built around interaction and absorption - live cultures, fibres, enzymes and supporting nutrients.

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Made here, tested here

Made in the UK to the highest standards, in a GMP-certified clean-room facility and third-party lab tested for purity - none of which are requirements under UK law.

View our latest lab test results here

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Chemistry matters

Formulated by an experienced chemist to reach the gut alive, focusing on dosage architecture, stability and factors influencing absorption.

Tumble is a structured, science-led formulation designed as one complete system.

"We are more microbial than human"

"We are more microbial than human"

- Dr. Justin Sonnenburg

Stanford Center for Human Microbiome Studies

Stanford Center for Human Microbiome Studies

Frequently asked questions

Still have questions? Check our FAQs

Is Tumble a probiotic?

Tumble contains live cultures, so it could be considered a probiotic. It also includes fibres such as inulin and fructooligosaccharides (FOS), which are often referred to as prebiotics. However, we refrain from using this term, we describe Tumble as a food supplement, in line with current UK guidance on how these products are presented.

How do I know if Tumble is right for me?

Tumble is for those who want to support everyday metabolism¹ and build a consistent, simple routine. From maintaining energy² and immune function³ to supporting normal psychological function⁴ and skin health⁵, it brings together multiple elements in one place - reducing the amount of supplements you need to take, all interactions and absorbtions are accounted for within our formula.

It also includes nutrients that contribute to the protection of cells from oxidative stress⁶, as part of a more complete approach to supplementation and general wellness.

How do I take Tumble - and does it need to be with food?

Take two capsules daily.
For best results, take them at least 20 minutes before or after drinking hot liquids, as high temperature liquids can affect live cultures.

Food: Ideally taken with food, but it’s not essential. You’ll still benefit if taken on an empty stomach as our formula accounts for all circumstances. Consistency matters far more than timing — it’s better to take Tumble every day than to wait for the “perfect” moment.

Timing
: Any time, day or night. However, most customers say taking Tumble earlier in the day really helps with tackling afternoon fatigue.

Bottom line: Take your Tumble daily. Consistency beats perfection, every time.

How long will it take for Tumble to work?

The first thing some people notice is a change in energy, often relatively quickly. Tumble’s other benefits may be a little more gradual.

There’s no single timeline, as everyone adapts differently to the formula. What we do know is that consistency wins. We recommend taking Tumble for at least 90 days, with the vast majority of people noticing a meaningful difference within that time - most then choose to continue daily to maintain that feeling.

The British Society of Gastroenterology recommends a minimum of three months when trying a new bacterial product.

What if i don't want to take 2 capsules a day?

One capsule is only a fraction as good as two — not half as good.

It simply wasn’t possible to fit the full formulation into a single capsule. Even two was an enormous challenge.
Only a two-capsule serving allows the formulation’s benefits to be delivered as intended.

Tumble is one of only a few capsules in the UK successfully combining live cultures, enzymes, fibres, and micronutrients in one formula. We aren't suprised, fitting everything in while maintaining stability is no small task, particularly as enzymes and live cultures are difficult to keep shelf stable when combined.

Don’t like swallowing capsules?

Simply twist open the capsules and sprinkle onto (cold) food or into a drink.

How does the 30 Day Money back Guarantee work?

We stand behind what we make, the formulation, and science that has gone into it. We don't feel right taking your money if you don't feel Tumble is adding value to your life.

If for any reason you decide Tumble isn't working for you within 30 days of your first order, return it for a full refund. 

Can I take other supplements with Tumble?

Yes, you can. Tumble simply reduces the amount of supplements you take. We would also recommend omega-3 (with a high EPA & DHA content) to most people in the UK, unless you eat (oily) fish 3+ times per week. It wasn't possible to build this into Tumble.

Why can taking less supplements be better?

When you take several supplements together, you’re effectively doing your own formulation — mixing ingredients without knowing how they interact. It’s bathroom chemistry, and the results tend to reflect that. Tumble means you need to take less supplements, some people only take Tumble.

Unless you’re a chemist, it quickly becomes guesswork. Ingredients don’t just sit side by side - they interact. Some compete for absorption, some influence each other, and bacterial strains can even suppress each other if poorly balanced with other ingredients.

That’s why real formulation relies on clinical research, academic data, and context. The decision to include an ingredient - and how much of it - is the result of weeks of careful consideration by experienced professionals, not simply adding things that sound beneficial in isolation.

You’re also relying on multiple manufacturers, each with different sourcing, quality standards, and levels of lab testing - increasing the risk of poor quality and impurities.
Tumble exists as a response to that. We only make one thing.

Everything is built as one considered system - with ingredients selected, combined, and dosed to work together, not just sit alongside each other.

Personalised nutrition coaching

Work one-to-one with Tumble’s registered nutritionist for deeply personalised coaching.
Becca works to uncover the root causes behind your symptoms - with tailored support built around your body, lifestyle, routine and long-term health goals.

