Babies & Children

10 sachets |10 days' supply

Dr Sasivimol Ahmed PhD, PG Dip (Personalised Nutrition), BSc (Food Science)
Lactobacillus rhamnosus GG is the world's most researched friendly bacteria strain, clinically trialled in infants and school children.
Dr Sasivimol Ahmed
Dr Sasivimol Ahmed PhD, PG Dip (Personalised Nutrition), BSc (Food Science)

Who is it for?

Developed especially for babies, toddlers and children, this friendly bacteria supplement contains a unique blend of 3 of the most scientifically researched strains for children from 0 to 12 years, as well as FOS fibres and added Vitamin D3 to help maintain immune health.

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Next dispatch is 8th December, we're sorry for any inconvenience.

FREE UK delivery on orders over £40.

UK express - Monday to Friday delivery.

See our Delivery & Returns for more information.

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  • Vegetarian


  • No dairy

    No dairy

  • Gluten free

    Gluten free

  • Soy free

    Soy free

  • No added sugar

    No added sugar

Key benefits

Friendly bacteria for children

Expertly formulated especially for babies, toddlers and children up to 12 years old.

  • Highly researched Contains three high-quality friendly bacteria strains scientifically trialled in thousands of infants, toddlers, and children, including L. rhamnosus GG, the most scientifically studied strain in the world
  • Expertly formulated live cultures for children Suitable for use from birth to 12 years, with strains of friendly bacteria natural to a child’s gut
  • Scientifically proven Shown to survive stomach acidity and reach the gut alive
  • With FOS and Vitamin D3 Contains added Fructooligosaccharide (FOS) fibres to increase natural gut bacteria and Vitamin D3 to maintain immune health
  • A more natural option Vegetarian and gluten free, and absolutely no added sugars, artificial flavours or colours
  • Easy to use Comes in a flavourless powder format that can be taken alone or mixed into cool, non-acidic food or drinks. No refrigeration necessary
  • Most trusted by parents Optibac is the brand of friendly bacteria supplements most trusted by parents in the UK^


We also have gummies and liquid drops - view the children's range of friendly bacteria supplements

Optibac Probiotics strains

  • Bifidobacterium breve M-16V®
  • Lactobacillus rhamnosus GG
  • Lactobacillus rhamnosus HN001

Added nutrients

  • Vitamin D3
  • FOS fibres
See full ingredients list

General digestive


Complements gut bacteria

Help & advice

Our team of qualified experts are available for free personalised supplement advice. If you're not sure where to start or your needs have recently changed, please get in touch.

Louise Mason
Louise Mason BA(Hons) DipCNM Nutritional Therapist, DipCNM Naturopath, mANP

Why choose us?

We are the UK's most trusted & recommended brand of friendly bacteria supplements as determined in an independent survey of 1000 people^

We use the most researched strains of friendly bacteria in the world with each supplement designed to target individual needs and life stages.

  • How to use

  • Ingredients

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  • Delivery & returns

  • How to use


    • Best taken with a meal, preferably with breakfast
    • Simply mix with your child's favourite cool, non-acidic foods or drinks – try sprinkling the powder over cereal, mixing it with yogurt, or dissolve in water or milk.
    • Can be taken with formula milk - simply add to the bottle once it has cooled down to room temperature (as heat reduces the viability of natural bacteria).
    • For breastfed babies, powder can be applied to nipple or clean finger for baby to suckle.

    Recommended amount

    Babies & Children can be given to children, from birth to 12 year old with the following recommendations:

    • Give 1 sachet daily.
    • If desired or professionally directed, can be increased to 2 sachets a day

    Looking for a delicious alternative for children aged 3 years+? Try our friendly bacteria fruit gummies for kids.

    Storage Instructions

    Store in a cool, dry place below 25°C and out of direct sunlight.

    If your children prefer drops or gummies, then check out our other highly researched, specifically formulated kids’ products in our Shop.


    Live cultures are not recommended for those with serious medical conditions e.g. those who are severely immunosuppressed, have pancreatitis, are in the ICU, have melaena, have a central venous catheter, short bowel syndrome, or patients with open wounds following major surgery; unless under a doctor's care. Keep out of reach of children.

    Gut health supplements are not intended to prevent, treat or diagnose any medical conditions. If taking probiotic supplements for gut health, note that these should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. If you are taking any medications or have a serious medical condition, consult a doctor before use. Optibac supplements will not cause dependency and may be used on an ongoing basis.

