PHGG: What Is Partially Hydrolysed Guar Gum and Why We Made It Part of Your Everyday Diet
If you've been searching for a PHGG supplement, you're probably looking for something that can help you get more fibre into your day.
You might want to rethink buying a fibre supplement because we don't see fibre as something you take in addition to a healthy diet.
We see it as part of the diet itself.
The Seed Cycle Gut Fibre isn't a supplement.
Your gut microbes need fibre every day. Your digestive system needs fibre every day. And most of us could benefit from eating a greater variety of fibre-rich foods.
So rather than creating another product to add to your ever-growing supplement cupboard, we created a functional food that makes getting more fibre into your everyday meals simple.
At the centre of the formula is PHGG partially hydrolysed guar gum, a soluble prebiotic fibre with a growing body of human research behind it.
And we didn't stop there.
We combined PHGG with two other complementary fibres and a live bacterial culture to create a simple, once-daily food designed to fit into real life.
What is PHGG?
PHGG stands for partially hydrolysed guar gum.
It starts with guar gum, a natural fibre obtained from the seeds of the guar plant.
Through enzymatic hydrolysis, the guar gum is partially broken down into smaller molecules, creating PHGG.
The result is a soluble, low-viscosity and fermentable fibre.
And that combination is what makes PHGG particularly interesting.
Unlike some fibres that become thick and gel-like when mixed with liquid, PHGG dissolves easily and has very little impact on the texture of food.
That means you can add it to water, yoghurt, smoothies, porridge or your breakfast without turning it into a bowl of gel.
More importantly, PHGG travels to the colon where it can be fermented by your gut microorganisms.
That's why PHGG is considered a prebiotic fibre.
What does a prebiotic actually do?
Your gut isn't just a digestive system.
It is home to a huge community of microorganisms, collectively known as the gut microbiota.
And just like you need food, those microorganisms need substrates they can use too.
Certain types of dietary fibre make it through the digestive tract and reach the colon, where gut microbes ferment them.
PHGG is one of those fibres.
Research has shown that PHGG can influence the composition and activity of the gut microbiota, including increases in beneficial bacteria such as Bifidobacterium. [1]
This is one of the reasons we love PHGG.
It's not simply about adding "more fibre."
It's about giving your gut microbes something to work with.
Why PHGG has become so interesting for gut health
There is a growing body of human research looking at PHGG and gastrointestinal function.
Researchers have studied PHGG in areas including:
-
Bowel regularity
-
Stool consistency
-
Bloating
-
Gas
-
IBS symptoms
-
Gut microbiota
-
Fibre tolerance
A clinical review of PHGG describes it as a well-tolerated soluble fibre that has been investigated across a range of gastrointestinal settings. [2]
And several randomised controlled trials have explored what happens when people take PHGG consistently over several weeks.
That's important because fibre isn't an instant fix.
Your gut ecosystem needs time to adapt.
How long does PHGG take to work?
This is one of the most common questions we get.
And the honest answer is:
It depends on the person, the dose, the rest of your diet and what you're hoping to notice.
Clinical studies have measured changes over different time periods.
Some have reported improvements within the first few weeks, while others have followed participants for 8–12 weeks.
For example, one study investigating PHGG in IBS used a 6 g daily dose for 12 weeks and found improvements in bloating and bloating-plus-gas compared with placebo. [3]
Another study followed healthy adults taking PHGG for three months and observed changes in stool form and gut microbiota. [1]
Other research has measured changes over around four weeks. [4]
So rather than promising that you'll notice a particular result in exactly seven days, we prefer to think about PHGG as a daily nutritional habit.
Some people notice changes in their digestion relatively quickly.
For others, it can take a few weeks of consistent use.
Give your gut time to adjust.
If you're new to supplemental fibre, starting with a smaller amount and gradually increasing is often a more comfortable approach.
What the research says about PHGG and bloating
Bloating is one of the reasons people are particularly interested in PHGG.
A randomised, double-blind, placebo-controlled study involving 108 people with IBS investigated 6 g of PHGG daily for 12 weeks.
The researchers reported significant improvements in bloating and bloating-plus-gas scores compared with placebo. They also reported that PHGG was well tolerated. [3]
That doesn't mean PHGG is a treatment for IBS.
It means there is human research suggesting that this particular type of fibre may be useful when incorporated into the diet of people experiencing certain gastrointestinal symptoms.
And that's an important distinction.
We don't sell Gut Fibre as an IBS treatment.
We created it as a food to help make getting enough fibre easier.
PHGG and bowel regularity
PHGG has also been studied for bowel function.
