Sunfiber® Prebiotic (PHGG): What It Is, Dose & Research

[ 01 ] Key Facts

Dose in element3	element3 Rise: 3,000mg
Form	Sunfiber® (Partially Hydrolyzed Guar Gum / PHGG) — patented, extensively researched
Signs you may need more	Irregular digestion, bloating, frequent minor infections, dull or reactive skin
Safe range	5,000–21,000mg daily is the range used in research. element3 Rise provides 3,000mg as a well-tolerated foundational dose alongside dietary fibre.

Food sources

Legumes

[ 02 ] Rationale

Why this ingredient is in element3

Prebiotics are the fuel source for your beneficial gut bacteria. While probiotics and postbiotics introduce or mimic bacterial effects, prebiotics ensure the bacteria already living in your gut have the substrates they need to thrive, produce short-chain fatty acids (SCFAs), and maintain the gut barrier. Without adequate prebiotic fibre, even the best probiotic interventions are limited by a lack of microbial fuel.

Sunfiber® is not a generic fibre supplement. It is a patented form of partially hydrolyzed guar gum that has been enzymatically processed to a specific molecular weight, making it fully soluble, tasteless, odourless, and critically, well-tolerated. Unlike psyllium, inulin, or raw guar gum, Sunfiber® does not cause the rapid fermentation that leads to bloating, gas, and cramping. It ferments slowly and predictably in the large intestine, producing butyrate and other SCFAs that nourish colonocytes and support gut barrier integrity.

The 3,000mg dose in element3 Rise provides a meaningful prebiotic foundation that complements dietary fibre intake. Sunfiber® has been studied for its role in supporting regularity and beneficial bacterial populations, and is chosen here for its tolerability at a daily foundational dose.

Within the element3 Rise formula, Sunfiber® supports the underlying microbiome ecosystem that produces neurotransmitter precursors, regulates immune function, and maintains intestinal barrier health. The gut-immune axis is particularly relevant here: approximately 70% of the body’s immune cells reside in gut-associated lymphoid tissue, and their function depends on a healthy, well-fed microbiome.

This is fibre that works quietly, consistently, and without the side effects that make most people stop taking it.

[ 03 ] At 35+

Relevant at 35+

Gut microbiome diversity declines with age, and this decline accelerates during the hormonal transitions of perimenopause. Oestrogen influences gut motility and the composition of the microbiome, so fluctuating levels during the late 30s and 40s can shift the microbial balance toward less favourable species, reduce SCFA production, and affect how the gut barrier functions day to day.

Microbiome diversity supports the everyday work of digestion and normal immune function, which is part of why prebiotic fibre becomes a more common focus at this stage of life.

This is why Sunfiber® sits at the base of element3 Rise. At 3,000mg it provides a consistent daily prebiotic foundation, supporting the beneficial bacteria already living in your gut.

[ 04 ] Your Questions

Your Questions

What is Sunfiber®?

Sunfiber® is a patented, clinically validated prebiotic dietary fibre derived from the guar bean (Cyamopsis tetragonoloba) through a controlled enzymatic hydrolysis process. The result is partially hydrolyzed guar gum (PHGG) — a soluble, flavourless fibre that dissolves completely in water without altering texture. Unlike many fibre supplements, Sunfiber® is specifically designed for tolerance and consistency: it feeds beneficial gut bacteria without the bloating and gas associated with many other prebiotic fibres.

What are the benefits of taking Sunfiber®?

Sunfiber® supports digestive health by selectively feeding Bifidobacterium and Lactobacillus species, the beneficial bacteria most associated with gut health, immune function, and the gut-brain axis. Clinical research indicates it helps regulate bowel consistency, reduce bloating, support healthy gut microbiome diversity, and improve immune markers. At the 3,000mg dose in element3 Rise, it provides a foundational daily prebiotic contribution alongside dietary fibre.

What are the benefits of Sunfiber® in the element3 protocol?

In element3 Rise, Sunfiber® at 3,000mg works in direct partnership with the CP2305® postbiotic: the fibre feeds beneficial gut bacteria, while the postbiotic modulates the neurological signalling those bacteria produce. This pairing supports the full gut-brain axis — microbiome diversity and neural communication simultaneously. Sunfiber® also supports the immune function benefits of RISE by maintaining gut barrier integrity, given that approximately 70% of the immune system is housed in gut-associated lymphoid tissue.

What other Sunfiber® benefits have been found in clinical research?

Clinical research on Sunfiber® has demonstrated improvements in stool consistency and frequency in both constipation and diarrhoea-predominant populations, improved gut microbiome diversity, reductions in markers of gut inflammation, and support for healthy blood glucose regulation. A recent RCT also showed Sunfiber® improved gut dysbiosis in male university rugby players alongside NZ blackcurrant extract.

What is the recommended daily intake of Sunfiber®?

The studied therapeutic range for Sunfiber® (PHGG) in clinical trials is 5,000–21,000mg per day. element3 Rise provides 3,000mg per serve — a well-tolerated foundational dose designed to provide consistent daily prebiotic support within a comprehensive formula, complementing fibre from dietary sources. For individuals with specific digestive goals, higher doses of Sunfiber® are available as standalone products. The 3,000mg in element3 Rise is chosen to be effective without contributing to digestive discomfort in a multi-ingredient powdered drink.

What food provides Sunfiber®?

