Quick Summary
Sunfiber® PHGG (Partially Hydrolysed Guar Gum) is a clinically researched prebiotic fibre that helps nourish the beneficial bacteria already living in your gut. Unlike some traditional prebiotic fibres, it's widely recognised for being gentle on the digestive system and is generally less likely to cause bloating or excess gas. That's one of the reasons it's becoming an increasingly popular ingredient in gut health and travel health products.
Quick Answer
What is Sunfiber® PHGG?
Sunfiber® PHGG is a soluble prebiotic fibre made from guar beans. Unlike a probiotic, which introduces beneficial microorganisms into your gut, a prebiotic provides nourishment for the beneficial bacteria that are already there. Together, they work in complementary ways to support a healthy gut microbiome.
Why This Matters
Most people have heard of probiotics.
Far fewer have heard of prebiotics.
And almost nobody has heard of Sunfiber® PHGG.
Yet it was one of the very first ingredients we chose when developing The Belly Solution's Probiotic + Prebiotic + Electrolyte Rehydration Formula.
Why?
Because when we began researching travellers' diarrhoea and travel gut health, one thing became obvious:
Supporting your gut isn't just about adding beneficial microorganisms—it's also about helping the beneficial microorganisms you already have to thrive.
That's where prebiotics come in.
1. Think of Your Gut Like a Garden
Imagine planting a beautiful garden.
You choose healthy plants.
You put them into the soil.
Then...
...you never water or feed them.
They probably won't thrive.
Your gut works in a similar way.
A probiotic introduces beneficial microorganisms.
A prebiotic provides nourishment for those beneficial microorganisms.
Think of it this way:
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Probiotic = the seeds
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Prebiotic = the fertiliser
One introduces.
The other nourishes.
That's why many modern gut health products combine both.
💡 Did You Know?
Your gut contains trillions of microorganisms collectively known as the gut microbiome. Many scientists now consider it one of the body's most important ecosystems, playing a significant role in digestive health and overall wellbeing.
2. So Why Did We Choose Sunfiber® PHGG?
Not all prebiotic fibres behave the same way.
Some people find that certain fibres can cause bloating, excess gas or abdominal discomfort.
Sunfiber® PHGG stood out to us for a different reason.
It's one of the most clinically researched prebiotic fibres available and is recognised for being gentle on the digestive system.
Compared with some traditional prebiotic fibres, it's generally less likely to cause:
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Excess bloating
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Gas
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Abdominal discomfort
That made it an obvious choice for a travel health product designed to support digestive comfort.
3. It's Certified Low FODMAP
Another reason we selected Sunfiber® PHGG is that it is certified Low FODMAP.
For many people with sensitive digestive systems, that's an important consideration.
As always, individual responses vary, and anyone following a Low FODMAP diet should seek advice from their healthcare professional.
4. Why That's Helpful When You're Travelling
Travel often changes almost everything your digestive system is used to.
Different food.
Different water.
Different meal times.
Long flights.
Less sleep.
New environments.
These changes can all influence your gut microbiome.
Including a gentle prebiotic fibre as part of your travel routine may help support your beneficial gut bacteria during these changes.
5. It's Easy to Take Wherever You Travel
Nobody wants to worry about refrigeration while travelling.
One practical advantage of Sunfiber® PHGG is that it dissolves easily into water and many other drinks, with very little impact on taste or texture.
That makes it an easy addition to your travel routine, whether you're flying to Bali, cruising through Europe or exploring South America.
Always follow the manufacturer's directions for use.
What Should You Look For?
If you're comparing products containing prebiotic fibre, ask yourself:
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Which prebiotic fibre has been used?
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Why was this particular fibre chosen?
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Is the amount clearly stated?
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Does the company explain what the ingredient is designed to do?
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Is the product transparent about all of its active and inactive ingredients?
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Where appropriate, is there an ARTG number (AUST L or AUST R), indicating the product has entered Australia's therapeutic goods regulatory system?
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Can you independently verify the company's claims?
The more transparent a company is, the easier it becomes to make an informed purchasing decision.
Frequently Asked Questions
Is Sunfiber® PHGG a probiotic?
No.
Sunfiber® PHGG is a prebiotic fibre.
It doesn't add beneficial microorganisms to your gut. Instead, it helps nourish the beneficial microorganisms that are already there.
Is Sunfiber® PHGG natural?
Yes.
It is produced from guar beans through a specialised process that creates a highly soluble prebiotic fibre.
Will Sunfiber® PHGG cause bloating?
Everyone is different.
However, compared with some traditional prebiotic fibres, Sunfiber® PHGG is widely recognised for being gentle on the digestive system and is generally less likely to cause bloating or excess gas.
Can I take a probiotic and a prebiotic together?
Yes.
In fact, many gut health products combine both because they perform complementary roles within the gut microbiome.
Why is Sunfiber® PHGG used in travel health products?
Travel places extra demands on your digestive system.
A gentle, clinically researched prebiotic fibre may help support your gut microbiome during these changes, which is one reason Sunfiber® PHGG has become an increasingly popular ingredient in travel health formulations.
Evidence Snapshot
Last reviewed: July 2026
Prepared using:
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Peer-reviewed scientific literature
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Published research relating to PHGG and gut microbiome health
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Australian consumer health information
This article is intended for educational purposes and will be reviewed periodically as new research becomes available.
The Bottom Line
Not all prebiotic fibres are the same.
Sunfiber® PHGG has become one of the most researched prebiotic fibres available because of its gentle digestive profile, excellent solubility and ability to nourish beneficial gut bacteria.
Understanding the role of prebiotics—and how they complement probiotics—can help you make more informed decisions about supporting your gut health before, during and after travel.
Continue Your Travel Health Journey
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