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Optibac Every Day Extra

30, 90


An advanced, high strength daily supplement to complement your body’s natural gut bacteria. Suitable for vegans, Every Day EXTRA contains Lactobacillus acidophilus NCFM®, the most researched acidophilus strain in the world.

Information Leaflet
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Who is Optibac Every Day EXTRA for?

An advanced friendly bacteria supplement suitable for vegans, vegetarians, and gluten-free, dairy-free or soy-free diets. Recommended for optimal daily support to complement your body’s natural gut bacteria.

Key benefits

  • Trusted, multi-strain friendly bacteria supplement
  • The strains in this supplement have been collectively studied in approximately 70 clinical trials
  • Lactobacillus and Bifidobacteria naturally occur in the digestive tract
  • This product provides live bacteria that are suited to both the small intestine (Lactobacillus species) and large intestine (Bifidobacterium species)
  • Complements the bacteria naturally present in your gut
  • Scientifically proven to reach the gut alive
  • Highest quality standards – subject to rigorous laboratory testing to ensure consistent quality and safety
  • Free from FOS (Fructooligosaccharides), may be suitable for those with IBS
  • 20 billion live cultures per serving, guaranteed until end of expiry
  • Easy-to-take capsule
  • Shelf stable, refrigeration is not 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.

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.

How do I choose the best friendly bacteria for adults?

With so many brands to choose from, it can be difficult to choose the friendly bacteria supplement that’s right for you. We recommend looking for good bacteria 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 especially for your needs.

What strength of live cultures should I take?

When it comes to friendly bacteria, ‘more’ is not always ‘better’. It is more important to consider the quality of the good bacteria 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. High-quality supplements containing well-researched strains1 should contain the same number of billions used in clinical trials.

Is it OK to take friendly bacteria every day?

Yes, it is safe and generally advisable to take your friendly bacteria supplement daily. These bacteria colonise in the gut for a few weeks but research1,2,3 suggests that the friendly bacteria strains will disappear without regular supplementation, so for this reason you might wish to take them regularly.

Should you take live cultures on a full or empty stomach?

The concern is that bacteria are delicate by nature, and that they may not survive stomach acid. Taking live cultures at a certain time of day (when stomach acidity is closer to neutral) could help ensure the highest survival rates of the good bacteria. Confusingly though, different healthcare professionals and live cultures 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 taking live cultures on an empty stomach, advocated by some. Well, because acid is stimulated by consumption of food, it is thought that taking live cultures 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 friendly bacteria 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 friendly bacteria through the stomach, and ensure that they are well mixed with the stomach contents as they pass into the small intestines.

How long should you take friendly bacteria 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, or during the winter flu season. However, if you prefer general daily supplementation, then take your supplements every day. There is no current research to suggest the body becomes dependent on good bacteria, so long-term supplementation is also fine.

What strength should a friendly bacteria supplement be?

When choosing a live cultures supplement, remember that high strength does not always mean high quality.

Rather than looking at the number of billions, it is far more important to look at the good bacteria strains it contains. It is best to choose a supplement containing high-quality strains which have been used in gold standard clinical trials. High-quality supplements will typically contain the same number of billions used in the clinical trials; sometimes lower doses perform just as well as high doses1 so it is not worth paying extra for more billions than you need.

However, some people do better on a higher dose, and it is fine to experiment and increase the dose of any of our products; ultimately it all depends on your individual needs and responses to the supplement.

Can a good bacteria supplement be too high strength?

The human gut is home to roughly 100 trillion bacteria, so the amount contained in even our highest strength live cultures supplements (75 billion) is comparatively small. Many people take several of our supplements at the same time, depending on their individual needs and requirements. We’re all individual, however, so if you tend to be sensitive to new foods and supplements, sometimes it’s best to introduce them gradually. If you want to start with half a dose initially, then our live cultures capsules can be opened, and the contents taken alone.

Following the taxonomic updates published in April 2020, a reclassification has been proposed for the L. paracasei species, and the paracasei strain in Every Day EXTRA may therefore now also be known as Lacticaseibacillus paracasei subsp. paracasei Lpc-37®, or still indeed as L. paracasei Lpc-37® for short.

Additional information

Pack Size

30, 90

Uses / Instructions

Recommended use

  • For best results take 1 capsule daily, preferably with breakfast.
  • If desired, or professionally directed, can be increased to 2 capsules a day.
  • Can be used on an ongoing basis.
  • Suitable from 12 months onwards. For those unable to swallow capsules, the capsule can be opened and the contents mixed into cool food or drinks.
  • Do not exceed recommended daily dosage.


  • For best results, do not remove desiccant sachet from the glass jar and close lid firmly after each use.
  • For maximum potency, can be stored in the fridge after opening.
  • 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, 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 prevent, treat or diagnose any medical conditions.
  • 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.

Side Effects

See patient information leaflet/packaging for details.


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

Each capsule guarantees 20 billion live cultures.


  • Vegan
  • Vegetarian
  • No dairy
  • Gluten free
  • Soy free
  • Suitable in pregnancy
  • Suitable for breastfeeding
  • Yeast free
  • GMO free
  • Free from artificial flavourings, colourings and preservatives
  • No chemicals or parabens


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