For every day EXTRA Strength

90 capsules



(ex. tax)
4.8/5 (85 reviews) Read the product reviews

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Suitable for

During pregnancy

During pregnancy

Gluten free

Gluten free

Dairy free

Dairy free





During breastfeeding

During breastfeeding


OptiBac Probiotics 'For every day EXTRA Strength' is a premium, 20 billion CFU, high-strength, multi-strain probiotic supplement. Contains Lactobacillus acidophilus NCFM®, considered the most researched acidophilus strain in the world. Recommended for optimal support of digestive and immune health*. 

For every day Extra Strength won Rude Health Awards

Probiotic strains & ingredients

  • Lactobacillus acidophilus NCFM®
  • Lactobacillus paracasei Lpc-37®
  • Bifidobacterium lactis Bi-07®
  • Bifidobacterium lactis Bl-04®
  • Product description

  • How to use

  • Ingredients

  • Help & advice

  • Reviews

  • Product description

    Registered Nutritionist Naomi (ANutr) explains OptiBac 'For every day EXTRA Strength'

    Who is OptiBac Probiotics 'For every day EXTRA Strength' for​?

    An advanced probiotic supplement for adults; suitable for vegans, vegetarians, and gluten-free or dairy-free diets. Recommended for optimal support of the digestive system, gut and immune health*.

    Key benefits

    • Trusted, multi-strain probiotic supplement.
    • The strains in this supplement have been collectively studied in approximately 70 clinical trials and have demonstrated efficacy in supporting gut health*.
    • These probiotic strains have been trialled and shown to support immune health*.
    • Extensively researched for various digestive health concerns, including occasional bloating*.
    • Lactobacillus and Bifidobacteria naturally occur in the digestive tract.
    • This product is designed to provide bacteria that are suited to the upper intestine (Lactobacillus species: L. acidophilus NCFM® and L. paracasei Lpc-37®) and Bifidobacterium species, which are suited to the lower intestinal tract.
    • Complements the flora naturally present in your gut*.
    • Specially formulated to help replenish good bacteria in the gut*.
    • Highest quality standards - subject to rigorous laboratory testing to ensure consistent quality and safety.
    • Free from prebiotics such as FOS (Fructooligosaccharides), so may be suitable for those with IBS.
    • 20 billion CFU of friendly bacteria per serving, guaranteed until end of expiry.
    • Proven to reach the gut alive.
    • Easy-to-take capsule.
    • Suitable for those on vegetarian, vegan, dairy-free or gluten-free diets.
    • Free from GMOs and soy. No artificial colours, flavours or preservatives typically found in other food & drinks containing friendly bacteria.
    • Recommended for daily use.
    • Easy to take on the go – no refrigeration required.
    • Winner of 2020 Rude Health Awards.
    • 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 30 and 90 capsules – serving size 1 capsule per day.

    Trustpilot Reviews


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

    Customer Questions

    All questions answered by probiotic experts Dr Aisling Dwyer MB BCh BAO (Medicine, Surgery and Obstetrics), MSc (Personalised Nutrition)​ and Dr Kate Stephens PhD (Food and Microbial Sciences) BSc(Hons) Medical Microbiology.

    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.

    What strength of probiotic should I take?

    When it comes to probiotics, ‘more’ is not always ‘better’. It is more important to consider the quality of the probiotic strains, and the number of gold standard clinical trials they have been featured in. It is also very important to ensure that this research is relevant for your individual needs and health concerns. High-quality supplements containing well-researched strains will contain the same number of billions used in clinical trials: some studies suggest that lower dosage have more significant effects, and therefore there is no point in offering a higher strength product (usually at higher cost) when the same effects will be achieved with a lower dose.

  • How to use

    Recommended use

    • For best results take 1 capsule daily or as professionally directed.
    • One capsule consists of a minimum of 20 billion live Lactobacillus acidophilus NCFM®, Lactobacillus paracasei Lpc-37®, Bifidobacterium lactis Bi-07® and Bifidobacterium lactis Bl-04®.
    • Can be increased to 2 capsules a day if desired - for ongoing use 1 capsule a day may suffice.
    • Take with food, preferably with breakfast.
    • For anyone unable to swallow capsules, the capsule can be opened and the contents sprinkled into cool food or drinks.
    • Do not exceed recommended daily dosage.

    Storage instructions

    No refrigeration necessary when stored in a cool, dry place below 25°C. 

    Customer Questions

    All questions answered by probiotic experts Dr Aisling Dwyer MB BCh BAO (Medicine, Surgery and Obstetrics), MSc (Personalised Nutrition)​ and Dr Kate Stephens PhD (Food and Microbial Sciences) BSc(Hons) Medical Microbiology.

    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 research1,2,3 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?

    The concern is that bacteria are delicate by nature, and that they may not survive stomach acid. Taking probiotics at a certain time of day (when stomach acidity is closer to neutral) could help ensure the highest survival rates of your probiotic. Confusingly though, different healthcare professionals and probiotic manufacturers have different guidelines about when is best to take these supplements! So, let us try to clarify a few things.

    First, let us look at the logic behind having probiotics on an empty stomach, advocated by some. Well, because acid is stimulated by consumption of food, it is thought that taking probiotics on an empty stomach (mainly first thing in the morning) is ideal because there is less residual acid in the stomach. However, it is also important to note that there is a lag time (up to 30 minutes) between when food is eaten and when acid is released into the stomach.

    With a few exceptions, it’s best to take your probiotic supplements with a breakfast, as the food helps to buffer the effects of stomach acid; it may also help to 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. 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
    2. 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
    3. 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


    Live probiotic 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, 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 dietary supplement and is not intended to prevent, treat or diagnose any medical conditions. 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.

  • Ingredients

     Ingredientsfor every day extra strength supplement fact panel

    • Stabiliser: micro-crystalline cellulose
    • Live probiotic cultures: Lactobacillus acidophilus NCFM®, Lactobacillus paracasei Lpc-37®, Bifidobacterium lactis Bi-07®, Bifidobacterium lactis Bl-04®
    • Vegetarian capsule: hydroxypropyl methylcellulose; anticaking agents: vegetable magnesium stearate, silicon dioxide.

    Each capsule contains 20 billion good bacteria. Guaranteed until the date of expiry.

    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.

    This product should not be used as a substitute for a varied diet.

  • Help & advice

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    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 had a acid relfux from last 3years.tried every single medicines but nothing helped me out.i always felt like something stuck in my chest and in my throat but thankGod finally i tried Optibac.i hv been only using this from last 2weeks and im better then before no more acid reflux or GERD feelings.My life ws a hell but thanks for this optibac Bc of this im living my normal life.If someone struggling from acid relfux or Gerd should try this Optibac.

      Rizvan ahmed - 2nd March 2021

    • One of the best probiotic i've ever had. Also the support is very kind and helpful.

      Isabella - 26th January 2021

    • I’ve been using these probiotics for nearly a year and was introduced to them by a friend, Sarah who’s a nutritionist. After speaking to her about my issues with digesting starchy foods she recommended Extra Strength to try and it worked perfectly for me. I have been using them ever since and always buy the 90 day pack as they are better value for money, don’t run out so quickly and uses less plastic. I have continued to take one everyday as it has completely resolved my digestive issues and even have my family on probiotics too! Thank you Optibac for such a positive lifestyle change

      Ama - 17th September 2020

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