Bifido & Fibre Probiotics

30 sachets



(ex. tax)
4.8/5 (37 reviews) Read verified product reviews

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Free standard delivery on orders over $100

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Suitable for



Gluten free

Gluten free

During pregnancy

During pregnancy

Dairy free

Dairy free

GMO free

GMO free

During breastfeeding

During breastfeeding

See full ingredients list


Optibac Probiotics Bifido & Fibre combines the highly researched probiotic strain Bifidobacterium lactis BB-12® with 4g of prebiotic FOS fibers to increase natural gut bacteria, improve regularity and aid occasional constipation*.

bifidobacteria & fibre press

Probiotic Strains

  • Bifidobacterium lactis BB-12®

Added nutrients

  • Prebiotic FOS
  • Product Description

  • How To Use

  • Ingredients

  • Help & Advice

  • Reviews

  • Delivery & Returns

  • Product Description

    Bifidobacterium probiotic with FOS fibres

    For anyone looking to buy a natural option for supporting digestive health and regularity*. 

    Key benefits

    • Extensively researched – contains the renowned probiotic strain Bifidobacterium lactis BB-12®, which has been researched in thousands of people in gold standard clinical trials
    • Supports regular digestion – each of the synbiotic probiotic sachets contains 25 billion Bifidobacteria probiotic cultures and 4g of prebiotic Fructooligosaccharides (FOS), for a supplement which aids digestive health, including regularity and occasional constipation*
    • Scientifically proven – shown to survive stomach acidity and reach the gut alive to complement the natural gut bacteria
    • Provides 4g of prebiotic fibre – the International Scientific Association of Probiotics & Prebiotics (ISAPP) suggests a minimum daily intake of 3-5g of fermentable fibres, such as FOS, which increase the natural gut bacteria
    • Stimulates immunological responsesB. lactis BB-12® has been shown to stimulate immunological responses including immunoglobulins and cytokines*1
    • Easy to use – this probiotic 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.

    Product reviews


    Customer feedback collected via independent review platform Trustpilot. See more Bifido & Fibre reviews 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

    Dietary supplement suitable for adults and children (from 1 year 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 (77 °F) 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 option for regularity, suitable for everyone from the age of 1 year including children1, pregnant women2, and older people3. It contains 25 billion CFUs of the probiotic strain Bifidobacterium lactis BB-12®, 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 on any probiotic strain, where it was researched in 1,200 people and shown to improve bowel regularity4*. This high-quality strain is offered in a unique combination with 4g of FOS prebiotic fibers, which have also been shown to reduce bowel transit time5, making this a perfect supplement to support occasional constipation*.

    How many sachets should I take a day?

    The number of Bifido & Fibre sachets required to achieve the desired effect 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 respond. If you feel you would benefit from taking more, 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 require a higher amount initially, you may be able to reduce this after just a week or two, or once your regularity has improved. After this initial period of time, most people find 1 or 2 sachets each day to be effective to maintain the positive effects*. Equally, it’s fine to use the supplement on an ad hoc basis as required, or to take 1-4 sachets per day on an ongoing basis.

    Is it ok to take probiotic supplements every day?

    Probiotic supplements are generally considered very safe to take on a daily basis1; in fact most research recommends daily use. Probiotics are natural supplements and not a medication. They carry no risk of dependency and do not cause the bowel to become ‘lazy’.


    Probiotics 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 dietary supplement and is not intended to diagnose, treat, cure or prevent any disease. Dietary 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. 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
    5. 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

    Ingredients bifidobacteria & fibre supplement fact panel

    Prebiotic FOS (Fructooligosaccharides); Probiotic cultures: Bifidobacterium lactis BB-12®; fructose, silicon dioxide

    Each sachet guarantees 25 billion CFU micro-organisms + 4g prebiotic FOS fibers.


    • Vegetarian
    • Vegan
    • Gluten free
    • Dairy free
    • Flavorless
    • Suitable in pregnancy
    • Suitable during breastfeeding
    • Yeast free
    • GMO free
    • Free from artificial flavorings, colorings 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 email or click on the link below for our contact form

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  • Reviews

    Customer reviews

    • I discovered these at the Pregnancy & Baby fair in Dublin and I cant rate them highly enough. I suffer from IBS, with constipation being my main symptom. I was taking a different supplement previously from another brand - but didn't see any benefits from it. But this supplement has changed my life! It has completely restored my bowel movements and I have now even been able to reintroduce lactose into my diet, which was previously a huge trigger for me. 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 who has struggled with chronic constipation that does not respond to the usual "fiber and fluids" recommendation.

      Kimberly Case - 11th December 2021

      Verified Customer

    • I’ve struggled with IBS-C for years. I’ve reword everything, diet changes, over the counter & prescription laxatives, 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 with my chronic constipation and 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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  • Delivery & Returns

    USA Shipping

    Coronavirus Update

    We ship all USA orders from our warehouse in Hampshire in the UK. Due to the ongoing global pandemic many US, European and Worldwide postal routes are seeing increased transit times. Delivery times provided on this site are therefore a guide and not a guarantee. Express Services largely remain unaffected however these routes are typically subject to local tax and duties at customs.

    USA standard shipping: $4.99

    International postal order - typically deatched and delivered within 5-10 working days.
    Free standard shipping on orders over $100.

    USA express shipping: $6.99

    We use DHL and orders are typically dispatched and delivered within 2-5 working days.



    Good to know

    • We'll send you an email to confirm once your parcel has been dispatched.
    • For delivery queries, please email
    • We are unable to ship orders to PO boxes.
    • Product prices on this website are always shown in US dollars (USD $) and exclude tax - tax is not applicable as orders are fulfilled from the UK.

    Worldwide Delivery

    • We deliver to more than 50 countries.
    • Shipping is charged at cost - please note that duties may apply.
    • Please allow 3-7 working days for delivery within Europe and 5-12 days to all other destinations. Includes order tracking.  
    • If you are located within the United Kingdom or Europe, we recommended switching to our UK website.
    • International deliveries might currently take a little longer due to the global coronavirus situation. Please refer to the webpage of our international delivery provider DHL to confirm the number of days it takes to receive your order and whether they currently ship 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.
    • Long distance shipping and short-term exposure to high temperatures will not compromise the viability of our products. Customers living in very hot countries should store the products out of direct sunlight and refrigerate if the option is available.

    For more details regarding international orders, currency conversion and applicable tax for orders outside the USA, please take a look at our delivery FAQ.