Bifido & Fibre

30 sachets


(inc. VAT)
4.8/5 (35 reviews) Read verified product reviews

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FREE UK delivery on orders over £40.

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Gluten free

Gluten free

During pregnancy

During pregnancy

No dairy

No dairy

During breastfeeding

During breastfeeding

See full ingredients list

Who is it for?

Optibac Bifido & Fibre is a high quality supplement combining 25 billion live cultures of the scientifically proven Bifidobacterium lactis BB-12®. Also with 4g of FOS fibres added to increase your natural gut bacteria.

bifidobacteria & fibre press

Optibac Probiotics Strains

  • Bifidobacterium lactis BB-12®
  • Product Description

  • How To Use

  • Ingredients

  • Help & Advice

  • Reviews

  • Delivery & Returns

  • Product Description

    Who is Optibac Bifido & Fibre for​?

    For anyone looking to buy a friendly bacteria supplement with FOS for natural fibre.

    Key benefits

    • Each sachet provides 25 billion friendly bacteria + 4g of Fructooligosaccharide (FOS) fibres
    • The billions count is guaranteed until end of expiry
    • Scientifically proven to pass through stomach acidity and survive to reach the gut
    • Made with natural ingredients and does not cause dependency
    • Bifido & Fibre is a synbiotic, which means it combines both live cultures and Fructoologiosaccharides (FOS) fibres
    • Fructooligosaccharide (FOS) fibres increase your levels of natural gut bacteria, in particular Bifidobacteria
    • Bifidobacterium lactis BB-12® has been shown to stimulate immunological responses, such as immunoglobulins and cytokines1
    • The International Scientific Association of Probiotics & Prebiotics (ISAPP) suggests a minimum daily intake of 3-5g of fermentable fibres, such as FOS fibres. One sachet of Bifido & Fibre provides 4g of FOS
    • Complements your natural gut bacteria
    • Recommended for daily use or as needed
    • Free from artificial flavourings or colourings that may be found in other food & drinks containing live cultures
    • Easy to take on the go – no refrigeration required
    • From the UK’s most trusted & recommended brand of friendly bacteria supplements. As determined in an independent survey of 1000 British women+.

    Available in two pack sizes of 10 or 30 sachets.

    FOS may initially result in flatulence in some people. These effects are temporary and should stop as the body adjusts. If effects continue for 3-4 days, consider reducing the dosage.

    Now dispatching in our new look!

    We are introducing new, eco-conscious packaging this year, and the new designs will update gradually from product to product to minimise any waste. Please bear with us as you may receive orders with both current and new packaging over the coming months.  We hope you like the new look! 

    Update May 2021: This supplement was previously called OptiBac 'Bifidobacteria & fibre' in the EU and 'For maintaining regularity' in the rest of world. It's exactly the same great formula, which previously advertised 5 billion live cultures per sachet but has now been updated to 25 billion live cultures per sachet (based on latest stability data). Existing customers can continue to take it just as before! 



    Customer feedback collected via independent review platform Trustpilot. See 'Reviews' tab for more customer opinions collected via our own website.


    1. Jungerson, M. et al., (2014) The Science behind the Probiotic Strain Bifidobacterium animalis subsp. lactis BB-12®. Microorganisms. 2, 92-110.

  • How To Use

    Recommended use

    Food supplement suitable for adults and children (from 12 months onwards) with the following recommendations:

    • Initial use: Take 1 sachet (and up to 4 sachets if required) daily with food.
    • Ongoing use: 1 sachet will often suffice but more can be taken as desired or as professionally directed.
    • It is strongly recommended to drink plenty of water with this supplement.
    • Shake the sachet, then slowly sprinkle contents into a glass of water and vigorously swirl to dissolve fully.
    • Do not use a spoon to stir as this may cause the sachet contents to clump.
    • Do not exceed recommended daily dosage.


    • Store in a cool, dry place below 25°C and out of direct sunlight.

    Customer Questions

    All questions answered by probiotic experts Dr Kate Stephens PhD (Food and Microbial Sciences) BSc(Hons) Medical Microbiology Kerry Beeson BSc (Nut. Med.) Nutritional Therapist.

    What makes Bifido & Fibre unique?

    Bifido & Fibre is a safe, gentle supplement, suitable for use by everyone over the age of 1 year including children1, pregnant women2, and older people3.  Bifido & Fibre contains 25 billion CFU of the friendly bacteria strain Bifidobacterium lactis BB-12®, an extensively researched strain proven to reach the gut alive4. In fact, this strain of friendly bacteria is thought to be the most highly researched strain in the entire Bifidobacteria family! It has been extensively researched in numerous clinical trials, including one of the largest clinical trials ever conducted on any friendly bacteria strain, where it was researched in 1,200 people5. In Bifido & Fibre, this strain is offered in a unique combination with 4g of fructo-oligosaccharides (FOS), a natural source of fibre.

    How many sachets should I take a day?

    The most appropriate way to take Bifido & Fibre can vary from person to person, so may require some initial ‘trial and error’. It is recommended to start with one sachet a day and see how you get on. The number of sachets taken can be increased (one sachet at a time), up to a maximum of 4 sachets per day spread over the course of the day. This supplement can be taken with or without food and many people like to take a sachet with each meal, and one before bedtime, though you can see what suits you best.

    If you decide to take a higher number of sachets initially, you may be able to reduce after just a week or two to just 1 or 2 sachets each day. Equally, it’s fine to use the supplement on an ad hoc basis as desired, or to take 1-4 sachets per day on an ongoing basis.

    Is it ok to take friendly bacteria supplements every day?

