"Try probiotics, you won't look back"

  • Choose the UK's probiotic specialists
  • Widest range - there's an Optibac for everyone
  • All proven to complement the natural gut bacteria

Find out why we are the UK's most trusted friendly bacteria brand

Showing our favourite reviews

High quality probiotics, backed by credible science

At Optibac Probiotics we specialise entirely in live cultures and have many different supplements for different life stages and individual needs.

We're the UK & Ireland's most recommended probiotic supplements...

So you can feel good about choosing Optibac.

  • Icon

    Backed by science

    We only use the most highly researched strains of probiotic bacteria

  • Icon

    Natural ingredients

    We prioritise natural ingredients and take care to avoid hidden sugars and other nasties

  • Icon

    Rated 'Excellent'

    From over 4,500 independently verified reviews on Trustpilot

  • Icon

    Probiotic experts

    With 20 years' experience of creating a specialist range of probiotic supplements

  • Icon

    Targeted supplements

    Our range of probiotics is formulated to complement the body’s natural gut bacteria

  • Icon

    Eco-conscious packaging

    Including glass jars, compostable pouches and FSC®-certified cartons

We’ve featured in…

  • Logo0
  • Logo1
  • Logo2
  • Logo3
  • Logo4
  • Logo5
  • Logo6
  • Logo7

We care about the health & happiness of our customers

Caring & Committed

We specialise in probiotics and have a wide range to meet your individual needs. Our supplements are proven to not only reach the gut alive, but to complement the natural microbiome. What's more, we're committed to helping our planet and others, as demonstrated by our support for organisations such as Womankind Worldwide.

More about us
Image of Queens award

Proud winners of The Queen's Award for Enterprise

We are truly honoured to have been awarded the Queen's Award for Enterprise; the most prestigious awards for business in the UK. These awards celebrate the best of British business and recognise companies who are making an outstanding contribution to enterprise. In 2019 we won in the International Trade category.

IBS Awareness month

5 Top Tips to help IBS

April is IBS awareness month and sadly, IBS now affects 20% of people in the UK and costs the NHS an estimated £1.2-£2 billion per year. IBS can significantly impact the quality of life of those affected and shockingly, an international survey found that on average, those with IBS would be willing to give up 25% of their remaining life to be free of the condition.

Read 5 Top Tips to help IBS Blog

Research backed, natural probiotics for every need

At Optibac Probiotics we specialise entirely in live cultures and we understand the importance of using specific strains for your individual needs.

  • Lactobacillus acidophilus NCFM®

    This is the most researched strain of acidophilus in the world and is shown to help support immune health, digestion, and occasional bloating*. Find it in our high-strength supplements, Every Day EXTRA and Every Day MAX.

  • Saccharomyces boulardii

    This strain of probiotic yeast has been used for 50 years all over the world for occasional diarrhoea*. It’s very robust and shows strong resistance to heat, humidity and stomach acidity. Find it in our S Boulardii.

  • Lactobacillus rhamnosus GG

    This is the most researched strain of probiotic bacteria in the world. It has been extensively studied around the world in all age groups for digestive and immune health*, especially in Babies & Children.

  • Bifidobacterium lactis BB-12®

    Thought to be the most researched strain of the entire family of Bifidobacteria! Extensively trialled for digestive regularity* in various life stages, including in infants, pregnant women and older people, it’s in Bifido & Fibre.

  • Lactobacillus paracasei CASEI 431®

    This high quality, incredibly well researched probiotic strain has been widely studied in thousands of people and shown to stimulate immune responses*. It can be found in Immune Support.

  • Bifidobacterium breve M-16V®

    Clinically trialled in over 4,000 infants and young children, including newborns, and shown to support digestion and immune health*. Find this strain in both our Baby Drops and Babies & Children.

More live cultures per daily dose, and best value for money!

Bio-Kult Symprove
Price Price $17.99 Price $12.93 Price $97.49
Daily serving Daily serving 1 capsule (5 billion) Daily serving 1-4 capsules (2 - 8 billion) Daily serving 70ml (10 billion)
Price per day Price per day 59¢ Price per day 43¢ to $1.72 Price per day $3.24
Price per billion cultures Price per billion cultures Price per billion cultures Price per billion cultures 32¢
Eco conscious packaging Eco conscious packaging Yes Eco conscious packaging No Eco conscious packaging No

Comparing Optibac Every Day 30 capsules, Bio-Kult Everyday (formerly known as Advanced Multi Strain Formulation) 30 capsules and Symprove 500ml bottle in either flavour. Optibac Every Day packaging is widely recyclable and not in plastic containers nor blister packs.

All products

Follow @optibac on social media