30-Second Summary

• Travellers' diarrhoea is common in children travelling overseas.

• The biggest concern for younger children is dehydration, which can develop more quickly than in adults.

• Safe food and water choices, good hand hygiene and preparation before you travel can help reduce risk.

• If diarrhoea occurs, replacing lost fluids and electrolytes is particularly important.

• Don't automatically give children adult anti-diarrhoeal medicines — some aren't suitable for young children.

• Know the warning signs and seek medical help promptly if your child is becoming increasingly unwell, can't keep fluids down, has blood in their stool or shows signs of significant dehydration.

Quick Answer

Is travellers' diarrhoea more serious in children?

It can be. Most episodes are manageable, but babies and younger children can become dehydrated more quickly than adults. That's why prevention, early fluid replacement and knowing the warning signs are especially important when travelling with children.

Why This Matters

Travelling with children is brilliant.

Until somebody says:

"Mum... my tummy hurts."

Suddenly you're not thinking about the pool or what you're doing that afternoon.

You're counting trips to the bathroom.

You can't eliminate every risk of travellers' diarrhoea, but you can prepare before you leave, reduce your child's exposure while you're away and know what to do if they become sick.

And with children, one thing deserves particular attention:

Hydration.

1. Why Dehydration Matters More in Children

Babies and young children are particularly vulnerable to dehydration. Diarrhoea — especially when combined with vomiting, heat or poor fluid intake — can cause them to lose fluid quickly.

Watch for:

• Increased thirst or dry mouth

• Urinating less than usual

• Sunken eyes

• Few or no tears when crying

• Unusual tiredness, irritability or reduced responsiveness

If your child develops diarrhoea, don't just watch what's coming out.

Pay attention to what's going in as well.

💡 Did You Know?

By the time a child tells you they're very thirsty, they may already be dehydrated.

That's why replacing fluids early is important.

2. Prepare Before You Leave

Think about what you'd need if your child developed diarrhoea at 2am in a hotel room and the nearest pharmacy was closed.

A sensible family travel-health kit might include:

• Age-appropriate oral rehydration solution (ORS)

• Thermometer

• Regular medications

• Hand sanitiser

• Basic first-aid supplies

• Travel insurance and local medical contact details

If you're travelling somewhere with limited medical facilities, or your child has particular health needs, speak with your doctor, pharmacist or travel-health professional before departure.

3. Little Hands Touch Everything

Good hand hygiene is one of the simplest ways to reduce exposure to the microorganisms that can cause diarrhoea.

Encourage children to:

• Wash their hands before eating and after using the toilet

• Avoid putting fingers in their mouth

• Drink from safe water sources

• Avoid swallowing water while swimming

• Avoid sharing drink bottles and utensils when someone is unwell

And remember the things younger children constantly drop — dummies, drink bottles and toys.

Little hands touch everything.

4. Be Sensible About Food — Without Ruining the Holiday

You don't need to make children frightened of eating overseas.

A few sensible choices can simply reduce unnecessary risk.

Be cautious with food that's been sitting at room temperature, raw or undercooked meat and seafood, unpasteurised dairy, raw produce that may have been washed in unsafe water and food from places where hygiene looks questionable.

Freshly cooked food served piping hot is generally a safer choice.

The goal isn't to stop children experiencing the food and culture of their destination.

It's to reduce avoidable risks.

5. If Diarrhoea Strikes, Think Hydration First

This is the part worth remembering:

Fluids first.

Children lose both water and electrolytes through diarrhoea. Oral rehydration solutions (ORS) are specifically formulated to replace lost fluid and electrolytes and are recommended for children experiencing diarrhoea.

If your child is nauseous or vomiting, small, frequent sips may be easier to tolerate than a large drink at once.

And don't automatically reach for an adult anti-diarrhoeal medicine. Some aren't appropriate for young children.

When in doubt, seek advice from a doctor or pharmacist.

6. Can You Prepare Your Child's Gut Before Travelling?

You can't make a child's digestive system immune to travellers' diarrhoea.

But that doesn't mean preparation is pointless.

Think about the whole picture:

Food and water safety. Hand hygiene. Hydration. Gut health. And having appropriate supplies available if something goes wrong.

If you're considering a probiotic or other therapeutic product, check its age suitability and understand exactly what's in it. Different probiotic strains aren't interchangeable, and products can have very different formulations.

The Belly Solution's Probiotic + Prebiotic + Electrolyte Rehydration Formula is suitable for adults and children aged 3 years and over when used according to the label directions.

The goal isn't to promise your child won't get sick.

It's to look after and best prepare their gut before you leave.

7. When Should You Seek Medical Help?

Seek medical advice promptly if your child:

• Shows signs of significant dehydration

• Is urinating much less than usual

• Can't keep fluids down

• Has blood in their stool

• Has severe abdominal pain

• Has a fever and is becoming increasingly unwell

• Is unusually drowsy, less responsive or not feeding normally

• Has diarrhoea that isn't improving

Babies and very young children require particular caution.

When you're overseas, don't hesitate to seek medical help if you're worried about your child.

Frequently Asked Questions

Is travellers' diarrhoea common in children?

Yes. Diarrhoea is one of the common illnesses experienced by children travelling internationally, although risk varies considerably by destination and exposure.

Why is it more concerning in younger children?

The main concern is dehydration. Young children can lose fluid quickly through diarrhoea and vomiting.

Should children drink plain water if they have diarrhoea?

Fluids are important, but diarrhoea also causes electrolyte loss. An age-appropriate oral rehydration solution (ORS) can replace both fluid and electrolytes.

Can children take anti-diarrhoeal medication?

Don't automatically give children adult anti-diarrhoeal medicines. Some aren't suitable for young children. Ask a doctor or pharmacist what's appropriate for your child's age.

Can children take probiotics before travelling?

Yes, but some aren't suitable for children. Check the specific product, strain, formulation, age restrictions and directions, and if you have any questions ask your healthcare professional.

The Belly Solution's Probiotic + Prebiotic + Electrolyte Rehydration Formula is suitable for children aged 3 years and over when used according to the label directions.

Evidence Snapshot

Last reviewed: August 2026

Prepared using:

• CDC guidance on travelling with children and travellers' diarrhoea

• Australian Healthdirect guidance on childhood diarrhoea and dehydration

• Published medical guidance relating to paediatric hydration and travellers' diarrhoea

This article is intended for educational purposes and doesn't replace individual medical advice.

The Bottom Line

Travellers' diarrhoea can happen to children even when parents are careful.

The difference is being prepared for it.

Before you leave, think about food and water safety, hand hygiene, gut health, hydration and what you'll need if your child becomes unwell.

And if diarrhoea does strike:

Watch the child, not just the bathroom.

Are they drinking? Are they urinating? Are they alert? Are they keeping fluids down?

Prepare their gut. Pack for the possibility. Know the warning signs. Then get on with enjoying the holiday.

Continue Your Travel Health Journey

• What Is Travellers' Diarrhoea? Causes, Symptoms & Why Every Traveller Should Care

• How to Best Prevent Travellers' Diarrhoea: 12 Evidence-Based Ways to Stay Healthy Overseas

• What To Do If You Get Travellers' Diarrhoea: Recovery, Hydration & When to Seek Medical Advice

• Not All Probiotics Are Created Equal: What Every Traveller Should Know