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The UK's No. 1 bestselling brand
of friendly bacteria supplements^
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Rated 'Excellent' on Trustpilot
4.8 stars (based on 5,835 reviews)
Scientifically proven to reach the gut
& complement the natural microbiome
FREE UK DELIVERY on orders over £40
and 14-day hassle-free returns
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Welcome to Optibac
92% of people think it’s important to take supplements to complement the gut microbiome. If you’re one of them, then you’re in the right place.
Optibac are live cultures specialists and the UK’s most recommended friendly bacteria brand. Our range contains some of the world’s most researched strains, supported by hundreds of clinical trials, and all of our friendly bacteria are proven to reach the gut alive.
So, whether you are just getting started, or have been using live cultures for years, choose Optibac with confidence.
Customer favourites
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Every Day
Contains 5 billion live cultures, including Lactobacillus rhamnosus Rosell-11®. A great daily supplement to start your friendly bacteria journey.
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For Women
The friendly bacteria in this bestselling supplement are proven to reach the vagina and support natural pH levels. A favourite with women worldwide.
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Kids Gummies
Naturally delicious, these highly researched friendly bacteria gummies contain added Vitamin D and Calcium to support all-round gut and immune health.
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Baby Drops
Natural, easy-to-use drops containing the world-renowned B. breve M-16V®, expertly formulated to complement your baby’s natural gut bacteria.
Browse our range
There's an Optibac for everyone
With a range of 16 highly researched live cultures supplements, all designed to suit specific needs and life stages, there is an Optibac supplement for everyone! To help you choose the best one for you and your family, watch a short video from Camilla Gray, one of our many qualified Nutritional Therapists.
If you'd prefer to talk with a real person, use our live chat service by clicking on the orange button between 9am and 5pm UK time.
Try our delicious gummies
If you struggle with capsules, try our tasty mixed berry Gut Health Gummies. They are naturally delicious, with no added sugar or sweeteners, and are as highly researched as our other supplements.
Gut Health Gummies contain the premium strain, Bacillus coagulans Unique IS-2, plus Vitamin D, Zinc, Calcium and FOS fibres, for all-round gut and immune support. Oh, and they come in 100% plastic free packaging too!
Learn more about Gut Health Gummies