Explore coaching
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Explore coaching

Customer Reviews

Based on 135 reviews
89%
(120)
8%
(11)
1%
(2)
0%
(0)
1%
(2)
E
Ethan Ward
Still waiting

It’s been a week and it’s still not here.

Hi Ethan, we're sorry you've had some delay. We can see from the tracking that this arrived 2 business days after your purchase, but it may have been delivered by the postman to the wrong address, all looks fine from our end, so we will contact Royal Mail.

We have now sent another Starter Kit out for you free of charge and will email you a £15 coupon for your next order.

Best wishes and apologies for the delay,
Tumble

M
Miguel Santos
Actually finished the pack

This sounds like a low bar, but I never finish supplements. I finished this one, ordered again and am still taking it. That’s probably the best review I can give.

C
Chris Hall
Bought for my husband, kept some for me

Originally ordered for my husband because he’s always complaining about feeling bloated after dinner. I ended up trying them too and now we both take them. We’ve just reordered the bigger pack.

B
Ben Walker
Third box

Just opened my third box which probably says it all. Easy to take, no fuss, and I notice the difference in how settled my stomach feels.

T
Tracy

On tesesrch ptoduct isnt as beneficial as ℹ initially thought

Hi Tracy, thanks for your feedback. We’re sorry it hasn’t felt as beneficial for you personally, though we do stand strongly behind the formulation. It was developed with input from a panel of scientists and specialists, using carefully selected ingredients and doses, which also makes it an expensive product to manufacture. That said, everyone’s experience can differ, and we appreciate you giving it a try and sharing yours.

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Food supplements should not be used as a substitute for a varied, balanced diet and healthy lifestyle. Do not exceed the recommended daily intake. Keep out of reach of children. If pregnant, breastfeeding, taking medication, or under medical supervision, consult a healthcare professional before use. Store in a cool, dry place away from direct sunlight.

© 2026 Tumble.

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Potential Adjustment Effects:


Most of what you will notice are positive changes to your metabolism, immune system, energy, skin and overall wellbeing.
So don't panic if your body goes through an adjustment period as it adapts to our formulation.

Bright yellow wee: Totally harmless and normal for many, happens for the same reason as Berocca. This is due to our high vitamin B2 (riboflavin) content. Like all B vitamins, any excess is naturally excreted once your body has absorbed what it needs.

Digestive changes/bloating: No cause for concern. Our formula is potent and comprehensive — your body may take time to adjust to our live cultures, fibres, enzymes and micronutrients. Reducing your dose temporarily may help.

Mild digestive sensitivity: Some individuals may experience mild discomfort when first starting. This typically resolves quickly. Simply halve your dose until you have adjusted.Changes in digestive patterns: Temporary changes in frequency or consistency can occur as your system adapts.

Allergen information:

Contains: Gluten (Wheat).



Scientifically recognised nutrient contributions:

Gut


1. Riboflavin contributes to the maintenance of normal mucous membranes (e.g. intestinal mucosa). Biotin contributes to the maintenance of normal mucous membranes (e.g. intestinal mucosa).

Energy


2. Riboflavin, thiamine, vitamin B6, vitamin B12 and biotin contribute to normal energy-yielding metabolism. Riboflavin, vitamin B6 and vitamin B12 contribute to the reduction of tiredness and fatigue.

Immunity


3. Vitamin D, vitamin B6, vitamin B12 and selenium contribute to the normal function of the immune system.

Brain


4. Thiamine, riboflavin, vitamin B6, vitamin B12 and biotin contribute to normal psychological function and the normal functioning of the nervous system.

Metabolism


5. Biotin contributes to normal macronutrient metabolism. Vitamin B6 contributes to normal protein and glycogen metabolism. Riboflavin contributes to the normal metabolism of iron. Vitamin B6 contributes to normal cysteine synthesis.

Skin, Hair & Nails


6. Biotin contributes to the maintenance of normal skin and hair. Riboflavin contributes to the maintenance of normal skin. Selenium contributes to the maintenance of normal hair and nails.

Hormonal Activity


7. Vitamin B6 contributes to the regulation of hormonal activity.

Cell Devision & Blood Formation


8. Vitamin B12 contributes to normal red blood cell formation and has a role in the process of cell division. Vitamin B6 contributes to normal red blood cell formation. Vitamin D has a role in the process of cell division.

Heart & Homocysteine Metabolismal


9. Thiamine contributes to the normal function of the heart. Vitamin B6 and vitamin B12 contribute to normal homocysteine metabolism.

Bones, Teeth & Muscle Function


10. Vitamin D contributes to the maintenance of normal bones, teeth and muscle function, to normal blood calcium levels and to normal absorption/utilisation of calcium and phosphorus.

Thyroid & Reproductive Health


11. Selenium contributes to normal thyroid function and normal spermatogenesis.

Protection of Cells


12. Riboflavin, vitamin E and selenium contribute to the protection of cells from oxidative stress.