What are live cultures?

Live, or active cultures, refer to the microorganisms found in foods such as yoghurt, which may be beneficial for human health. The term 'live cultures' is increasingly used instead of the term 'probiotics' and a common example is the species acidophilus.

What is acidophilus?

Acidophilus is a particular species of natural bacteria from the Lactobacillus family. It has been well researched in areas such as traveller’s health, taking natural bacteria alongside antibiotics, and Candida overgrowth.

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We’re experts in live cultures, and the OptiBac Probiotics range offers you some of the most researched strains in the world.

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A natural option

All the OptiBac Probiotics supplements are free from added flavourings, unlike many sources of live cultures.

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From our family to yours

We're a family run business, which means we understand the importance of looking after your whole family.

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Customer Reviews

Below you'll see a selection of reviews recently collected on the independent external review website TrustPilot.
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Average TrustPilot Rating

From 608 reviews

travel probiotics

Prompt delivery & excellent product. Just spent 3 weeks in India and not even 1 abdominal cramp!

Life changing

Would recommend to everyone especially people with guy problems and IBS like myself. It made me so much better


Fast delivery, genuine product and they work!


Having suffered after having my appendix removed three years ago from digestive problems, since taking Optibac's Every Day probiotic for the past month I am feeling much better. I have just reordered ... Read More

winter probiotic with vitamin c

very good, not sure the vitamin c is necessary with a normal/semi healthy diet.

Good, product..fast shipping internationally

Good company to get probiotics..trust worthy..

Very Happy

Great service, initially i had a wrong product supplied, the issue was put right immediately, i was impressed with their professionalism and speed to react. the products seem good, early days yet thou ... Read More


I suffered with terrible IBS for years until a friend recommended these and within days my 'movements' we're back to normal and the pain and bloating gone, just wish I'd known about this years ago

excellent product!

Excellent product and great service Thank you