For every day MAX

30 capsules


(ex. tax)
4.9/5 (27 reviews) Read the 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

See full ingredients list


Premium 50 billion maximum strength daily probiotic containing three of the most clinically trialled strains in the world: Lactobacillus acidophilus NCFM®, Bifidobacterium lactis HN019 & Bifidobacterium lactis BI-04®. Recommended for optimal support of gut health and digestion, as well as helping to maintain good immune health*.

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Probiotic Strains

  • Lactobacillus acidophilus NCFM®
  • Bifidobacterium lactis Bl-04®
  • Bifidobacterium lactis HN019
  • Product Description

  • How To Use

  • Ingredients

  • Help & Advice

  • Reviews

  • Delivery & Returns

  • Product Description

    Friendly bacteria expert Jen (Complementary Therapy BSc Hons) explains Optibac 'For every day MAX'

    Who is Optibac Probiotics ‘For every day MAX' for​?

    Ideal for those looking to support their digestion with a super high-strength, high-quality probiotic supplement.

    Key benefits

    • Each capsule contains 50 billion friendly bacteria, guaranteed until end of expiry.
    • Scientifically proven to survive stomach acidity and reach the gut alive.
    • Award-winning high-strength multistrain probiotic containing 3 extensively researched strains: Bifidobacterium lactis HN019, Bifidobacterium lactis Bl-04®, and Lactobacillus acidophilus NCFM® - thought to be the most researched strain of acidophilus in the world.
    • All three strains have been studied in numerous gold standard clinical trials for digestive health concerns, such as occasional bloating or constipation, as well as gut and immune health support*.
    • Complements your natural gut bacteria.
    • Easy to take on the go – no refrigeration required. Capsules can be opened and the contents taken alone.
    • Suitable for all from 4 years, including pregnant and breastfeeding women, vegans, vegetarians.
    • Recommended for daily use.
    • Free from FOS (Fructooligosaccharides) fibres, so may be suitable for those with IBS.
    • Gluten free, sugar free, no dairy and GMO free.
    • From the UK’s most trusted & recommended brand of friendly bacteria supplements. As determined in an independent survey of 1000 British women+.
    • Over 3000 Trustpilot brand reviews and an ‘excellent’ rating.

    Available to order in one pack size of 30 capsules.

    Billion Count

    Whilst it's not always necessary to take very high doses of probiotics - in some cases a strain can be sufficient at doses of just 1 billion CFU - if you are going to take a high strength probiotic supplement, then we recommend choosing one containing some of the best strains in the world.

    Some people do very well on a more powerful probiotic supplement, but research shows that it is still more important to look at the quality of the bacterial strains, before you look at the number of billions. The best probiotic supplements are transparent and always list the strains of bacteria, not just the species, because each strain has unique properties. This allows you to look at the research that supports each strain and enables you to choose the strains which have been researched for the health conditions you wish to support so are most suited to your needs.



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

  • How To Use

    Recommended use

    Food supplement suitable for adults and children (from 4 years upwards) with the following recommendations:

    • Take one capsule daily. If desired, or professionally directed, can be increased to two capsules a day.
    • For best results take daily and with food, preferably with breakfast and drink plenty of water with your course of probiotics.
    • For anyone unable to swallow capsules, the contents of the capsule can be mixed with a cold, non-acidic meal or beverage.
    • Do not exceed recommended daily dosage.


    'For every day MAX' does not require refrigeration. 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 and Kerry Beeson BSc (Nut. Med.) Nutritional Therapist.

    Can a probiotic be too strong?

    Probiotics are very safe supplements, and it’s not thought to be possible to ‘overdose’ on them: the human gut naturally contains trillions of micro-organisms, so the number of bacteria in a supplement is relatively small by comparison, and clinical trials have used doses up to 500 billion1. However, we’re all different with a unique gut microbiome, and some people do better on higher strength supplements, whereas others find they get the support they need from a lower dose.If you want to try a more powerful supplement but tend to be sensitive to new foods and supplements, then it’s best to start with a low dose and gradually increase. You can open all Optibac capsules and take half a dose if preferred.

    How do I choose the best probiotic for adults?

    With so many brands to choose from, it can be difficult to choose the probiotic supplement that’s right for you. We recommend looking for a probiotic which is guaranteed to reach the gut alive, contains well-researched strains, is shelf stable and does not need refrigerating. It is always good to choose a product with great customer reviews, but most importantly it should contain strains researched for the condition you’re trying to support.

    Is it OK to take a probiotic every day?