Research has investigated its effects on stool consistency, bowel frequency and gastrointestinal symptoms in different populations.
One randomised study in people with constipation-predominant IBS found improvements in gastrointestinal symptoms, stool consistency and colonic transit time following PHGG supplementation. [5]
Another study investigated 5 g of PHGG daily in older adults with chronic constipation and assessed changes in bowel function over four weeks. [4]
There is also research comparing PHGG with wheat bran in people with IBS.
In a multicentre study involving 188 adults, participants received either 5 g of PHGG or 30 g of wheat bran daily.
Both groups experienced improvements, but PHGG was well tolerated and was preferred by more participants. [6]
Again, these studies don't mean that everyone needs PHGG.
They show why this particular fibre has become interesting enough to study in humans.
Why we didn't just make a PHGG powder
This is where our approach differs.
You can buy PHGG on its own.
But we didn't want to create another single-fibre product and stop there.
Your gut doesn't eat isolated nutrients in nature.
It encounters a variety of fibres from a variety of foods.
So we wanted to reflect that idea in our formula.
Three fibres. Three different characteristics.
PHGG
Our hero prebiotic fibre.
We use 5 g per serve, a meaningful amount that sits within the range used in human research.
Organic acacia fibre
Another soluble, fermentable fibre that complements PHGG.
Organic psyllium husk
A different type of fibre that contributes to the overall fibre content and provides bulking properties.
Then we added:
Bacillus coagulans
A live bacterial culture.
So the finished formula brings together prebiotic fibres and a live culture — a combination known as a synbiotic.
Why 5 g of PHGG matters
This is something we deliberately considered when developing Gut Fibre.
We didn't want to add a tiny amount of PHGG simply because it sounds good on a label.
Our formula provides:
5 g of PHGG per serve.
That's comparable with doses used in several human studies investigating PHGG and gastrointestinal function. [3][4][6]
Then the additional fibres bring the total dietary fibre in each serve to approximately 8 g.
So when you add one scoop to breakfast, you're not just getting a token amount of fibre.
You're making a meaningful contribution to your daily fibre intake.
Gut Fibre isn't a supplement. It's food.
This distinction matters to us.
The word "supplement" suggests something separate from your diet.
Something you take because your diet isn't enough.
But fibre isn't an optional extra your body suddenly discovered in a supplement aisle.
Fibre is food.
It's found naturally in vegetables, fruit, legumes, whole grains, nuts and seeds.
Your gut microbes interact with the fibres that naturally occur in your diet every day.
We created Gut Fibre because modern eating can make getting enough fibre — and enough variety of fibre — surprisingly difficult.
It's designed to supplement your food intake, not replace food.
That's why we call it a functional food.
You don't need to remember a complicated schedule.
You simply add it to something you're already eating.
How to use Gut Fibre
One scoop a day.
That's it.
Add it to:
-
Water
-
Smoothies
-
Yoghurt
-
Porridge
-
Chia pudding
-
Breakfast bowls
-
Your Seed Cycle
Because the flavour is neutral, you don't need to completely change your meal to use it.
New to fibre?
Start with a smaller amount for several days and gradually build towards a full serve.
This can make the transition more comfortable, particularly if your current diet is relatively low in fibre.
And drink plenty of fluids throughout the day.
Why Gut Fibre and Seed Cycling belong together
If you already use The Seed Cycle, this is probably the easiest way to incorporate Gut Fibre.
Seed Cycling gives you a daily serving of nutrient-dense seeds.
Pumpkin.
Flax.
Sunflower.
Sesame.
Together they contribute fibre, healthy fats, plant protein, minerals and essential fatty acids.
Gut Fibre brings a different type of fibre including PHGG, acacia and psyllium plus a live bacterial culture.
So rather than creating another separate routine:
Seed Cycle scoop + Gut Fibre scoop.
Add them to breakfast.
That's it.
It's not about taking more products.
It's about making your daily food more nutritionally supportive.
Who is Gut Fibre for?
Gut Fibre is for anyone who wants an easy way to increase their daily fibre intake.
You might be:
-
Struggling to consistently eat enough fibre-rich foods
-
Looking for a soluble prebiotic fibre
-
Interested in supporting your gut microbiome through diet
-
Wanting to increase fibre without a thick, gritty drink
-
Looking for a simple daily food habit
-
Already seed cycling and wanting to add another type of fibre
You don't need to have a digestive problem to care about fibre.
Fibre is part of everyday nutrition.
What makes The Seed Cycle Gut Fibre different?
We didn't set out to create the biggest fibre blend on the market.
