Partially Hydrolyzed Guar Gum (PHGG): Everything You Need to Know

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✓ Expert Review by: 
Derek Timm, PhD, RDN

Partially Hydrolyzed Guar Gum (PHGG) is a water-soluble, prebiotic dietary fiber with a wide range of clinically validated health benefits. It is the invisible fiber with visible benefits. 

We’ve assembled helpful resources about PHGG, including its science-backed benefits and how it compares with other common dietary fiber supplements.

Partially Hydrolyzed Guar Gum (PHGG)

What is PHGG (Partially Hydrolyzed Guar Gum)?

PHGG, also known as guar fiber, is a natural, galactomannan-based soluble dietary fiber made from enzymatically hydrolyzed guar gum. PHGG may be labeled as guar fiber in the ingredient list of foods, beverages and dietary supplements.

It is a soluble, transparent and tasteless dietary fiber. PHGG is low in viscosity, stable at various pH levels, and is resistant to heat, acid and digestive enzymes. 

While both PHGG and guar gum come from the same plant, and both promote production of healthy short chain fatty acids, they also have very different properties. Guar gum is viscous. It swells with water, creating a gel, which makes it useful as a food thickener and stabilizer.

PHGG has a low viscosity and is used to add fiber to various foods and dietary supplements. The hydrolyzation process used to produce PHGG breaks guar gum into smaller units. This greatly decreases its viscosity, enabling PHGG particles to dissolve more readily, while maintaining its original fiber content.

Guar Fiber

Partially Hydrolyzed Guar Gum (PHGG) Benefits

PHGG is recognized for its many health benefits.

  • As a prebiotic fiber, it nourishes and stimulates the growth and function of healthy gut microbiota.*
  • It alleviates occasional constipation and diarrhea by helping food move through the gut at the right pace; this improves stool consistency and regularity of bowel movements.*
  • It reduces post-meal blood sugar spikes by decreasing the glycemic index of foods.*
  • It supports weight management by helping people to feel less hungry and fuller after eating.*
  • It is effective at managing IBS-related gastrointestinal symptoms including regularity, abdominal pain, gas and bloating.*
  • It helps lower serum cholesterol.*
  • It helps promote iron absorption (serum ferritin)*
Partially Hydrolyzed Guar Gum (PHGG) - ICON

Low FODMAP** and Gluten Free

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Tasteless, Odorless and Clear-mixing

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Meets the FDA definition of dietary fiber

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Reduces the Glycemic Index*

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Supports weight management*

Partially Hydrolyzed Guar Gum (PHGG) Research

 

Explore the extensive body of research and clinical studies validating PHGG’s numerous health benefits, ranging from digestive health and glycemic control to weight management.

Tolerability and safety of a semi-elemental enteral formula with partially hydrolyzed guar gum (PHGG) in tube-fed children aged 1-4 years

Author(s): Gerard Minor, Timothy Sentongo, Ralf G. Heine, Boutaina Zemrani
Location: Clinical Nutrition ESPEN Vol. 55 p 392–399 April 20, 2023
Read Full StudyDownload PDF Here

Effects of partially hydrolyzed guar gums of different molecular weights on a human intestinal in vitro fermentation model

Author(s): Daisuke Sasaki, Kengo Sasaki, Aya Abe, Makoto Ozeki, and Akihiko Kondo
Location: Journal of Bioscience and Bioengineering VOL. 136 No. 1, 67e73, 2023
Read Full StudyDownload PDF Here

Efficacy of a prebiotic formulation for treatment of functional constipation and associated gastrointestinal symptoms in adults

Author(s): Elizabeth Steels, Rene Erhardt, Joanna E. Harnett, Vanessa Vigar, Kathryn J. Steadman
Location: Advances in Integrative Medicine 10 (2023) 43–50
Read Full StudyDownload PDF Here

Effectiveness of Partially Hydrolyzed Guar Gum on Cognitive Function and Sleep Efficiency in Healthy Elderly Subjects in a Randomized, Double-Blind, Placebo-Controlled, and Parallel-Group Study

Author(s): Aya Abe, Mahendra Parkash Kapoor, So Morishima, Makoto Ozeki, Norio Sato, Tsuyoshi Takara and Yuji Naito
Location: Nutrients 2024, 16, 1211. https://doi.org/10.3390/nu16081211
Read Full StudyDownload PDF Here

