Bifido & Fibre

30 sachets |up to 1 month's supply

4.8/5 (37 reviews) Read verified product reviews
4.8/5 (37 reviews) Read verified product reviews
Dr Sasivimol Ahmed PhD, PG Dip (Personalised Nutrition), BSc (Food Science)
This fantastic supplement contains Bifidobacterium lactis BB-12®, one of the most researched strains in the world.
Dr Sasivimol Ahmed
Dr Sasivimol Ahmed PhD, PG Dip (Personalised Nutrition), BSc (Food Science)

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.

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FREE UK delivery on orders over £40.

UK express - Monday to Friday delivery.

See our Delivery & Returns for more information.

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  • Vegan


  • No dairy

    No dairy

  • Gluten free

    Gluten free

  • Soy free

    Soy free

  • During pregnancy

    During pregnancy

Key benefits

Bifidobacterium friendly bacteria with FOS fibres

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

  • Extensively researched Contains the renowned live cultures strain Bifidobacterium lactis BB-12®, which has been researched in thousands of people in gold standard clinical trials 
  • Friendly bacteria and FOS Each of the synbiotic friendly bacteria sachets contains 25 billion Bifidobacteria live cultures to complement the natural gut bacteria combined with 4g of Fructooligosaccharide (FOS) fibres to increase gut bacteria 
  • Provides recommended daily intake of fibre The International Scientific Association of Probiotics & Prebiotics (ISAPP) suggests a minimum daily intake of 3-5g of fermentable fibres such as FOS
  • Scientifically proven Shown to survive stomach acidity and reach the gut alive
  • Specific strain action B. lactis BB-12® has been shown to stimulate immunological responses including immunoglobulins and cytokines1
  • Easy to use This friendly bacteria powder can be taken daily or as required, mixed into cool, non-acidic food or drink, with no refrigeration required 
  • A more natural option Made using natural ingredients and free from artificial flavourings or colourings often found in other food & drinks containing live cultures; does not cause dependency 


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.

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

Optibac Probiotics strains

  • Bifidobacterium lactis BB-12®

Added nutrients

  • FOS fibres
See full ingredients list

Complements gut bacteria


General digestive

Customer reviews

4.8/5 (37 reviews)
  • I discovered these at the Pregnancy & Baby fair in Dublin and I can’t rate them highly enough. This supplement has changed my life! I couldn't recommend it more.

    Claire- 19th May 2022

  • I began using Optibac Bifido & Fibre a couple months ago. The results have been unlike anything I have used in the past. I have struggled with sluggish bowels for over a decade. Increasing my fiber intake just usually results in more pain and harder stools, despite consuming nearly a gallon of fluid per day. Since taking Optibac Bifido & Fibre, I am experiencing a more definite urge to go to the toilet, better stool consistency, and more complete evacuation. At the beginning, I also experienced some gas, but I took this as a good sign that real work was being done in my intestines. I highly recommend this product to anyone that does not respond to the usual "fiber and fluids" recommendation.

    Kimberly Case- 11th December 2021

  • 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

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Help & advice

Speak to our team of experts (nutritionists, microbiologists and nutritional therapists) any time for free advice, with absolutely no obligation to buy.

Camilla Gray
Camilla Gray DipCNM Nutritional Therapist

Why choose us?

We are the UK's most trusted & recommended brand of friendly bacteria supplements.

† As determined in an independent survey of 1000 British women.

  • How to use

  • Ingredients

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  • Delivery & returns

  • 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.


    *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.

    Gut health supplements are not intended to prevent, treat or diagnose any medical conditions. If taking probiotic supplements for gut health, note that these should not be used as a substitute for a varied and balanced diet and a healthy 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.

  • Ingredients


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

    Each sachet guarantees 25 billion live cultures + 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
    Format Sachet
    No. Live Cultures 25 billion
    Added Ingredients FOS Fibres
    Recommended Use 1 sachet daily
    Age Range Adult
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  • Delivery & returns

    UK Delivery

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

    Standard 2nd class: £2.50
    Allow 4-10 working days (Monday - Friday) for delivery 

    1st class: £3.95
    Allow 1-3 working days (Monday - Friday) for delivery 

    Express Next Day (Tracked): £6.95 (Dispatching Friday 30th December)
    Order before 2pm for 1-2 working day delivery to most of the UK*. Orders placed on Friday will be delivered on Monday (next working day). Requires signature.

    Shipments will be dispatched via DHL or FedEx, the service will be selected depending on the delivery location.

    *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 are typically 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.


    If you have changed your mind, you can return goods, at your cost, unopened within 14 days for refund or exchange, this does not affect your statutory rights.

Customer Questions

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

Optibac Bifido & Fibre can be taken with or without food, on an occasional or ongoing daily basis. Daily intake can vary for each person, depending on how you respond or if you're taking fibre in other supplements for constipation. Start with one sachet a day and increase (a sachet at a time), up to a maximum of 4 sachets, spread over the day.

Friendly bacteria supplements are natural - they are not medications and are considered safe to take on a daily basis with very few exceptions*. Live cultures carry no risk of dependency and do not cause the bowel to become ‘lazy’. 

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.
Read More

Optibac Bifido & Fibre is a natural supplement, safe for use by everyone, including children, pregnant women, and older people (1,2,3). It contains 25 billion CFU of the friendly bacteria strain Bifidobacterium lactis BB-12®, proven to reach the gut alive(4) and thought to be the most highly researched strain in the entire Bifidobacterium family(5)! In Bifido & Fibre, this strain is offered in a unique combination with 4g of fructo-oligosaccharides (FOS), a natural source of fibre.

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
Read More

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