4.7/5 based on 2,297+ reviews

5 reasons probiotics haven’t worked for you (yet)

It's exhausting dealing with an unpredictable gut, constant worry and feeling out of control.

You feel like you've tried every probiotic out there, but nothing's worked.

We get it. But it's not you. It's them. 

Here's why...

1. They never reached the gut alive

Beneficial bacteria need to be alive and active to make an impact.

Formats like liquids, powders and standard capsules leave probiotics unprotected, meaning they either die on the shelf or in stomach acid, failing to survive the journey to the gut.

2. They’ve not been tested for efficacy

Untested ingredients, formulas and formats not backed by science lead to ineffective products that just don't work.

Most probiotics aren’t tested for survival in the right conditions that mimic the gut, so the 'beneficial' bacteria is set up to fail.

3. They’re made with low doses & harmful ingredients

Many products combine low doses of bacterial strains with harsh toxins, fillers and bulking agents, plus sugar, sweeteners and fibres, all leading to symptom flare ups.

Unnecessary additions like these can unsettle the gut and cause more harm than good.

4. The wrong type of bacteria for your gut

Many probiotics are chosen for marketing purposes and low costs, and not to withstand the harsh conditions of the stomach acid.

It's important to choose reputable strains tested for stability to make sure they work in synergy to support the gut.

5. The label promised more than it delivered

The truth is, most probiotic label claims are incorrect.

They may have had 60 billion CFUs (colony forming units of bacteria) at time of manufacture, but live bacteria often degrades quickly in its packaging and dies before you’ve even taken it.

Take back control with Biotic⁺

One of the UK’s most validated gut supplements, Biotic⁺ is formulated with 7 science-led strains in a delayed-release capsule proven to survive stomach acid.

Made by doctors and dietitians, it's backed by 380+ studies to help your gut feel lighter, more settled and predictable.

  • GLUTEN

  • GMOs

  • DAIRY

  • ANIMAL BY-PRODUCTS

  • FILLERS

  • ALLERGENS

  • CONTAMINANTS

  • ADDITIVES

  • TOXINS

  • HEAVY METALS

  • SUGAR

Trusted by 150,000+ customers

"No more tummy worries. Brilliant product. Solved all my digestive issues."

– Rebecca

"Within a month, I have noticed definite improvement in my gut health; no more discomfort or bloating. Overall I feel generally better and have an improved sense of well-being."

– Edward

"Really starting to see a difference after two months, more settled stomach, more regular 💩"

– David

"Gut health at its best. Helped so much with digestion. Helped with my energy levels as well. Great product."

– James

Why you can trust Biotic⁺

Survives stomach acid

Delayed-release capsule delivers live bacteria. Proven 50x more effective than leading probiotics.

Gold standard testing

Rigorously tested in third party labs both in vivo and in vitro, for results you can trust.

Clean ingredients

No sugar, fibre, fillers or toxins to unsettle the gut or cause angry flare ups.

Expert-backed strains

7 science-led strains, specially chosen for your gut by leading doctors and dietitians.

Exceeds label claim

Proven to deliver at least 20 billion CFUs (and delivered 3x more than its label in third party testing).

What you can expect

No surprises, no false promises, just long-term results.

Month 1

You may notice some gentle shifts in the first few weeks, that’s simply your gut adjusting to the new bacteria.

Month 2

As your microbiome rebalances, things may start running a little smoother down there. Leaving you feeling lighter through the day.

Month 3

Consistency brings stability. By now, the bacteria have made themselves at home. This is often when your gut begins to feel more predictable and balanced.

Month 4+

With continued use, you'll be supporting long-term balance from within. This is when you'll feel your most steady, comfortable and at ease day-to-day.

START NOW

Backed by industry-leading scientists

Formulated by leading voice in gut health and nutrition, Sophie Medlin, RD, backed by 380+ scientific studies and trusted by healthcare professionals.

Sophie Medlin

RD
Head of Nutritional Research | City Dietitians

Dr. Tara Swart

MD, PhD

Science Advisor | MIT Sloan

Dr. Harry Jarrett

PhD, MRSB

Director of Science & Research | Heights

Professor Shumone Ray

MBBS (Hons), MPH, MD, DNHE, RNutr
Professor of Global Nutrition & NNEdPro Chief Scientist 

Professor Mary Ward

PhD, RD, BSc

Professor of Nutrition and Dietetics | Ulster University

Professor Andy Jones

BSc, PhD, DSC

Professor of Applied Physiology | University of Exeter

Professor Anne-Marie Minihane

PhD, BSc
Professor of Nutrigenetics| UEA Medical School

Dr. Agata Sobczynska-Malefora

PhD, MSc, FRSC, CChem, CSci
Consultant Clinical Scientist & Honorary Senior Clinical Lecturer / Synnovis, St Thomas' Hospital

Oliver Patrick

Physiologist

Chief Wellbeing Officer | Heights

Did you know...

Supplement brands aren't legally required to have any medical input on the design of their products. We work with Dr Tara Swart, PhD and Sophie Medlin, RD to formulate every supplement.

Love Biotic⁺, or it's on us

Biotic⁺ keeps things moving, so you can show up as the best version of yourself.

We're so confident you'll feel the benefits, we offer a 30-day money-back guarantee.

Give us a try, you've got nothing to lose.

4.7
Rated 4.7 out of 5 stars
Based on 2,424 reviews
2,424 reviews
  • Tommy
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    23 seconds ago
    5 stars

    5 stars

  • MRS
    I recommend this product
    Rated 5 out of 5 stars
    Yesterday
    5 Stars

    Quick delivery

  • Kate L.
    Flag of United Kingdom
    Verified Buyer
    I recommend this product
    Age Range 45 - 54
    Had you tried a different probiotic before trying Biotic⁺? No
    Rated 4 out of 5 stars
    2 days ago
    Positive effects

    I feel like me again

    ResultsRated 4.0 on a scale of 1 to 5
  • Ben
    I do not recommend this product
    Rated 2 out of 5 stars
    3 days ago
    2 Stars

    Good amount of probiotics but no need for potato starch in it. Defeats the pupose of a gut healthy supplement

  • I
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    4 days ago
    5 stars

    5 stars