We wanted to create a formula where every ingredient had a reason to be there.
5 g PHGG
Organic acacia fibre
Organic psyllium husk
Bacillus coagulans
8 g total fibre per serve
And nothing unnecessary.
No giant list of ingredients.
No complicated timing.
No "detox" promises.
No claim that one scoop will fix your gut.
Just a thoughtfully formulated functional food that makes adding fibre to your day easier.
The bottom line on PHGG
PHGG — partially hydrolysed guar gum — is a soluble, fermentable prebiotic fibre with a growing body of human research behind it.
Studies have explored its relationship with:
Gut microbiota.
Bowel function.
Stool consistency.
Bloating.
IBS-related symptoms.
And importantly, research has investigated PHGG at meaningful daily doses over several weeks.
But we don't think you need to obsess over PHGG as a miracle ingredient.
Because your gut needs a variety of fibres, not one magic fibre.
That's why we created Gut Fibre as a blend.
And that's why we see it as food first.
One scoop.
One breakfast.
Every day.
Give your gut microbes something to work with. 🌱
Ready to make fibre part of your everyday diet?
If you're looking for a PHGG product in Australia, The Seed Cycle Gut Fibre contains 5 g PHGG per serve, alongside organic acacia fibre, organic psyllium husk and Bacillus coagulans.
8 g total fibre in one daily scoop.
Add it to water, yoghurt, smoothies or breakfast.
Or combine it with your daily Seed Cycle.
Shop The Seed Cycle Gut Fibre →
Because gut health doesn't need another complicated protocol.
Sometimes it just needs more fibre. 🌱
PHGG FAQs
What does PHGG stand for?
PHGG stands for partially hydrolysed guar gum. It is a soluble dietary fibre made by partially breaking down guar gum through enzymatic hydrolysis.
Is PHGG a prebiotic?
Yes. PHGG is a fermentable fibre that can be utilised by gut microorganisms and is commonly classified as a prebiotic fibre.
How long does PHGG take to work?
There isn't one universal timeline. Human studies have measured changes over periods ranging from around four weeks to 12 weeks, with some people noticing digestive changes sooner. Consistent daily intake is more useful than expecting an overnight result.
How much PHGG is in Gut Fibre?
Each serving contains 5 g of PHGG.
Is Gut Fibre a supplement?
No. We consider Gut Fibre a functional food. It is designed to complement your diet by making it easier to increase your daily fibre intake. It isn't intended to replace a varied diet.
Can I take Gut Fibre every day?
Gut Fibre is designed for daily use. If you're new to concentrated fibre, start with a smaller amount and gradually increase as your digestive system adjusts.
Can I take Gut Fibre with Seed Cycling?
Yes. Gut Fibre isn't phase-specific, so you can take it alongside your daily Seed Cycle.
Is PHGG the same as psyllium?
No. They are different fibres with different physical and fermentation characteristics. PHGG is a soluble, low-viscosity fermentable fibre, while psyllium is a gel-forming fibre that contributes to stool bulk.
Why does Gut Fibre contain three fibres?
Because we don't believe there is one "perfect" fibre. PHGG, acacia and psyllium have different properties, so we combined them to create a broader fibre profile.
What is a synbiotic?
A synbiotic combines a prebiotic component with live microorganisms. Gut Fibre contains prebiotic fibres alongside Bacillus coagulans, a live bacterial culture.
Do I need to be seed cycling to use Gut Fibre?
No. Gut Fibre can be used independently of Seed Cycling.
Research
PHGG and gut microbiota
A randomised, double-blind, placebo-controlled trial investigated PHGG in healthy adults and found improvements in stool form alongside changes in gut microbiota, including an increase in Bifidobacterium.
Read the study →
PHGG and bloating in IBS
A randomised, double-blind, placebo-controlled trial involving 108 people with IBS investigated 6 g/day of PHGG for 12 weeks and reported improvements in bloating and bloating-plus-gas scores.
Read the study →
PHGG and IBS
Research in constipation-predominant IBS has investigated PHGG's effects on gastrointestinal symptoms, stool consistency and colonic transit.
Read the study →
PHGG and constipation
A randomised placebo-controlled study investigated 5 g/day of PHGG in older adults with chronic constipation over four weeks.
Read the study →
PHGG compared with wheat bran
A multicentre study involving 188 adults compared 5 g/day PHGG with 30 g/day wheat bran in IBS and found PHGG to be well tolerated and preferred by more participants.
Read the study →
Clinical review of PHGG
A review of PHGG discusses its physicochemical characteristics, gastrointestinal applications and clinical research.
Read the review →