The Dose Response Effects of Partially Hydrolyzed Guar Gum on Gut Microbiome of Healthy Adults

Author(s): Megan Edelman, Qi Wang, Rylee Ahnen and Joanne Slavin
Location: Applied Microbiology 2024, 4, 720–730. https://doi.org/10.3390/applmicrobiol4020049
Read Full StudyDownload PDF Here

Role of Baseline Gut Microbiota on Response to Fiber Intervention in Individuals with Irritable Bowel Syndrome

Author(s): Jerry Zhou and Vincent Ho
Location: Nutrients 2023, 15, 4786. https://doi.org/10.3390/nu15224786
Read Full StudyDownload PDF Here

Partially hydrolyzed guar gum is associated with improvement in gut health, sleep, and motivation among healthy subjects

Author: Abe, et al
Location: J Clin Biochem Nutr. 2023, 72, 189-197
Read Full Studyhttps://pubmed.ncbi.nlm.nih.gov/36936875/

Lower rate of water absorption of an oral rehydration solution with partially hydrolyzed guar gum in conscious rats.

Author: Takahashi, et al.
Location: Nutrients. 2022, 14, 4231
Read Full Study: https://pubmed.ncbi.nlm.nih.gov/35916813/

Continuous partially hydrolyzed guar gum intake reduces cold-like symptoms: a randomized, placebo-controlled, double-blinded trial in healthy adults.

Author: Sakai, et al.
Location: Nutrition. s. Eur Rev Med Pharmacol Sci. 2022
Read Full Study: https://pubmed.ncbi.nlm.nih.gov/35916813/

Water-soluble dietary fiber alleviates cancer-induced muscle wasting through changes in gut microenvironment in mice.

Author: Sakakida, et al.
Location: Cancer Sci. 2022, 113, 1789-1800.
Read Full Study: https://pubmed.ncbi.nlm.nih.gov/35201655/

Soluble Fiber PHGG

Soluble fiber is a dietary (plant) fiber that dissolves in water. The right soluble fiber supports good digestion, feeds beneficial bacteria, attenuates glucose absorption, lowers cholesterol and reduces hunger (increases satiety). Just be careful. Consuming some soluble fibers may lead to additional gas, bloating and worse: loose stools.

As a soluble fiber supplement, PHGG is well tolerated. This truly regulating soluble fiber moves through your body at a comfortable pace, without causing the excess gas or bloating associated with other fibers.*

Soluble fiber has specific benefits for gut health. It promotes the production of healthy short-chain fatty acids such as butyrate, which provide energy for the digestive tract, supporting the colon’s barrier function. Numerous human clinical studies show that PHGG increases both Bifidobacteria and Lactobacillus levels.* These good bacteria promote a healthy gut microbiota.*

PHGG - Difference Between Soluble Fiber and Insoluble Fiber

Is Partially Hydrolyzed Guar Gum a good source of soluble fiber?

Yes, Partially Hydrolyzed Guar Gum (PHGG) is an excellent source of soluble fiber. Derived from guar beans, also known as cluster beans, PHGG is rich in soluble prebiotic fiber that offers numerous health benefits. It dissolves easily in water, making it a convenient and effective way to increase your daily fiber intake.

PHGG Prebiotic

In the simplest terms, a prebiotic is nourishment for your gut probiotics, keeping the bacteria in your digestive system (gut microbiome) in balance.Newer scientific findings link the gut microbiome with the immune system and potentially mood. That’s because the gut, with the help of good bacteria, can create the neurotransmitters serotonin and dopamine. When the gut is out of balance, you don’t feel well.

Prebiotic PHGG may also benefit a number of gastrointestinal disorders such as occasional constipation, occasional diarrhea or Irritable Bowel Syndrome. It can also be helpful in supporting weight management by increasing the feeling of satiety after eating.

Partially Hydrolyzed Guar Gum (PHGG) = Sunfiber

Sunfiber PHGG is proven effective by more than 100 clinical studies for digestive health, gut health, glycemic control and satiety, without the typical side effects found with other fibers. It enables product formulators to bring the real benefits of this truly regulating fiber to consumers who are looking for a unique, more comfortable fiber source. Sunfiber delivers clinically substantiated health benefits and qualifies as a dietary fiber under the FDA’s stringent definition.