    Friendly bacteria supplements are generally considered very safe to take on a daily basis1. They are natural supplements and not a medication. Furthermore, the specific strain of bacteria in Bifido & Fibre (Bifidobacterium lactis BB-12®) carries no risk of dependency and does not cause the bowel to become ‘lazy’.


    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. Keep out of reach of children.

    This is a food supplement and is not intended to diagnose, treat, cure or prevent any disease. Probiotic supplements should not be used as a substitute for a healthy diet and lifestyle. If you are taking any medications or have a serious medical condition, consult a doctor before use. Optibac supplements will not cause dependency and may be used on an ongoing basis.


    1. Saavedra et al. 2004. Long-term consumption of infant formulas containing live probiotic bacteria: tolerance and safety. The American journal of clinical nutrition. 9:261–7.
    2. Mirghafourvand Mojgan et al (2016), “The Effect of Probiotic Yogurt on Constipation in Pregnant Women: A Randomized Controlled Clinical Trial.” Iranian Red Crescent Medical Journal, Nov; 18(11): e39870 PMC. Web.
    3. Pitkala, K.H et al. (2007), ‘Fermented cereal with specific Bifidobacteria normalizes bowel movements in elderly nursing home residents. A randomized, controlled trial’, Journal of Nutritional Health and Aging, 11(4):305-311.
    4. Uchida et al. (2005), ‘Effect of fermented milk containing Bifidobacterium lactis BB-12® on stool frequency, defecation, fecal microbiota and safety of excessive ingestion in healthy female students’, Journal of Nutritional Food, 8(1):39-51
    5. Eskesen, D. et al. (2015), ‘Effect of the probiotic strain Bifidobacterium animalis subsp. lactis BB-12® on defecation frequency in healthy subjects with low defecation frequency and abnormal discomfort: a randomised, double-blind, placebo-controlled, parallel-group trial’, British Journal of Nutrition, Nov 28: 114(10) :1638–1646
    6. Da Silva Souza, D. et al. (2018, Nov). Randomized, Double-Blind, Placebo-Controlled Parallel Clinical Trial Assessing the Effect of Fructooligosaccharides in Infants with Constipation. J. Nutrients. 2018 Nov; 10(11): 1602. Published online 2018 Nov 1. doi: 10.3390/nu10111602

  • Ingredients


    • Fructooligosaccharides (FOS 4g)
    • Live cultures: Bifidobacterium lactis BB-12®, fructose (standardised culture)
    • Anti-caking agent: silicon dioxide

    Each sachet guarantees 25 billion micro-organisms + 4g FOS fibres.


    • Vegetarian
    • Vegan
    • Gluten free
    • No dairy
    • Flavourless
    • Suitable in pregnancy
    • Suitable during breastfeeding
    • Yeast free
    • GMO free
    • Free from artificial flavourings, colourings and preservatives
    • No chemicals or parabens
    • Not suitable for FODMAP diets
  • Help & Advice

    Talk to our experts

    If you have a specific question or need some advice on which product to choose please contact our Nutrition Team on +44 (0) 1264 318 881 or click on the link below for our contact form.

    Need help choosing a product?
  • Reviews

    Customer reviews

    • I’ve reword everything, diet changes, EVERYTHING. Nothing helped. I finally decided to try a probiotic. I put it off bc i hate taking pills but i found this powder one from optibac and was so excited. I mix it with apple juice and take it everyday. It’s been 2 months and now i FINALLY have a bowel movement EVERY DAY! I hardly leave reviews but this is the first and only product that has helped. Saying I’m ecstatic is an understatement. I’be been telling everyone i can about this miracle product 🤍

      Bailey - 23rd May 2021

    • I have been taking these probiotics for a few months now. I have them in a smoothie every morning and sometimes on occasion give them a miss. They just became a part of my daily routine. I recently ran out of my supply so whilst I waited for them to be delivered I noticed a huge difference in frequency, digestion and other symptoms. I honestly never realised how much these probiotics help ease my symptoms and I would now be absolutely lost without them. They may not work for everyone but they are definitely worth a try if you’re all out of options. They were something I stumbled across when I was looking for my solution so definitely worth a try!

      Maddie - 4th October 2020

    • Oh my goodness these are amazing!! Have tried them before but only for a couple of days and stopped as they didn't work. But kept persevering and after about 6/7 days I went but just thought that would be it but I am still taking them and am going every single day now sometimes twice which is amazing considering that I only used to go once a week at the most. I have stopped taking laxatives now . If you keep on taking it you will definitely see results but I know for some people the time scale will be different.

      Julia - 25th June 2020

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  • Delivery & Returns


    Free UK Delivery over £40 (Free Delivery on all orders 26th November - 29th November 2021)

    Free standard UK delivery is automatically applied at the checkout when you spend £40.

    Standard 2nd class (Tracked): £2.50

    Allow 4-10 working days (Monday - Friday) for delivery; no deliveries on Saturdays

    1st class (Tracked): £3.95

    Allow 1-3 working days (Monday - Friday) for delivery; no deliveries on Saturdays

    Express Next Day (Tracked): £6.50

    Order before 2pm for guaranteed next working day delivery to most of the UK*. Orders placed on Friday will be delivered on Monday (next working day). Requires signature.
    *Express delivery may exclude the 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. 

    Good to know

    • We'll send you an email to confirm once your parcel has been dispatched.
    • For delivery queries, please call us on +44 (0)1264 339 770 or email
    • Orders placed before 2pm will be dispatched on the same working day.
    • Delivery within the UK 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.



    International Delivery

    We offer an excellent worldwide delivery service. For more details, please take a look at our delivery FAQ.

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