£7.99 £19.99
Includes 20% VAT
Product rated 4.7 in 27 reviews

A 5 billion live cultures supplement with B. lactis BB-12® and 4g of FOS, for a source of natural fibre.

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

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What is it for?

Live cultures and FOS for natural fibre

Who is 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.

Which specific strain?

  • Bifidobacterium lactis BB-12®

OptiBac 'Bifidobacteria & fibre'

  • High quality, well researched live cultures of B. lactis BB-12® that are scientifically proven to reach the gut alive
  • Each sachet provides 5 billion live cultures and 4g of FOS (Fructooligosaccharides) per sachet, guaranteed until end of expiry
  • Bifidobacterium lactis BB-12® has seen extensive clinical research and is thought to be the world's most researched strain of Bifidobacterium
  • Does not require refrigeration, unlike many live cultures supplements
  • Suitable for infants (one year+), women during pregnancy, breastfeeding mothers, the elderly, vegans and vegetarians, and certified gluten free for those with coeliac disease or an intolerance
  • Take one sachet initially and up to four sachets per day if required, with plenty of water

OptiBac 'Bifidobacteria & fibre' has been created especially for those seeking a high-quality natural bacteria and fibre supplement. It contains Bifidobacterium lactis BB-12®, thought to be the most researched strain of the entire Bifidobacterium family, and 4g of FOS (fructooligosaccharides). Suggested for daily use, each capsule provides 5 billion live microorganisms that will survive through stomach acidity and bile salts and is guaranteed per capsule until end of expiry. OptiBac 'Bifidobacteria & fibre' is suitable for infants (one year+), women during pregnancy, vegans, vegetarians and is also gluten-free for those with celiac disease or those with an intolerance.

Available in two pack sizes of 10 or 30 sachets of live cultures. Each sachet provides a count of over 5 billion natural bacteria, guaranteed to the end of expiry. All OptiBac strains are thoroughly researched and documented, so you can be confident you're getting a high quality supplement.

It is important to note that this supplement, unlike many other live cultures products, does not require refrigeration due to improvements in freeze drying techniques and the strains within the product that are naturally robust to survive harsher conditions.

Note: Fructooligosaccharides may initially result in flatulence and / or bloating in some people. These side effects are temporary and should stop as the body adjusts. If side effects continue for 3-4 days, consider reducing the dosage.

Instructions For Use

Take 1 sachet initially and up to 4 sachets per day if required, with plenty of water.

  • Adults and children (one year and over): Take one sachet daily with food, preferably with breakfast when stomach acidity is at its most neutral.
  • For ongoing use: one sachet will often suffice but more can be taken as desired, or as professionally instructed.
  • Shake the sachet, then slowly sprinkle contents into a glass of water and vigorously swirl to dissolve fully.
  • Do not use a spoon as this may cause the sachet contents to clump. Drink plenty of water with this supplement.
  • Do not exceed recommended daily dosage.

Food supplements should not be used as a substitute for a healthy diet and lifestyle. Those with serious medical conditions should consult their doctor before use.


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 e.g. those who are severely immunosuppressed, have pancreatitis, are in the ICU, have melaena, have a central venous catheter, infants with short bowel syndrome, or patients with open wounds following major surgery; unless under a doctor's care.


United Kingdom

Standard Delivery
Free over £100. Discount automatically applied at checkout when you spend £100.
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.

Next Day UK Delivery *
Order before 3pm from Monday – Friday and select option ‘next day delivery’ at the checkout. Signature required.
* Excludes: Channel Islands, Isle of Man, Isle of Wight, Northern Irish postcodes BT18 & upwards, Scottish borders and offshore, and a small number of remote mainland destinations as determined by our delivery courier.

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.


We deliver to more than 50 countries and offer free delivery on orders over £100.
For more details, please check out our shipping & delivery FAQ.


We are a UK-based company and product prices on our website are shown in pounds sterling (GBP £).
If you are purchasing from abroad, conversion to your local currency will be made by your bank on the day of purchase.
We recommend using an online currency conversion tool if you'd like an estimate, though do bear in mind that the rates displayed may be subject to change before your bank processes your transaction.

  • I've suffered with diarrhoea for years. I've had all sorts of tests but nothing found. GP suggested Fibogel but it's full of sweetener which would make it worse. The Pharmacy suggested Optibac and I can't believe the difference. I no longer spend so much time in the loo. Thank you so much. I can now get on with my life

  • 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

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