Why Optibac?

At Optibac, we specialise entirely in friendly bacteria and we offer specific strains for your individual needs. We're proud to be the UK & Ireland's most trusted & recommended brand+ and if you're new to friendly bacteria supplements, here's why you can trust us too. 

For every day product with smoothie bowl

Especially for you

We've always been at the forefront of using specific strains for individual needs. This is important because research shows that different types of friendly bacteria have different properties. Unlike most other live cultures out there, we appreciate that it's not a question of one-size-fits-all, and we tailor our wide range accordingly. We have options for the entire family, from those especially for babies to every day friendly bacteria supplements. We also have supplements for different life stages such as Pregnancy or For Cholesterol. Make sure you choose the right friendly bacteria for you.

Highly researched

We pride ourselves on being backed by credible science, as all of our friendly bacteria strains are extensively researched in global leading laboratories. We work with internationally renowned strains, including Lactobacillus acidophilus NCFM®, which is the most researched of the whole acidophilus species. You can find this strain in our Every Day EXTRA  and Every Day MAX

Survives to reach the gut alive

During the research process, we ensure that each strain we use survives to reach the gut or vagina alive. All of our supplements have been scientifically proven to pass through stomach acidity, bile salts and digestive enzymes. Our For Those On Antibiotics supplement even survives alongside antibiotics!


We are so happy to be incredibly well reviewed by consumers around the world. Take a look at some of our reviews to see what they love about us! We average 4.8/5 with an 'Excellent' score on the independent site Trustpilot.


We aren't the only ones who love our live cultures! Our supplements such as For Women, Babies & Children and Every Day have won awards such as the Rude Health Awards, Your Healthy Living Awards, and Ireland's National Parenting Product Awards. We are also very proud to have won the Queen's Award for Enterprise. To find out more about our achievements, see the Optibac Awards page.

Easy to take

Our supplements are designed for busy lifestyles. They come in a handy capsule, which can be taken fuss-free with a cold drink, or in sachet form, so you can mix the powder into cold food or drink. None of the range requires refrigeration so you can keep them on your desk, or in your handbag - wherever means you will remember them! 

Suitable for everyone

Of our range of 16 high-quality supplements, 15 are vegetarian, 13 are vegan, and all of them are free from common allergens such as wheat, gluten, nuts and eggs. Not to mention, you can take Optibac if you are following a ketogenic, Paleo or FODMAP diet. For more information, take a look at our suitability and different diets FAQs.

Natural option 

Our live cultures supplements are a natural option and we take care to avoid any unnecessary additives like sugars, flavours, GMO ingredients and so on. There's no risk of dependency or addiction when taking live cultures, and you can feel comfortable taking Optibac supplements on a long-term basis such as Immune Support or short-term basis such as our One Week Flat, whichever suits you and your needs best.

Caring company 

We care about the health & happiness of our customers, and we are, and always will be dedicated to bringing you the best supplements and the best service. We also care very much about the world we live in, and have cut down on unnecessary packaging where possible, removing plastic from the range imminently. What's more, we donate to a number of charities and for every pack of our wonderful For Women sold, we give a portion of the sales to the international women's charity Womankind Worldwide.


Available worldwide & on subscription 

We believe that everyone should take live cultures supplements. Ideally, every day! So we've made it as easy as possible for you to give them a try, wherever you are in the world. We ship worldwide to over 50 countries directly from our online shop. We also have stockists across Europe and Asia and are available via a number of marketplaces including Amazon. You can also set up a subscription service with us, and receive your regular Optibac supplements as often as you'd like, without the hassle of ordering every month. Just specify which supplement you want and how often you want it, and we'll take care of the rest.

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