Buy Friendly Bacteria

Browse the full range of Optibac supplements.

We are the UK & Ireland’s most recommended brand of friendly bacteria supplements*, with options to suit everyone.

Optibac have been specialists in live cultures for almost 20 years, and our range contains the world’s most researched strains of friendly bacteria1, shown in gold standard clinical trials to reach the gut and vagina alive. We offer live cultures for the whole family, tailored for every life stage and different health needs2,3.

We sell more than just friendly bacteria capsules: our range includes friendly bacteria in liquid drops, powder sachets, and gummies too, so whatever your preference, you will find a suitable supplement in the Optibac shop. Find out more about the different types of friendly bacteria supplement.

Those who like to shop sustainably will be pleased to note that we have reduced plastic in our packaging by 96% and use recyclable cartons. If you need further convincing to shop at Optibac, check out the excellent Reviews from our happy customers on each product page.


Showing 16 results

  • Every Day

    Every Day

    4.8/5 (68 reviews)

    From £12.99 to £36.99

  • Every Day EXTRA

    Every Day EXTRA

    4.8/5 (96 reviews)

    From £24.99 to £64.99

  • Every Day MAX

    Every Day MAX

    4.9/5 (28 reviews)

    From £39.99 to £107.99

  • Adult Gummies

    Adult Gummies

    4.9/5 (19 reviews)

    From £12.99 to £23.99

  • For Women

    For Women

    4.7/5 (159 reviews)

    From £9.99 to £52.99

  • Baby Drops

    Baby Drops

    4.8/5 (31 reviews)

    From £14.99 to £39.99

  • Babies & Children

    Babies & Children

    4.9/5 (58 reviews)

    From £7.99 to £48.99

  • Kids Gummies

    Kids Gummies

    5/5 (45 reviews)

    From £12.99 to £34.99

  • Immune Support

    Immune Support

    4.6/5 (25 reviews)

    From £12.99 to £23.99

  • One Week Flat

    One Week Flat

    4.2/5 (84 reviews)

    From £8.99 to £26.99

  • Saccharomyces Boulardii

    Saccharomyces Boulardii

    4.6/5 (71 reviews)

    From £7.99 to £29.99

  • For Those On Antibiotics

    For Those On Antibiotics

    5/5 (21 reviews)

    From £6.99 to £18.99

  • Bifido & Fibre

    Bifido & Fibre

    4.8/5 (37 reviews)

    From £7.99 to £20.99

  • Pregnancy


    5/5 (22 reviews)


  • For Cholesterol

    For Cholesterol

    4.8/5 (22 reviews)

    From £18.99 to £34.99

Should I take friendly bacteria in capsules, tablets, liquids, gummies or powders?

Live cultures come in many different formats. Should you choose friendly bacteria capsules, tablets, pills, or powders?? Are gummies effective? Are liquid supplements better? Don't worry, if you buy your friendly bacteria supplements from a trusted specialist company, all formats will be equally as effective, so just choose the format and strains which suit you best.

Find out more about choosing the best live cultures supplement.

Is it ok to take friendly bacteria supplements every day?

Yes! It is both safe and recommended to take your friendly bacteria supplement on a daily, ongoing basis. Research4,5,6 suggests that good bacteria only colonise in the gut for a few weeks, so it's a good idea to have a regular intake of live cultures.

Can I open live cultures capsules?

It's absolutely fine to open Optibac live cultures capsules and take the contents directly into the mouth or in cool, non-acidic food/drink, without any effect on the viability of the friendly bacteria. Encapsulated live cultures from other brands may need to remain in their capsules, however, so best check with the manufacturer.

Do Optibac sell friendly bacteria vitamin supplements?

We certainly do! Optibac have a range of supplements with added vitamins and minerals for both adults and children. You can choose products with added Vitamin C, Vitamin D, Vitamin B1, Calcium, and Zinc. For more information, visit our Added Nutrients section.

To find out where else you can buy the Optibac Probiotics award-winning range of live cultures**, visit our FAQ pages.


  1. Dronkers, T. M. G., Ouwehand, A. C. and Rijkers, G. T. (2020) ‘Global analysis of clinical trials with probiotics’, Heliyon, 6(7). doi: 10.1016/j.heliyon.2020.e04467.
  2. Probiotics. (2022). NHS Retrieved 31 March 2022, from
  3. Markowiak P and Śliżewska K (2017) Effects of Probiotics, Prebiotics, and Synbiotics on Human Health. Nutrients, 9(9): 1021
  4. 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
  5. 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
  6. 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

* + An independent survey on probiotics of 1,000 people across the UK, August 2020. See T&C's for more details.

**Friendly bacteria, also known as ‘live cultures’ or ‘probiotics’, are good bacteria which live in the gut and are considered to be vital for good digestive and overall health2,3