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.

Find a stockist

Type your postcode or town in the box below to find your nearest OptiBac Probiotics stockist:


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

Read more about our research...

A natural option

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

See how we're different...

From our family to yours

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

Find out more about us...

Customer Reviews

Below you'll see a selection of reviews recently collected on the independent external review website TrustPilot.
Read all our reviews

Average TrustPilot Rating

From 397 reviews


The travel Optibiotics are great, for the first time I had no problems in Africa. I will certainly buy them again when I am going abroad.

My 'pro' firm of choice

Great products at good prices. Am currently in India using the travel pack and can highly recommend.

bifidobacteria & fibre

Excellent product

I've been using OptiBac Probiotics for three weeks

I have not stomach pain every time I ate. I have not gas. I goes to the bathroom more regularly

Optibac for women are working well for me. Thank you

I started with your Optibac a month ago and since moving to the Optibac for women which is much more effective.I am blessed to know that my local Tesco now stocks most of your range which is helpful. ... Read More

won't travel without them

Ordered the travel probiotics prior to a trip to Thailand, being someone who has a sensitive system and prone to travellers tummy. Took one a day throughout the trip and for 4 days prior to leaving an ... Read More

Optibac Probiotics are high strength quality product

I take all their products to obtain a wide variety of good gut bacteria to enhance vitamin &mineral absorption &combat chronic fatigue.