What is the Difference Between Probiotics, Prebiotics and Antibiotics?
| Type | What it is | Role |
|---|---|---|
| Probiotics | Live beneficial bacteria | Support gut health as part of everyday diet |
| Prebiotics | Non-digestible dietary fibre | Feed and support the beneficial bacteria already in the gut |
| Antibiotics | Medicines | Kill harmful bacterial infections — a medical intervention, only used when prescribed |
Probiotics and prebiotics work together to maintain a healthy gut microbiome through everyday diet. Antibiotics, by contrast, should only be used when prescribed by a healthcare professional — they are not something to introduce on your own. Understanding the difference helps parents make better daily nutritional decisions and recognise when something requires medical advice rather than a dietary fix.
What are Probiotics and How Do They Work?
Probiotics are live microorganisms that, when consumed in adequate amounts, help maintain the balance of beneficial bacteria in the gut and support both the digestive and immune systems. Approximately 70% of the body's immune system resides in the gut, which is why a healthy gut microbiome is so closely tied to a child's overall resilience against infections — not just their digestion.
Well-researched probiotic strains beneficial for children include Limosilactobacillus reuteri (L. reuteri), Lactobacillus, and Bifidobacterium, each with specific demonstrated benefits for digestive comfort and immune support.
What are Prebiotics and Why Does Your Child Need Them?
Prebiotics are non-digestible dietary fibres that act as food for beneficial gut bacteria, stimulating their growth and activity in the intestine. Without enough prebiotic fibre, even a good probiotic intake has less to work with.
Unlike probiotics, prebiotics are not affected by heat, cold, or stomach acid, which makes them stable and effective when consumed through everyday cooked or raw foods.
Natural prebiotic sources for children include:
- Apple skin
- Bananas
- Oats
- Garlic
- Onions
Incorporating these regularly into meals supports a balanced gut microbiome over time, rather than relying on any single "superfood."
What are Antibiotics and When Should They Be Used?
Antibiotics are man-made medicines that fight bacterial infections by killing harmful bacteria or preventing them from reproducing. They are not effective against viral infections such as the common cold or flu, which is why a doctor won't prescribe them for every illness.
Antibiotics should only be administered when prescribed by a doctor. Misuse — including stopping a course early or using leftover antibiotics from a previous illness — contributes to antibiotic resistance, a growing global health concern.
A key side effect of antibiotic use is that it can also destroy beneficial gut bacteria alongside harmful ones, disrupting the gut microbiome balance even as it clears the infection.
How Probiotics Help After Antibiotic Treatment
A 2024 clinical study found that probiotic supplementation during and after antibiotic treatment in children significantly reduced the risk of antibiotic-associated diarrhoea (AAD), one of the most common side effects of antibiotic use in young children. Probiotic strains such as Lactobacillus rhamnosus GG and Saccharomyces boulardii have shown consistent evidence in reducing AAD duration and severity in children.
Timing matters when giving both together — some research suggests spacing probiotic and antibiotic doses by at least 2 hours to help preserve the probiotic's effectiveness. Since antibiotic regimens vary by medication and condition, it's best to confirm the right timing for your child's specific treatment with your paediatrician.
How to Include Probiotics and Prebiotics in Your Child's Daily Diet
Natural food sources of probiotics include plain yogurt, kefir, tempeh, and miso. Introduce these gradually and in age-appropriate portions, watching for how well your child tolerates them.
Prebiotic-rich foods such as bananas, oats, and vegetables can be incorporated easily into everyday meals and snacks from 6 months onwards alongside complementary feeding.
For children aged 1 to 3 years, fortified growing-up milk containing clinically researched probiotic strains such as L. reuteri offers a convenient and consistent daily probiotic source alongside essential vitamins and minerals. LACTOGROW PROBIO, for example, is scientifically formulated with L. reuteri probiotics and carefully crafted to support tummy comfort and reduce the risk of constipation in children aged 1 to 3.
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