PrecisionBiotics® Immune combines a targeted bacterial culture with extra strength Vitamin D to support your immune system*


Ready for New Beginnings? Join the new, 12-week gut-health programme by Alflorex®


Ready for New Beginnings? Join the new, 12-week gut-health programme by Zenflore®


Precision Cultures for Targeted Action

We've researched hundreds of bacteria to find the precise bacteria that have a significant impact on human health.

Alflorex Capsules 30pk
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Zenflore Capsules 30pk
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Alflorex New Beginnings
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Alflorex Chewables 30pk
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Zenflore Blister 60pk
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Alflorex Blister 60pk
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Zenflore New Beginnings
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PrecisionBiotics Group Ltd

Over 17 years ago, our scientists began researching thousands of live bacterial cultures (also known as probiotics) together with experts from one of the world's leading centres of microbiome research.

Since then, they've discovered hundreds of different bacterial cultures and they've put each one through rigorous scientific tests. Amongst these hundreds are a handful of special bacteria that stand out because of the precise and significant impact they make to human gut health.

When these unique cultures pass all our tests, which include clinical trials in the UK and Europe, the PrecisionBiotics® team are proud to produce them in a high quality and convenient form for consumers and clinicians.

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Scientist working on Precision Biotic healthcare products for IBS, Stress & Anxiety

Natural Science, Ready to Work for You

All of our products contain bacteria that occur naturally in the human gut and are at home there.

We spend many years observing and testing them in real people to ensure they deliver the precise effects needed and that they meet our rigorous safety standards.

To ensure they reach your gut in peak condition we have created special formulations and we have confirmed their activity in the gut using the highest standards of scientific testing and human clinical trials. These stable formulations also ensure that none of our products need refrigeration.

Natural Science, ready to work for your health | Ladies tummy picture

Precise Bacteria, Exact Quantity

We're often asked why our products contain only 1 or 2 types of bacteria, instead of a mix of 5 or even 10 types. As scientists, we know that mixing multiple bacterial cultures does not guarantee that each will retain its properties or that different cultures will even complement each other. Different cultures behave in different ways and may even have competing effects. 

It is the specific culture of bacteria and how that culture interacts with your unique gut bacteria that determines whether you will notice a difference.

So our focus is on discovering the best bacterial culture for each specific gut action. We put each through a rigorous series of tests, culminating in clinical trials in the UK and Europe. 

We then produce a pure formulation, with no added bulk yoghurt cultures nor cultures of animal origin as they are not native to the human gut. We also guarantee that the number of bacteria is the optimal amount for each PrecisionBiotic and the human gut. The selected bacterial culture in each of our products is also stable at room temperature and does not need refrigeration.

We provide a PrecisionBiotic® product that we can guarantee and that clinicians can recommend.

Alflorex Reviews

"I had times where I'd be doubled over in pain and the bloating is all consuming, it was so bad that I have clothes ranging from a size 8 to 16 in my wardrobe, sometimes, I literally cannot pull on my jeans. I would have very frequent panic attacks in situations I felt I couldn't easily escape from if I was having a flare-up. Then I came across Alflorexand I was so impressed that I just kept taking them!

Scarlett LondonHeadshot_Scarlett_396x409



These were unique symptoms that I had never come across before. It was extreme debilitating abdominal pain and then all sorts of bowel symptoms. I started taking Alflorex, the first month it lines your gut and since the second month, I've been symptom free! I can literally eat whatever I want and it will not trigger any of my symptoms.

Zoe Salmon,
TV PresenterHeadshot_Zoe_396x408px


Alflorex Review

Our son is 2½ and has had constant toddler diarrhoea. He’d have diarrhoea 8-10 times per day and loose stools for 10 weeks at a time. We discussed his diet with the GP and he recommended lactose and gluten free but it made no difference. We’ve tried other probiotics, no difference either. Within his 1st month on Alflorex, he had firmer stools. He’s on it 6 months now and he’s noticeably stronger. He has a lot more energy and his colour is so much better. He is generally healthier. It’s an excellent product.

Cork, Ireland.

Alflorex Review

I first tried Alflorex 12 months ago and it’s made a huge difference. I no longer have the pain and the bloating has gone down a lot

My energy is 100% and I’ve even started running at 63

Dublin, Ireland.


See for Yourself

Watch a short 2 min overview


Zenflore was featured on ITV Save Money:Good Health

Zenflore on ITV

Zenflore was featured on Save Money: Good Health. Find out more and watch again 

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Alflorex IBS Leaders | 8 people with digestive issues tried Alflorex for 8 weeks hear their stories here.

Alflorex Leaders

Eight people with digestive issues tried Alflorex for eight weeks to hear their stories here.

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Alimentary Health Group have conducted a new clinical study, which has just been published online in the American Journal of Gastroenterology.

New clinical study on 1714-Serenitas®

Professor Paul Enck and his group at University of Tübingen (Germany) and the Alimentary Health Group have conducted a new clinical study, which has just been published online in the American Journal of Gastroenterology.

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Feel the Difference

Try our 12 Week Programme and receive support through your journey

BUY 4 Weeks £24.95 BUY 12 WEEKS £49.95


Call the Careline Team

Our Careline team is here to answer any questions you have on any of our products. We welcome questions from the public and from healthcare professionals. If you have a question, please call us at the following numbers:

UK: 0330 057 8598 
Ireland 021 206 6012

Open: Monday to Friday 9am-5.30pm