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Immune & Digestive Drops for Babies and Toddlers
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Immune & Digestive Drops for Babies and Toddlers
Immune & Digestive Drops for Babies and Toddlers
Fussy Babies 7

Immune & Digestive Drops for Babies and Toddlers

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What is it?

Did you know the first 1000 days from birth is a critical window for your baby’s microbiome development?

SMART STRAINS for fussy babies is specially formulated with Bifidobacterium lactis, BB-12[sup]®[/sup] - the world's most published Bifidobacterium strain - based on recommendations from the World Gastroenterology Organisation Guidelines on Probiotics and leading Paediatric guidelines, for fussy babies.

Each daily dose provides the recommended 1 billion live bacteria, replicating the exact bacterial formula and dose used in scientific trials. Also includes 10μg Vitamin D[sub]3[/sub], as recommended by the NHS for all babies and children up to 4 years of age. Vitamin D[sub]3[/sub] helps support the normal functioning of your baby’s immune system.

Why choose SMART STRAINS®?

Probiotic science has evolved and SMART STRAINS® is leading the live bacteria revolution.

The notion that all live bacteria have similar effects, and that you need to take one daily for general gut health is outdated.

Just as you wouldn't take an iron supplement for a vitamin D deficiency, the latest gut microbiome science tells us how important it is to get specific - we should be taking the right strain, at the right time, in the right way.

Formulated by The Gut Health Doctor®, SMART STRAINS® is a family of targeted live bacteria supplements that use evidence-based live bacterial strains, backed by international health bodies, to help you support your baby's gut microbiome.

Who is it for?

Safe to use from birth to 12 months and beyond. Give once daily, for a minimum of 21 days. SMART STRAINS® for fussy babies is dairy & gluten free, and contains no added emulsifiers, sugars, sweeteners, colours, flavours or preservatives.

How to take?

Shake bottle for at least 10 seconds to wake bacteria. Turn bottle upside down to dispense drops onto spoon, into liquid or directly onto baby's tongue.

Each daily dose of 6 drops provides the recommended 1 billion live Bifidobacterium lactis, BB-12[sup]®[/sup] and 10μg of Vitamin D[sub]3[/sub]

What's in it?

Ingredients: High oleic sunflower oil, Bifidobacterium lactis, BB-12® (1 billion), vitamin D[sub]3[/sub] (10µg, 100% Reference Intake).

Delivery and returns

Get free Royal Mail tracked 24-hour delivery on all orders over £30.

For orders below £30, you can choose between Royal Mail tracked 48 (for an additional £2.99) or Royal Mail tracked 24 (£3.99).

Monday - Friday same day dispatch on orders placed before 1pm. Saturday same day dispatch on orders placed before 11am. Any orders placed after these times will be dispatched on the following weekday.

Currently we are only able to deliver across the UK and its territories. But please register your interest and we’ll let you know as soon as international shipping is available.

Standard delivery times are:
Royal Mail Tracked 48 - 2-3 working days (subject to Royal Mail Terms and conditions)
Royal Mail Tracked 24 - The next working day (subject to Royal Mail Terms and conditions)

We are unable to guarantee these delivery times, and they may differ depending on the time of the year (see here for more information)

When your little one is unsettled, the whole family feels it.


Gentle, targeted support for tiny tummies with live bacteria BB-12® & Vitamin D3 – scientifically formulated to support their gut microbiome and immune system from birth.

Dr Megan Rossi offering a pack of SMART STRAINS for fussy babies to you
Mother soothing baby with colic
SMART STRAINS for fussy babies drops being poured onto a teaspoon

How SMART STRAINS® works

Specifically designed with the science in mind

  • The Right Strain

    Bifidobacterium lactis BB-12® is recommended* by the World Gastroenterology Organisation Guidelines on Probiotics and leading Paediatric guidelines, for fussy babies.

  • The Right Time

    Safe to use from birth to 12 months and beyond. Give once daily, for a minimum of 21 days.

  • The Right Way

    Directions: Shake to wake, for at least 10 seconds. Turn bottle upside down to dispense drops onto a spoon, into liquid, or directly onto baby’s tongue.
    Dosage: 6 drops per day. Provides the recommended* 1 billion live BB-12® + 10μg vitamin D3

Read the Science

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

    SMART STRAINS[sup]®[/sup] Immune & Digestive Drops for Babies and Toddlers

    Strain backed by leading paediatric guidelines on probiotics
    Exact strain and dose as recommended by the World Gastroenterology Organisation (WGO), for fussy babies
    Formulated by a leading scientist (and mum) with an award-winning PhD in probiotics
    Contains 100% of the daily reference intake of vitamin D[sub]3[/sub] for babies recommended by the NHS to support the immune system
    Safe from birth
    No added sugars, sweeteners, emulsifiers, bulking agents, flavours or preservatives

    Other Baby Probiotic Brands

    Strain backed by leading paediatric guidelines on probiotics
    Exact strain and dose as recommended by the World Gastroenterology Organisation (WGO), for fussy babies
    Formulated by a leading scientist (and mum) with an award-winning PhD in probiotics
    Contains 100% of the daily reference intake of vitamin D[sub]3[/sub] for babies recommended by the NHS to support the immune system
    Safe from birth
    No added sugars, sweeteners, emulsifiers, bulking agents, flavours or preservatives

70

%

of regular users of live bacterial supplements find it difficult to choose the right supplement

60

%

of people do not check the specific bacterial strains they are buying

51

%

are unaware that different probiotic strains treat different conditions

We’re Credible.