    Yes, it is safe and generally advisable to take probiotics daily. Probiotics colonise in the gut for a few weeks but research,2,4,5 suggests that the probiotic strains – along with their positive benefits – will disappear without regular supplementation, so it is a good idea to regularly support your microbiome. You can do this by including prebiotic-rich and fermented foods in your diet, but it is worth remembering that not all probiotics do the same thing in the body. Therefore, if you have a specific health condition you need to support, it is best to consume specific strains which have been shown to be helpful for your individual needs.

    Should you take probiotics on a full or empty stomach?

    In general, it’s best to take probiotics with the first meal of the day. There are concerns that stomach acid will damage delicate probiotic bacteria, and that taking them on an empty stomach will help. But at breakfast time, stomach acidity is at its most neutral, and there is a lag time (up to 30 minutes) between food consumption and stomach acid release. Taking probiotics with food has additional benefits: the food helps to buffer the effects of stomach acid, facilitate the passage of the probiotics through the stomach, and ensures that they are well mixed with the stomach contents as they pass into the small intestines.

    How long should you take probiotics for?

    This depends on why you are taking them: some people like to take specific strains at certain times, for example during pregnancy, when travelling abroad, for menstrual bloating, or during the winter flu season. However, if you have ongoing health conditions, or just want to give your gut or vaginal microbiome a daily boost of good bacteria, then take your supplements every day. There is no current research to suggest the body becomes dependent on probiotics, so if you just feel better when you take them, it is fine to take your probiotics on a long-term, ongoing basis.


    1. Pham M, Lemberg DA, Day AS. (2008) Probiotics: sorting the evidence from the myths. Med J Aust. Mar 3;188(5):304-8. PMID: 18312197.
    2. Mimura, T. et al. (2004). 'Once daily high dose probiotic therapy (VSL#3) for maintaining remission in recurrent or refractory pouchitis'. Gut, 53(1): 108-114
    3. Eskesen 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 abdominal discomfort: a randomised, double-blind, placebo-controlled, parallel-group trial. Br J Nutr; 114, 10: 1638-46.
    4. Morelli L et al., 2004. 'Utilisation of the intestinal tract as a delivery system for urogenital probiotics'. Journal of clinical gastroenterology; 38(6): 107-110
    5. Jacobsen et al., 1999. 'Screening of probiotic activities of 47 strains of Lactobacillus spp. by in vitro techniques and evaluation of the colonisation ability of 5 selected strains in humans'. Applied and Environmental Microbiology; 65 (11): 4949-4956


    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 and sight of children.

    This is a food supplement and is not intended to prevent, treat or diagnose any medical conditions. Food 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.

  • Ingredients

    Ingredients ​​​​for every day max supplement fact panel

    • Live cultures: Lactobacillus acidophilus NCFM®, Bifidobacterium lactis Bl-04®, Bifidobacterium lactis HN019
    • Vegetarian capsule: hydroxypropyl methylcellulose
    • Stabiliser: micro-crystalline cellulose
    • Anti-caking agents: vegetable magnesium stearate, silicon dioxide.

    Each capsule guarantees 50 billion live cultures.

    Suitable for vegetarian, vegan, dairy free, gluten free, yeast-free or soy free diets. GMO free. Free from artificial flavourings, colourings and preservatives typically found in other food & drinks containing probiotics. No chemicals or parabens. Sugar free. Suitable during pregnancy and during breastfeeding. 

  • 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 would highly recommend this excellent product which cleared up a chronic condition where other brands of probiotics and treatments did not. Brilliant, easy and worth every penny.

      Rosie Sprake - 9th March 2021

    • I have been taking this product for 2 weeks. I have IBS constipation, spasms and surprisingly I feel much better. Of course with a proper diet. I would like to ask if it can be taken for a long time. What other products might be useful?

      Aurora - 25th November 2020

    • Reached out to OptiBac for advice on which probiotic to take for Crohn's after a colonoscopy in order to support and repopulate the gut. Beverley, an OptiBac nutritional advisor, couldn't have been more helpful and sent over an extremely comprehensive, informative and personalised email. I ended up purchasing this 'Everyday Max' product alongside S. boulardii which work in complementary fashion to each other, and both have been brilliant. Could not recommend highly enough. Thank you!

      Pippa - 16th October 2020

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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 therefor 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 delivered within 4-10 working days.
    Free standard shipping on orders over $100.

    USA express shipping: $6.99

    We use DHL and orders are typically delivered within 1-3 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.

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