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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 5,721 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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Friendly Bacteria Bestsellers
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 the UK & Ireland's most trusted and recommended friendly bacteria supplements^. Our range contains 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 friendly bacteria for years, Opt for Optibac.
Meet our bestsellers
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![Every Day Probiotics]()
Every Day
Contains 5 billion live cultures, backed by 26 gold standard clinical trials. A great daily supplement to start your friendly bacteria journey.
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![For Women Probiotics]()
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 Probiotics]()
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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![Every Day EXTRA Probiotics]()
Every Day EXTRA
A high strength daily supplement containing Lactobacillus acidophilus NCFM®, the most researched acidophilus strain in the world.
Get personalised advice
Sometimes it’s good to talk, so if you’d prefer to chat to someone in person, you can get in touch with our expert Nutritional Therapists on our live chat service by clicking on the orange button in the bottom right of your screen.
You can also book a free 15 minute consultation with one of the team.
Book a 1:1 Consultation