  • Ingredients


    Stabiliser: maltodextrin (natural source); Fructooligosaccharides (FOS 0.5g); Live cultures: Bifidobacterium breve M-16V®, Lactobacillus rhamnosus GG, Lactobacillus rhamnosus HN001; Vitamin D3 (2.5 µg100IU, 50% NRV*)

    *Nutrient Reference Value

    Each sachet contains 3 billion live cultures guaranteed until the date of expiry.


    • Vegetarian
    • No dairy
    • Gluten free
    • Yeast free
    • Soy free
    • GMO free
    • No added sugars
    • Free from artificial flavourings, colourings and preservatives
    • No chemicals or parabens
    Format Powder
    No. Live Cultures 3 billion
    Added Ingredients Vitamin D3
    FOS Fibres
    Recommended Use 1 sachet daily
    Age Range Newborn to 12 years
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  • Delivery & returns

    UK Delivery

    Next dispatch is 8th December, we're sorry for any inconvenience.

    Free UK Delivery over £40 
    Free standard UK delivery is automatically applied at the checkout when you spend £40.

    Standard 2nd class: £2.50
    Allow 4-10 working days (Monday - Friday) for delivery 

    1st class: £3.95
    Allow 1-3 working days (Monday - Friday) for delivery 

    Express Next Day (Tracked): £6.95
    Order before 2pm for 1-2 working day delivery to most of the UK*. Orders placed on Friday will be delivered on Monday (next working day). Requires signature.

    Shipments will be dispatched via DHL or FedEx, the service will be selected depending on the delivery location.

    *Express delivery may exclude the Channel Islands, Herm Island, Isle of Man, Isle of Wight, Northern Irish postcodes BT18 & upwards, Sark, Scottish borders and offshore and a small number of remote mainland destinations as determined by our delivery courier. 

    Good to know

    • We'll send you an email to confirm once your parcel has been dispatched.
    • For delivery queries, please call us on +44 (0)1264 339 770 or email
    • Orders placed before 2pm are typically dispatched on the same working day.
    • Delivery within the UK and Northern Ireland has a fixed price, regardless of the size and weight of your order. 
    • Delivery times are estimates and not guaranteed unless otherwise stated.

    International Delivery

    We offer an excellent worldwide delivery service. For more details, please take a look at our delivery FAQ.


    If you have changed your mind, you can return goods, at your cost, unopened within 14 days for refund or exchange, this does not affect your statutory rights.

Customer Questions

All questions answered by probiotic experts Dr Kate Stephens PhD (Food and Microbial Sciences) BSc(Hons) Medical Biology and Kerry Beeson BSc (Nut. Med.) Nutritional Therapist

Live cultures are very safe1,2 and you can’t ‘overdose’ on them. But in general, it's best to stick to our recommended daily amount of 1-2 sachets - especially if your child takes other vitamin supplements containing Vitamin D – and keep an eye on their daily Vitamin D intake. If you have any concerns, please contact our nutrition team.

Read references

It's best to choose a high-quality children’s live cultures supplement which has been specifically researched and designed for kids. Optibac Babies & Children contains three friendly bacteria strains which have been scientifically tested in thousands of babies and children1,2,3,4,5.

Read references

Optibac Babies & Children is an ideal alternative to BioKult Infantis. Like BioKult Infantis, our friendly bacteria sachets contain added Fructooligosaccharide (FOS) fibres to increase natural gut bacteria, and Vitamin D to support immune health. But unlike BioKult Infantis, Optibac Babies & Children is dairy-free, vegetarian, and contains the world's most researched live cultures strain1, Lactobacillus rhamnosus GG, extensively studied in infants and children.

Read references

Yes, Optibac Babies & Children is vegetarian, and it’s also gluten and dairy-free. There is no dairy present at any stage of the manufacturing and the friendly bacteria strains are vegan, but the added Vitamin D3 is vegetarian. 

Live cultures for children are dietary supplements containing types of friendly bacteria commonly found in a child’s gut. Optibac Babies & Children contains Bifidobacterium breve M-16V® and Lactobacillus rhamnosus GG which have been scientifically researched in children1,2 and are particularly suitable for a child’s developing digestive system. 

Read references

We recommend giving Optibac Babies & Children with the first meal of the day when stomach acidity is at its most neutral. Giving children their friendly bacteria at this time, with food, helps to buffer the delicate live cultures against stomach acids, and ensures that they pass safely through this harsh environment and into the gut.

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