Ingredient-level evidence · Human studies first · Limitations published

BIOMEWARD

Research

The evidence, in full.

Every ingredient in BIOMEWARD was chosen because published human research exists behind it. This page sets out that research, the doses that were actually tested, and the points where the evidence stops.

Last reviewed 2 August 2026 · Written for customers, not for clinicians

5 ingredients with published research
3 human intervention studies
2 systematic reviews
0 studies on the finished blend

How we read the evidence

Four rules we hold ourselves to.

Supplement marketing usually cites research the reader is not expected to check. We would rather you checked.

  1. Human first We lead with studies in people. Cell and animal work can suggest a mechanism, but it cannot stand in for a human result.
  2. Ingredient level Each study tested a single ingredient, not BIOMEWARD. A result for one fibre does not transfer to a blend containing it.
  3. Dose stated We publish the dose each study used, because an effect at 15 g a day says nothing about a smaller amount.
  4. Limits published Every entry below ends with what its study cannot tell you. Those notes are part of the evidence, not a disclaimer bolted on.

Starting point

Most Australian adults fall short on fibre.

The NHMRC sets an Adequate Intake for dietary fibre of 25 g a day for women and 30 g a day for men. National dietary surveys have repeatedly found average intakes below those figures.

That gap is the reason a fibre supplement exists at all. It is not a reason to expect a supplement to replace food. Whole grains, legumes, fruit and vegetables remain the best source of fibre, and a daily scoop is a top-up rather than a substitute.

NHMRC Nutrient Reference Values

At a glance

Where each ingredient sits.

Strength is our own reading of the evidence base, not a regulatory classification. Full detail for each row follows below.

Ingredient Evidence type Dose studied Our reading
PHGG Human clinical trial Up to 15 g daily Strongest
Acacia gum Human dietary study 10 g or 15 g daily Strong
Resistant potato starch Randomised controlled trial 3.5 g and 7 g daily Strong
Oat beta-glucan Systematic review Varies by included study Indirect
Grape seed extract Systematic review Varies by included study Emerging

Ingredient by ingredient

The five studies, in detail.

01

PHGG

Partially hydrolysed guar gum

Design
Human clinical trial (the PAGODA trial)
Participants
20 healthy adults
Dose
Up to 15 g daily
Duration
Three-week intervention phase

What it is

A soluble prebiotic fibre made by breaking guar gum into shorter chains. That processing is what lets it dissolve into a drink without the thickness raw guar gum produces, which is why it works as the base of a daily scoop.

What the study found

“In healthy subjects, PHGG had significant effects on stool frequency and consistency.”

The trial also tracked microbial composition and fermentation metabolites, which is the mechanism a prebiotic is supposed to act through: bacteria in the large bowel ferment the fibre and produce short-chain fatty acids.

What it does not show

The trial studied PHGG on its own, not the finished BIOMEWARD blend, and it ran in healthy adults over three weeks. It is not evidence for treating a digestive condition, and it says nothing about doses below the amount tested.

Read the PAGODA trial

02

Acacia gum

Fermentable soluble fibre

Design
Human dietary study
Participants
Healthy participants
Dose
10 g or 15 g daily
Duration
10 days

What it is

A soluble fibre tapped from acacia trees. It ferments slowly and further along the bowel than some fibres, which is the usual explanation for why it tends to be well tolerated.

What the study found

“GUM is a very well tolerated dietary fibre with bifidogenic properties believed to benefit intestinal health.”

Bifidogenic means it increased bifidobacteria, a bacterial group commonly used as a marker of a prebiotic effect. The study also recorded increases in lactic-acid-producing bacteria.

What it does not show

Both the bifidogenic and the tolerance findings were specific to the doses tested. Ten days is a short window, and a change in a bacterial marker is not the same as a change in how someone feels.

Read the acacia study

03

Resistant potato starch

A fermentable resistant starch

Design
Randomised, double-blind, placebo-controlled trial
Comparison
Active doses against placebo
Dose
3.5 g and 7 g daily
Duration
Four weeks

What it is

A starch that resists digestion in the small intestine and arrives in the large bowel largely intact, where gut bacteria can ferment it. It behaves more like a fibre than a starch.

What the study found

“Participants consuming 3.5 g/day of RPS experienced significantly greater changes in Bifidobacterium and Akkermansia compared to the placebo.”

This is the strongest study design in the list. Randomising participants and comparing against a placebo is what separates a real effect from expectation, and the result appeared at the lower of the two doses tested.

