£7.99 £19.99
Includes 20% VAT
Product rated 4.7 in 26 reviews

'Bifidobacteria & fibre' from OptiBac is a live cultures supplement which is high in fibre. With the extensively researched strain, Bifidobacterium lactis BB-12.

Vegetarian Vegetarian
No Dairy No Dairy
No Gluten No Gluten
Suitable during Pregnancy Suitable during Pregnancy
Vegan Vegan

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What's it for?

Live cultures with Fructooligosaccharides (FOS) fibres.

Who's it for?

For anyone, from 1 year onwards, who is seeking a natural option.

Each sachet:

Provides 5 billion live cultures + 4g of FOS fibres, guaranteed until end of expiry.

OptiBac 'Bifidobacteria & fibre'

'Bifidobacteria & fibre' is a natural supplement containing carefully selected microorganisms and fibres. Bifidobacterium lactis BB-12® has seen extensive scientific and clinical research, and is thought to be the world's most researched strain of the entire family of Bifidobacteria. What's more this high quality strain is scientifically proven to survive stomach acidity and biliary salts to reach the gut alive. The ingredient Fructooligosaccharide (FOS), makes this product naturally high in fibre. FOS is a soluble fibre which may act as a food source for the body's natural bacteria, and as roughage in the bowels.

OptiBac 'Bifidobacteria & fibre' can be taken once a day for ongoing maintenance; or as and when desired, in which case we recommend taking up to 4 sachets a day.

Thanks to the high amount of natural fibre in this supplement, it may be especially suitable for those looking to maintain regular bowel movements.

'Bifidobacteria & fibre' is a safe and gentle food supplement. It is appropriate for long-term use, can be taken by infants from 1 year and up, and is gentle enough for pregnant & breastfeeding mothers, as well as the elderly.

More about 'Bifidobacteria & fibre'

Bifidobacterium lactis BB-12® is a type of microorganism, of natural bacteria, also known as live cultures. Fructooligosaccharides is often referred to as a 'prebiotic' and/or a soluble fibre, and is thought to be the food source for the body's natural bacteria; they can be found in certain foods such as Jerusalem artichokes, leeks & onions.

Note: The high dose of fibres in this supplement, Fructooligosaccharides, may initially result in flatulence and/or bloating in some people. This is a positive sign that the friendly bacteria in your body are being stimulated, and side-effects should soon cease. If these side effects do continue for more than 3 - 4 days, consider reducing your intake of 'Bifidobacteria & fibre' before gradually building up again.

Bifidobacterium lactis BB-12® from OptiBac is likely the most researched lactis strain in the world.

B. lactis BB-12®

More about OptiBac

As well as ongoing scientific trials and routine quality tests, we have a steady flow of trustworthy, encouraging feedback from our customers. Read our reviews below, and find out how we collect them. If these don't get you going, we don't know what will!

Please note: As of October 2013, This product has changed name to 'Bifidobacteria & fibre' in the EU. The ingredients remain the same.


For adults and children (from 1 year and over:

  • Take one sachet initially, and up to four sachets a day if required, or as professionally directed.
  • For ongoing use one sachet daily will often suffice, although more can be taken as desired.
  • Dissolve in water, mix with food or pour directly into your mouth.

    Drink plenty of water with this supplement. Ideally avoid mixing with hot foods or fluids, or acidic drinks such as orange juice.


Like the rest of the OptiBac range, 'Bifidobacteria & fibre' does not require refrigeration.

Store out of direct sunlight.


Live cultures are not recommended for those with serious medical conditions eg. those who are severely immunosuppressed, have pancreatitis, are in the ICU, have melaena, have a central venous catheter, infants with short bowel syndrome, or to patients with open wounds following major surgery; unless under a doctor's care. Furthermore, pregnant or breastfeeding women should consult their doctor before taking Saccharomyces boulardii or 'For travelling abroad'.

Nutritional Information

Frequently Asked Questions

You can find more of our frequently asked questions on our FAQ page.


Delivery Options


As we are an UK-based company, the product prices on our website will always be shown in pounds sterling (GBP £). As currency exchange rates fluctuate on a daily basis, the conversion to local currency will be made by your bank on the day of purchase. Check out today's currency conversion rates using a search engine and an appropriate currency conversion tool, though do bear in mind that the rates displayed may be subject to change before your bank processes your transaction.

Next Day UK Delivery 

Order before 3pm from Monday – Friday and select option ‘next day delivery’ at the checkout for your order to arrive the next day.

Next Day: £6 - guaranteed next-working-day delivery to most of the UK* if you order by 3pm Monday to Friday (requires signature)

*excludes: Channel Islands, Herm Island, Isle of Man, Isle of Wight, Northern Irish postcodes BT18 & upwards, Sark, Scottish borders and offshore, and a small number of remote mainland destinations as determined by our delivery courier

UK Delivery 

UK delivery is free when you spend £100. The delivery discount is automatically applied at the checkout.

Once your parcel has been collected from our warehouse, we will send you a confirmation email to let you know that the parcel has been dispatched. For any further delivery queries, please call us on 01264 363 193 or email [email protected].

Orders placed before 3pm will be dispatched on the same working day.
Orders placed after this time will be dispatched the following working day.

Standard: £1.75 - please allow 4-7 days for delivery
First Class: £2.50 - please allow 1-3 days for delivery

Delivery within the United Kingdom and Northern Ireland has a fixed price, regardless of the size and weight of your order. Delivery times are estimates and not guaranteed unless otherwise stated.