We’re Trusted.

We’re Trailblazers.

If you’re confused about live bacterial supplements, you’re not alone. That’s where SMART STRAINS® steps in. We’re here to the bring clarity and education.[sup]1[/sup]

Read the Science

The Right Strain

The Right Time

The Right Way

Dr Megan Rossi The Gut Health Doctor

Formulated by Dr Megan Rossi 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 the Science

Customer Reviews

Don't just take our word for it, here's what customers are saying about SMART STRAINS®

These digestive drops help settle fussy babies and support immune health. Customers said it "worked great" for colic, reflux, and digestive issues, with many noting improved sleep. Effects typically appear within days to weeks. Easy to administer and tasteless. Some found it expensive, with mixed results.

Digestion (positive)Sleep (positive)Service (positive)Colic (positive)Baby (positive)
  • 5 stars: 16 (84%)
  • 4 stars: 2 (11%)
  • 3 stars: 1 (5%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
E
Emma H.
Great product and even better

Great product and even better customer service

A
Aisha
Third times a charm

My first two children were colic and suffered from reflux so when it came to my third and hearing about Smart Strains for fussy babies I did not hesitate. He has been brilliant, even with older brothers coming home with sickness. Will be recommending this to all.

B
Brian
Worked perfectly on bub

After our first child seemed to be constantly sick for months on end with one virus/cough/snotty nose after another, I decided to buy 2 boxes of these for our 2nd newborn. I would've tried anything!! This stuff worked great and I'm off to get 2 more boxes.

S
Sam
Can't believe how well it's worked

My partner and I were incredibly low on sleep and so worried about our little one as they just wouldn't settle. Tried this after a friend recommended and it's been a life saver. Our little one is finally settling and we're getting more sleep as a result too!

T
Trish
Happy Bub

My daughter was having a trying time with her beautiful new baby.
After reading some reviews on Smart Strains I suggested she try them.
Thankfully bub is so much better and my daughter can enjoy her first born even more.

S
Sarah
Bought for my friends baby

I bought Fussy Babies for my friend because her little one was really unsettled — lots of crying, especially after feeds, and not sleeping well at all. She said she didn’t expect much, but after a little while things seemed so much easier. He wasn’t as constantly distressed and seemed more comfortable in himself, which made a big difference to her day-to-day stress. She’s now ordered herself more!

E
Emily
My saviour!!

Have had a really tough time with my unsettled little girl. Bought this after hearing about it on a podcast. It did take the 3weeks but from that point on the difference has been massive. Now on our 4th bottle.

R
RMD3
Bought for my friend's little girl

Was a winner! She finally slept through the night, which was hugely appreciated by both parents (and the little one!). Will be buying again

R
Rebecca S.
Undecided if it works or

Undecided if it works or not. I’ve a very fussy baby and like most other parents will try ANYTHING to try to help. After using it now for a few weeks I’m not sure if she’s less fussy due to her age and passing through her milestones or this. I wouldn’t order again as it’s very expensive.

M
MISS S.A.M.
Product is perfect!

This product is absolutely incredible. My 5 week old was having digestive issues and now she is much more regular!

L
Louisa
First thing that has worked

I've tried the rest of the SMART STRAINS range and loved it so bought this for my friend with a new baby, she's singing its praises! First thing that seems to have worked to settle her little one

B
Becky
Would highly recommend

We had tried many other probiotics for our little boy who struggled to go to the toilet and had bad trapped gas as a small baby, none of which seemed to have any effect. We decided to try smart strains as reviews seemed to suggest it helped others and it worked within a week. We’ve been using it ever since and our little boy is almost 11 months now.
Very easy to use and our baby doesn’t have any issues taking it. Would highly recommend.

A
Alyson R.
My grandson is just about

My grandson is just about to start the 2nd bottle so it is early days for knowing if will help. He is autistic and anecdotal evidence suggests the micro biome in those with autism can be deficient and that improvements can be seen. It easily dispensed and being tasteless it has been easy to administer. I like other products from this company and feel they are beneficial so hopefully this one will prove to be the same.

M
Megan W.
Great product, easy to administer.

Great product, easy to administer. Highly recommend!

K
KT60
Helped calm my daughter’s baby

My niece's newborn was really unsettled with colic and it was so hard seeing her struggle. I bought this probiotic for her to try and honestly it made a BIG difference. The crying eased up after a few days and her baby seemed more comfortable. It’s been such a relief for both of them!!

C
Chris N.
Works wonders

Helped our little guy go to the toilet

E
Emily B.
Seems good so far for

Seems good so far for my newborn baby

R
Rosie L.
:star:️:star:️:star:️:star:️:star:️ - genuinely really great!

I hardly ever write reviews but this was recommended to me by the lady behind the pharmacy in boots so I know that its legit, and i've never found anything my baby is ok to take. She said her sisters baby took them and im so glad i bought these!

C
Christine M.
Baby happy to take them,

Baby happy to take them, and hoping they are giving them a great start in life.

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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.

References

1. Data on File. January 2025. Opinium Research - Independent Survey of 2000 people reflective of the UK population