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Available in Boots, Lloyds Pharmacy and selected pharmacies nationwide


Alflorex Capsules
The #1 recommended live culture by US Gastroenterologists 

The live culture in Alflorex, 35624®, has been clinically tested by leading Scientists and Gastroenterologists in people with IBS*. These trials showed it reduces all of the following:

  • Bloating & gas
  • Abdominal Pain
  • Unpredictable bowel movements

This naturally occurring 'good' bacterial strain is part of the family of bacteria given by mothers to babies at birth. Suitable for those on a low FODMAP diet. No refrigeration required.

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Alflorex Straws
Easy to use straws for getting your daily Alflorex

The same live culture as Alflorex capsules in a convenient straw. Just use the straw to drink from a glass of water or milk. 

  • No need to refrigerate 
  • Gluten and lactose free
  • For adults & children over 3 years  



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"This kind of bloating is all consuming...I'd have sizes 8 - 16 in my wardrobe"- Scarlett London. 

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Our Story

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 improvement they make to human gut health.

When these live 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.


Natural science, ready to work for you

All of our products contain live 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 alive 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.  

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 work optimally or that different cultures will even complement each other. Different cultures behave in different ways and may even have competing effects. Cultures of animal origin are not native to the human gut so we do not add them.

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 investing to find the best bacterial culture for each specific gut condition. We then put each through a rigorous series of tests, culminating in clinical trials in the UK and Europe.
We produce a pure formulation, with no added bulk yoghurt or animal cultures, to provide a PrecisionBiotic® product that we can guarantee and that clinicians can recommend. 

We also guarantee that the number of bacteria is the optimal amount for each PrecisionBiotic and the human gut. 

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What our customers say about PrecisionBiotics products

"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 Alflorex and I was so impressed that I just kept taking them!"


Scarlett London Blog

“I felt tired all the time. My stomach felt very bloated, it started to make me very self-conscious and then I found Alflorex. I started to feel less tired all the time, my bloating had immediately started to go away and ease off and it really started to make a difference for me.”



Sanoobar PatelSanoobar Unscripted Blog

"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 Presenter

See what our Customers are saying about us

I was missing so many days at work, the diarrhoea was coming at least 5 times a week. I went to the GP a lot and he always prescribed loperamide and anti spasmodics. These would work for a while then I would go back to having diarrhoea again. 
I spent a lot of my money on all different medications and supplements like acidophilus and vitamins. They would help for a while then stop working. I changed my diet and this worked for a while then I’d have a flare up again and it be as bad as before. This went on for about 8 years. 

When I read about Alflorex I thought it would be like the others. I’m on it about 5 months now and everything has changed for me. Since I started taking Alflorex I’ve only had diarrhoea twice. I can actually eat out and eat what I want. I love Mexican food! The worry about the diarrhoea coming has disappeared.”

Nikki, South Wales

“I suffered from terrible bloating. I would put an outfit on in the morning and by the evening it wouldn’t fit. I looked like I was 8 months pregnant with this big belly in front of me. We went on holidays last year and I couldn’t go out in the evenings because my clothes just wouldn’t fit. The GP just said that I had to deal with it. I tried everything I could buy in the pharmacy or healthfood shop. All the bloating medication; none of it worked. Nothing I did reduced the bloating. 

6 months ago I heard about Alflorex and I’ve been on it since. I can’t believe the difference it has made. Within a couple of weeks I could see it. People keep saying to me that I’ve lost a lot of weight but I haven’t. Bread used to make me very bloated but I can eat it now. I can buy smaller sizes when I’m clothes shopping. I feel a 100 times better in myself and I can go out, wear my clothes and feel great.”

Carol, West Sussex

Call our Careline

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 healthcare professionals

If you have a question, please call us on

UK:       0330 057 8598

Ireland: 021 206 6012

Or email us by filling out the form on the right.

Thank you.

*1) Whorwell et. al. July 2006, American Journal of Gastroenterology and 2) O’Mahoney et. al. March 2005, Gastroenterology.

(2) Among gastroenterologists who recommended a brand of probiotic in AlphaImpactRx 2008–2017 surveys. Among doctors who recommended a brand of probiotic in AlphaImpactRx 2017 survey.

(3) Irish Pharmacy News awards 2015, 2016, 2017 and 2018.