We deliver to more than 50 countries and offer free delivery on orders over £100. The delivery discount is automatically applied at the checkout. Please see International Delivery Coverage below to find out if we deliver to your country.

Most international delivery prices are dependent on the size and weight of your order and where it is being sent. You'll be shown the final price of shipping in the checkout, before payment, once we have your address and order details. The main exception to this is delivery to EU countries using our International Express Courier service. This has a fixed delivery cost for each country, regardless of the size of your order.

  • Life change - constipation

    According to my case, I decided to share my story a little more detailed (still as short as possible, because I could fulfil few pages , haha). But for those who just want a short and straight review/answer - Yes, Optibac BB-12 works 100%, go for it!

    So let’s start from the beginning. Since I am aware of myself (12 years suppose), I can remember my problems with constipation. At that time, I had maybe 2 or 1 bowel movements per week. My stool was also more or less hard and dry. I have never had any problems with my "general" health, never being sick, never had consumed any of antibiotics, the only BIGGEST problem was always DIGESTION and SKIN problems (dermatitis, eczema) and later irregular period. My mother also has the same digestion problems, since she remembered. Because we get bacteria from our mother trough birth, it’s obviously I got her (no) diversity of bacteria responsible for digestion. Anyways, I was somehow struggling with that issue in my life. Years ago it was hard to discover anything, I was too young and not so much literature was available or research done. Let’s move on in my life and check past 2-3 years (I am 31 years old now - by the way). I was never eating unhealthy (i know people have different definition of this term) food in my life. But let’s say on my menu was always a lot of raw vegetables, fruit (healthy amounts, not too much sweet one), meat, healthy fats, fibers, little carbohydrates, no wheat.

    I think last 5 years I was researching very actively (on internet and everywhere else) what could be a reason or issues for my constipation, how can I heal myself…. I know my body very well, I can also listen to it what it says and how it behaves. Some more details about my lifestyle: In last 3 years my diet became very strict, because I was doing professionals fitness thing. But at that time, I thought, ohh I am already heavily constipated, so it can’t get worse…. But that is the thing which actually happened. Last year it was the most horrible year. I didn't know what to do anymore how to relieve my constipation. Also my hormones have been drastically changed because being constipated, and my body not functioning proper way. Juts giving you an example: can you imagine forest, jungle, without trees? No oxygen, no life, just area where forest is supposed to grow and be alive? That forest is my guts, they are there but dead, doing nothing they are made for. Digestive tract without bacteria which would push food forward and collaborate in extracting healthy things for my body…

    Every webpage which was checked about constipation, was mentioning just a lots of water, enough fibers, healthy food, which definitely didn't help for me, even natural or chemical laxatives barely helped. Prunes, fibers, etc. obviously made me even worse. Why? Because in my gut there was no mechanism (bacteria) to move and process anything. So I felt even worse, because this things were just bulking and rotting inside me. You don't want to know how horrible feeling in general this is, when food is stuck inside you. Physically and mentally!!!! But the interesting thing is, that all literature I was checking - with key word constipation, it wasn't mentioning gut flora, healthy bacteria. Even I am confused now, how the hell I didn't research that before??? It is so logical. Last few months I was thinking, hmmm, my gut flora has to be destroyed, because nothing is happening in my guts. No sound, no movement. And then it came MAGICAL day, when universe, destiny, god ( whatever you believe in) led me to PROBIOTICS. Immediately I knew - THIS IS IT! I really want to shorten my story, haha…

    Therefore my research of probiotic field started. How actually microbiota works, different types of probiotics and finally path led me to Optibac. I have to admit, immediately when I discovered all that, I went to buy probiotics which were the best in our market and available that day. Because I knew my gut flora is completely destroyed and the more good bacteria I get in my body the better. At the same time I have ordered Optibac online, because this Bifidobacterium BB-12, is which will help the most in my case. Already when taking other probiotics (1 week before Optibac), I could see changes, especially in my hormones and skin. And the first dosage of probiotics (first day) it made sound in my gut!!!! You know, I didn't hear my guts for 10 years probably moving or doing any sound?! That was the moment I started to smile and being happy cause I could hear sound and I definitely knew I am on the right track.

    But when starting to take BB12 (already taking them 10 days), there was enormous change in digestion. I have bowel movement EVERY day! Of course there is bloating and gases present (mostly first week), which is natural and a sign, your gut is alive and doing something good for your body! So people please, do not complain about unnecessary things in reviews, side effects, because you should be happy your gut is showing signs of life - your forest is alive, so appreciate that! Take a look over whole spectre of your situation, not just “bad” effects.

    I can’t even describe how HAPPY I am and how big change in my life this is for me, just believable but unbelievable =) Optibac team, I really admire your work, dedication, working on these wonderful bacteria with all your heart! Thank you for BB-12, which is not available by any other company (at least I didn’t find it). You made my life LIVELY again =) Will definitely try also another products of Optibac, which I do not even doubt they would work. It took me some time to write this review and share my story, but I really wanted to share at least basic parts, because I know how horrible my problem WAS. Maybe somebody can get some new idea, relate or find better solution for him/herself.

    Optibac will definitely be a healthy companion in my future life. Keep on doing the best job Optibac! Cheers :D

  • Good

    Prata di Pordenone
  • These have been a godsend to me. I feel so much better and have so much more energy. I also have stopped farting as much which is a nightmare especially whilst at work, they were most unpleasant. I... Read more

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