Sunfiber® is derived from guar beans (cluster beans), which are used in Indian and Pakistani cuisine. Guar gum itself is also used as a food additive in dairy products, sauces, and gluten-free baked goods. However, the Sunfiber® form — partially hydrolyzed guar gum — is a specific patented processing of guar that is not available from whole food sources. The hydrolysis process is what gives Sunfiber® its distinctive tolerability profile and consistent prebiotic activity.

Are there any Sunfiber® side effects?

Sunfiber® is well-tolerated and has a strong safety record in clinical trials. Unlike many prebiotic fibres, it is specifically noted for producing minimal bloating and gas, even at higher doses — a common complaint with inulin, FOS, and psyllium. The 3,000mg dose in element3 Rise is within the range where most people experience no digestive discomfort. When first adding any prebiotic fibre to your routine, mild and temporary changes in digestive patterns are possible as your microbiome adjusts; these typically resolve within 1–2 weeks.

What are Sunfiber® deficiency symptoms?

There is no specific deficiency state for Sunfiber®. However, insufficient dietary fibre overall — which is common, with most women falling well short of the 25g daily recommendation — is associated with poor microbiome diversity, irregular digestion, bloating, weakened immune function, and dull or reactive skin.

What form of prebiotic fibre is in the element3 blend?

element3 Rise uses Sunfiber® — a patented, clinically validated form of partially hydrolyzed guar gum (PHGG). This specific form was chosen over other prebiotic fibres (such as inulin, FOS, or acacia fibre) for three reasons: its tolerability profile (minimal gas and bloating at therapeutic doses), its extensive clinical research base demonstrating selective feeding of Bifidobacterium and Lactobacillus species, and its complete solubility in RISE’s powdered drink format without affecting taste or texture.

What is the difference between a prebiotic and a probiotic?

Probiotics are live bacteria that you introduce to your gut. Prebiotics are specific types of fibre that feed the beneficial bacteria already living there. Both are important: prebiotics ensure your existing microbiome has the fuel to function, while probiotics or postbiotics can introduce or mimic specific bacterial effects.

Does Sunfiber® cause bloating?

Sunfiber® (PHGG) is processed to ferment slowly and predictably in the large intestine, which is why it is among the best-tolerated prebiotic fibres. It has over 200 published studies behind it, and is included in element3 Rise at 3,000mg for consistent, comfortable microbiome support.

How much prebiotic fibre do I need per day?

Research suggests 5–21g of prebiotic fibre daily for optimal microbiome support. element3 Rise provides 3g (3,000mg) of Sunfiber® as a foundational dose, designed to complement the fibre you obtain from vegetables, fruit, and whole grains in your diet.

Is partially hydrolyzed guar gum safe?

Yes. PHGG (Sunfiber®) has been extensively studied and has GRAS (Generally Recognised as Safe) status. It is well tolerated, and has been used in clinical nutrition and medical foods for decades.

[ 05 ] The Research

3 studies

The Research

Study	Key finding	Read
Effect of repeated consumption of partially hydrolyzed guar gum on fecal characteristics and gut microbiota: A randomized, double-blind, placebo-controlled, and parallel-group clinical trialYasukawa, Z., Inoue, R., Ozeki, M., Okubo, T., Takagi, T., Honda, A., & Naito, Y. (2019). Effect of repeated consumption of partially hydrolyzed guar gum on fecal characteristics and gut microbiota: A randomized, double-blind, placebo-controlled, and parallel-group clinical trial. Nutrients, 11(9), 2170. https://doi.org/10.3390/nu11092170	Daily Sunfiber® normalised stool form and significantly increased beneficial Bifidobacterium and butyrate-producing bacteria in healthy adults.	Read →
Prebiotic effects of partially hydrolyzed guar gum on the composition and function of the human microbiota — Results from the PAGODA trialReider, S. J., Moosmang, S., Tragust, J., Trgovec-Greif, L., Tragust, S., Perschy, L., Przysiecki, N., Sturm, S., Tilg, H., Stuppner, H., Rattei, T., & Moschen, A. R. (2020). Prebiotic effects of partially hydrolyzed guar gum on the composition and function of the human microbiota — Results from the PAGODA trial. Nutrients, 12(5), 1257. https://doi.org/10.3390/nu12051257	Partially hydrolyzed guar gum produced clear prebiotic shifts in microbiome composition and function in a placebo-controlled trial.	Read →
Effects of blackcurrant extract and partially hydrolyzed guar gum intake on gut dysbiosis in male university rugby playersMiura, H., Oda, M., Abe, K., Ikeda, H., Fujibayashi, M., Oda, N., Segawa, T., Abe, A., Ueta, N., Tsukahara, T., Takagi, T., Naito, Y., & Inoue, R. (2025). Effects of blackcurrant extract and partially hydrolyzed guar gum intake on gut dysbiosis in male university rugby players. Microorganisms, 13(7), 1561.	Sunfiber® combined with blackcurrant extract attenuated stress-related gut dysbiosis in athletes under heavy training load.	Read →

[ 06 ] In the Protocol

Where Sunfiber® Prebiotic Guar Gum Fibre sits in the element3 Protocol

In element3 Rise (AM Formula), Sunfiber® at 3,000mg provides the prebiotic foundation of the formula, feeding the beneficial bacteria already living in your gut. It works alongside the B vitamins in element3 Rise, which support normal nervous system function. Taken in the morning, Sunfiber® is tasteless and odourless, designed to work quietly in the background supporting digestion and normal immune function.

You can learn more about the full element3 ingredient philosophy at element3.co.nz.

Sunfiber^® Prebiotic Guar Gum Fibre