Partially Hydrolyzed Guar Gum (PHGG) Supplier

Sunfiber PHGG is a product of Taiyo International, a pioneer in the research and manufacture of functional ingredients for the food, beverage and nutraceutical industries. The company’s commitment to transparency and sustainability extend from the farmers who grow the guar beans to the state-of-the-art processing facility.

When mixed with water, Sunfiber PHGG is tasteless, colorless, odorless and has low viscosity. It is easy to work with and pleasant to consume.

Sunfiber PHGG is further distinguished by its extensive certifications: 

Monash University Low FODMAP Certified
glyphosate
Non GMO Project Verified
USDA Organic
gluten free
Informed Ingredient
Kosher Icon
Vegan
halal

Sunfiber PHGG is also self-affirmed GRAS, is 100% gluten free, and is still the only fiber that can use the Health Canada-approved health claims for IBS.

Sunfiber is known for its versatility. In addition to its use as a powder dietary supplement, Sunfiber PHGG can be incorporated into all foods or beverages to increase fiber content without affecting taste or texture. It also exhibits excellent stability with respect to pH, heat and freeze/thaw conditions.

To learn how to purchase in bulk, or to request a sample, click here.

 

PHGG Supplements

PHGG is well tolerated as a dietary fiber supplement. Unlike other dietary fiber supplement sources, PHGG is unlikely to add to feelings of bloating, cramping and increased gas production. Because it dissolves completely, it will not turn into a gloppy gel that may be challenging to consume. PHGG may also be listed on product labels as guar fiber or Sunfiber.

Learn More About Partially Hydrolyzed Guar Gum (PHGG)

Our blog answers additional information about the benefits of fiber and how to get your recommended daily intake.

Fiber for IBS: The right fiber may help manage symptoms

Fiber for IBS: The right fiber may help manage symptoms

Get to know Sunfiber, a Unique Soluble Prebiotic

Get to know Sunfiber, a Unique Soluble Prebiotic

New research demonstrates Sunfiber helps manage common cold symptoms

New research demonstrates Sunfiber helps manage common cold symptoms

Sneaking more fiber into your diet may have another woman’s health benefit

Sneaking more fiber into your diet may have another woman’s health benefit

Water and Fiber: How to address two common digestive shortfalls at once

Water and Fiber: How to address two common digestive shortfalls at once

The right fiber may help manage IBS symptoms

The right fiber may help manage IBS symptoms

Fiber for Athletes: Help for athletes experiencing sudden bathroom urges

Fiber for Athletes: Help for athletes experiencing sudden bathroom urges

Pilot study associates fiber intake with improved fertility

Pilot study associates fiber intake with improved fertility

Put the brakes on mindless snacking & keep the pounds off

Put the brakes on mindless snacking & keep the pounds off

Still hungry? Studies find that PHGG soluble fiber may help you eat less at mealtimes.

Still hungry? Studies find that PHGG soluble fiber may help you eat less at mealtimes.

Four surprising facts about constipation

Four surprising facts about constipation

IBS Awareness Month: Researchers find more evidence that PHGG may help

IBS Awareness Month: Researchers find more evidence that PHGG may help

Partially Hydrolyzed Guar Gum Overview: Key Takeaways

Partially Hydrolyzed Guar Gum (PHGG or guar fiber) is an excellent source of soluble fiber and very well tolerated. It is tasteless, odorless and colorless, and has low viscosity, making it suitable as a standalone fiber supplement as well as for a broad range of food and beverage applications.

The benefits of PHGG have been extensively studied, and include nourishing healthy gut microbiota, improving stool consistency and regularity, increasing satiety, decreasing blood sugar spikes, and managing IBS-related gastrointestinal symptoms.

PHGG supplements such as Sunfiber are a well-tolerated, reliable option for increasing soluble fiber intake without experiencing the additional gas or bloating associated with some other types of fiber supplements.

All these helpful facts about PHGG have been written by fiber expert Derek Timm, PhD, RDN. Let us know if you have any further questions and we’ll be happy to help.

*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.