Shop Probiotics

Browse the full range of Optibac Probiotics supplements.

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

Optibac Probiotics have been specialists in live cultures for almost 20 years, and our range contains the world’s most researched strains of friendly bacteria1, proven in gold standard clinical trials to reach the gut and vagina alive. We offer probiotic supplements for the whole family, tailored for every life stage and different health needs2,3 including digestion4, mood5, and immune support6.

We sell more than just probiotic capsules: our range includes live cultures 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 probiotic 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 15 results

  • Adult Gummies Probiotics

    Adult Gummies Probiotics

    4.9/5 (19 reviews)

    From $17.99 to $32.99

  • For Women Probiotics

    For Women Probiotics

    4.7/5 (59 reviews)

    From $23.99 to $64.99

  • Every Day Probiotics

    Every Day Probiotics

    4.8/5 (68 reviews)

    From $17.99 to $39.99

  • Immune Support Probiotics

    Immune Support Probiotics

    4.6/5 (25 reviews)

    From $17.99 to $32.99

  • Baby Drops Probiotics

    Baby Drops Probiotics

    4.8/5 (31 reviews)


  • Saccharomyces Boulardii

    Saccharomyces Boulardii

    4.6/5 (11 reviews)

    From $21.99 to $34.99

  • Every Day MAX Probiotics

    Every Day MAX Probiotics

    4.9/5 (28 reviews)


  • One Week Flat Probiotics

    One Week Flat Probiotics

    4.4/5 (39 reviews)


  • Pregnancy Probiotics

    Pregnancy Probiotics

    5/5 (22 reviews)


  • For Cholesterol Probiotics

    For Cholesterol Probiotics

    4.8/5 (22 reviews)

    From $22.99 to $45.99

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

Probiotic supplements come in many different formats.Should you choose probiotic capsules, tablets, pills, or powders? Are gummies effective? Are liquid supplements better? Don't worry, if you buy your probiotic 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 probiotic supplement.

Is it ok to take probiotic supplements every day?

Yes! It is both safe and recommended to take your favourite probiotic supplement on a daily, ongoing basis. Research7,8,9 suggests that probiotic 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 probiotic capsules?

It's absolutely fine to open Optibac Probiotics 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 Probiotics sell friendly bacteria vitamin supplements?

We certainly do! We offer a range of probiotic 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, visit our FAQ.


  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. Satish Kumar L, Pugalenthi L, Ahmad M, et al. (April 18, 2022) Probiotics in Irritable Bowel Syndrome: A Review of Their Therapeutic Role. Cureus 14(4): e24240. doi:10.7759/cureus.24240
  5. Messaoudi M. et al., (2011), ‘Assessment of psychotropic-like properties of a probiotic formulation (Lactobacillus helveticus R0052 and Bifidobacterium longum R0175) in rats and human subjects’. British Journal of Nutrition, 105(5):755.
  6. Jespersen L. et al., (2015), ‘Effect of Lactobacillus paracasei subsp. paracasei, L. casei 431® on immune response to influenza vaccination and upper respiratory tract infections in healthy adult volunteers: a randomized, double- blind, placebo-controlled, parallel-group study’. Am.J.Clin.Nutr., 101:1188-1196.
  7. 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
  8. 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
  9. 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.

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