Right Strain. Right Time. Right Way.

At SMART STRAINS®, we’re revolutionising the way people use live bacteria, empowering you to take control of your health, one strain at a time.

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The SMART STRAINS® range

Meet our family of scientifically-proven, targeted live bacterial strains, formulated by The Gut Health Doctor®

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Patient holding and reading pack of SMART STRAINS for your vaginal microbiome
SMART STRAINS for your immune system being poured into water

What makes us unique

Forget what you think you know about live bacterial supplements. The science has evolved and the notion of taking a daily probiotic is outdated. Instead, you need...

  • The Right Strain

    We follow the latest scientific research and health guidelines, to bring you the most effective live bacterial strains and formulations, for your specific needs.

  • The Right Time

    Each product is designed to be taken exactly when you need it most.

  • The Right Way

    The recommended dosage, delivered in the right format (capsules, powder or liquid) for the most effective results proven in scientific trials.

Read the Science

We're not like other live bacteria products. Here's why.

    SMART STRAINS

    Live bacteria formulations backed by world-leading health bodies
    Formulated by a leading scientist with an award-winning PhD in probiotics
    Uses only scientifically proven bacterial strains in formulations
    Strains, dose and format specifically chosen based on effectiveness in scientific trials
    Contains added nutrients as recommended by the NHS
    No added sugars, sweeteners, emulsifiers, bulking agents, flavours or preservatives

    Other Probiotic Brands

    Live bacteria formulations backed by world-leading health bodies
    Formulated by a leading scientist with an award-winning PhD in probiotics
    Uses only scientifically proven bacterial strains in formulations
    Strains, dose and format specifically chosen based on effectiveness in scientific trials
    Contains added nutrients as recommended by the NHS
    No added sugars, sweeteners, emulsifiers, bulking agents, flavours or preservatives
Dr Megan Rossi The Gut Health Doctor

Formulated by Dr. Megan Rossi (PhD, RD) The Gut Health Doctor®

The Gut Health Doctor®, Dr. Megan Rossi (PhD, RD) is a leading dietitian, nutritionist and gut health authority with an award-winning PhD in probiotics. With SMART STRAINS®, she is revolutionising how people take live bacteria to care for them and their families, one strain at a time.

Read our story
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Quality without compromise

At SMART STRAINS®, we will never compromise on quality. From scientific research and ingredient selection, to manufacturing excellence and quality testing, we go above and beyond at every stage - so you know you're not wasting a penny.

We've scoured the latest scientific research to find the most effective live bacterial strains at the right dosages, scientifically proven for their specific indications, and backed by international health organisations.

As all our strains have been used in actual human studies, they are scientifically proven to reach, survive and thrive in their target destination, whether that's the gut, vagina, or nose and throat. As you'd expect, every batch is quality tested, so you can be sure you're getting the full labelled dose of bacteria right up to the end of the product's shelf life. Guaranteed.

Our formulations contain absolutely no unnecessary ingredients, offering the cleanest and purest of products, free from added sugars, emulsifiers, sweeteners, flavours or preservatives.

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RIght Strain

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Right Time

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Right Way

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500

publications of human studies documenting our bacterial strains.

40

years of scientific research into bacterial strains used in SMART STRAINS® products

0

emulsifiers, sugars, sweeteners, flavours or preservatives added to our formulations.
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We’re Credible.

We’re Trusted.

We’re Trailblazers.

Our range of scientifically-proven formulations are targeted at specific everyday needs that affect every member of the family. From immune support to fussy babies, our range provides the right strain, at the right time, in the right way to care for you and your family.

Read the science

Customer Reviews

See what our customers think about SMART STRAINS®

The latest science digested

Dive into the SMART STRAINS® Knowledge Hub, written and reviewed by healthcare professionals

Why women's gut health deserves its own spotlight
1 minutes
Read
The gut-immune connection: 4 back-to-school tips every parent should know
1 minutes
Read
Pregnancy and early life: The first 1000 days (Part 2)
1 minutes
Read
Pregnancy & early life: The first 1000 days (Part 1)
1 minutes
Read
How can hormones affect your vaginal microbiome?
1 minutes
Read

Are you a Healthcare Professional?

Explore the latest science-backed insights on live bacteria and gut health, including key findings from randomised, placebo-controlled scientific trials using our strains and formulations. Plus, access additional resources on our dedicated healthcare professional webpage.

I am a healthcare professional