What it does not show

Fermentation responses vary between individuals and depend on the microbiome someone starts with. A shift in two bacterial genera over four weeks is a promising signal, not a health outcome.

Read the resistant starch trial

04

Oat beta-glucan

Soluble oat fibre

Design
Systematic review
Evidence pooled
Randomised, nonrandomised, observational and in-vitro studies
Dose
Varies across the included studies
Subject
Oat intake rather than isolated beta-glucan

What it is

A soluble fibre found naturally in oats, with a different molecular structure to the other fibres in the blend. Variety matters here, because different bacteria ferment different substrates.

What the review found

“Oat intake increased total bacterial count, Lactobacilli spp., and Bifidobacterium spp.”

A systematic review gathers the available studies against a set method rather than reporting a single experiment, so it gives a broader view at the cost of precision.

What it does not show

This is the weakest link between study and ingredient on the page. Whole-oat research does not automatically establish the effect of an isolated beta-glucan dose, and the review includes in-vitro work that was never in a person.

Read the oat review

05

Grape seed extract

A source of grape polyphenols

Design
Systematic review
Evidence pooled
Seven relevant human trials
Subject
Grape and red-wine polyphenols
Status
Emerging research area

What it is

A concentrated botanical extract containing polyphenols. It is the one ingredient in the blend that is not a fibre. Gut microbes can transform dietary polyphenols into other metabolites, and that interaction is what the research is examining.

What the review found

“Additional research is required to fully understand the complex relationship.”

We have quoted the review's own caution rather than a headline finding, because that caution is the honest summary of where this ingredient sits.

What it does not show

Grape seed extract is not proven to improve the microbiome. It is in the blend as a plant-compound complement to the fibres, and we are not going to describe it as anything more settled than that.

Read the polyphenol review

The honest part

What this evidence does not show.

Claims we will not make

  • Treats constipation or relieves IBS
  • Stops bloating or heals the gut
  • Detoxes the body or promotes weight loss
  • Clinically proven or guaranteed results

Dose is the open question

Each study used a specific daily amount of a single ingredient. A blend that includes five ingredients cannot deliver every one of those amounts in a single scoop. Where our per-serve dose sits below a studied dose, the result from that study does not carry across, and we will publish the final per-serve amounts here once the formula is locked.

Individual response varies

Fibre responses depend on the microbiome you already have, your current fibre intake and the rest of your diet. Ingredient research describes averages across a group. It does not forecast what will happen for any one person, including you.

Plain English

The words the studies use.

Prebiotic

A food component your own body cannot digest, but the beneficial bacteria in your large bowel can use as fuel.

Microbiome

The community of bacteria and other microbes living in your gut. Its make-up differs from person to person.

Short-chain fatty acids

Compounds produced when gut bacteria ferment fibre. They are the main output researchers measure when testing a prebiotic.

Bifidogenic

Increases bifidobacteria, a bacterial group widely used as a marker that a prebiotic is doing something.

Randomised controlled trial

Participants are assigned by chance to the active ingredient or a placebo. The strongest common design for testing an effect.

Systematic review

A structured survey of all studies meeting set criteria. Broader than one trial, but only as reliable as the studies it gathers.

Sources

Check any of it yourself.

Each link opens the published record, where you will find the full citation, the authors and the complete method.

  1. PHGG · the PAGODA trial · human clinical trial pubmed.ncbi.nlm.nih.gov/32354152
  2. Acacia gum · human dietary study doi.org/10.1080/08910600310014377
  3. Resistant potato starch · randomised controlled trial pubmed.ncbi.nlm.nih.gov/37049425
  4. Oat intake and gut bacteria · systematic review sciencedirect.com/science/article/pii/S0022316622003765
  5. Grape and red-wine polyphenols · systematic review pubmed.ncbi.nlm.nih.gov/30195522
  6. Dietary fibre Adequate Intake · NHMRC eatforhealth.gov.au/nutrient-reference-values

The studies above examined individual ingredients, not the finished BIOMEWARD product. They are published here so you can judge the evidence for yourself. BIOMEWARD is a dietary fibre supplement, not a medicine, and is not a substitute for a varied and balanced diet. If you have a diagnosed digestive condition, are pregnant or are taking medication, speak to your doctor before adding a fibre supplement.

The product

Five sources.
One daily scoop.

A refreshing lemon blend that helps nourish the beneficial bacteria already living in your gut, with the research above behind every ingredient in it.

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