Daily immune support
GlucanGuard Beta-Glucan Immune Support Capsules
250 mg of beta-glucan per capsule on a pure basis, not a concentrate weight. Yeast-derived 1,3/1,6, immune modulation rather than stimulation. Vegan, non-GMO, third-party tested, and 100% traceable.
Ships in 1–2 business days from the U.S.
Third-party tested for purity.
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Vegan Formula
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Traceable Ingredients
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GMP Certified
Dietary supplement. These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.
Label school
How to read a Supplement Facts panel
Most of what separates a good beta-glucan supplement from a weak one is printed on the back of the bottle. Select any line below to see what it tells you, and what to watch for elsewhere.
Supplement Facts
Percent Daily Values are not established for beta-glucan. Manufactured in a cGMP-compliant facility.
Serving size sets every other number
Every figure below the serving size describes that serving, not one capsule. Two labels quoting the same milligram total can differ twofold if one counts a single capsule and the other counts two.
What good looks like
Serving size is stated in capsules and matched by a servings-per-container figure you can divide into the price.
Red flag
A large dose figure that quietly rests on a 3- or 4-capsule serving.
Servings per container is the real price tag
Bottle price divided by servings gives cost per day, the only figure that compares products fairly across bottle sizes.
What good looks like
Servings per container printed plainly, so cost per day is a single division.
Red flag
Capsule count on the front of the bottle with no servings figure on the back.
Concentrate is the whole powder
This line describes the total yeast-derived material in the serving: beta-glucan plus everything else that came with the cell wall. On its own it tells you the weight of the fill, not the strength of it. This is the number most low-priced brands print and often the only number they print.
What good looks like
The source is named, yeast-derived, not just "beta-glucan complex", and a purity figure appears alongside it.
Red flag
A concentrate or extract weight quoted as though it were the active dose. A "250 mg extract" standardized to 70% is 175 mg of beta-glucan.
This is the line that matters
The pure-basis figure: how much actual 1,3/1,6 beta-glucan you receive. GlucanGuard declares 250 mg per capsule and 500 mg per daily serving on a pure beta-glucan basis, from a powder of 80%+ purity. Much of the published research on beta-glucan used a 500 mg daily dose, so this is the figure to compare against a study, not the concentrate weight.
What good looks like
Both concentrate and pure-basis amounts printed, with the polymer type spelled out as 1,3/1,6 and the word "minimum" attached.
Red flag
No pure-basis figure at all, or a vague "beta-glucans" line with no linkage and no purity stated.
Short lists are a quality signal
Everything here is a carrier, capsule or flow agent, it does no work for you. GlucanGuard uses two: a plant-based pullulan capsule and rice hull fiber as a natural flow agent.
What good looks like
A handful of recognizable, named excipients with no artificial colors or synthetic additives.
Red flag
Magnesium stearate, silicon dioxide and titanium dioxide stacked ahead of a short active list.
A proprietary blend hides the dose
A blend lists several ingredients under one combined weight, so you cannot tell how much of each you are getting. There is no blend in GlucanGuard: one active ingredient, one stated amount.
What good looks like
Every active ingredient carries its own milligram figure.
Red flag
A blend total with ingredients ordered by weight but never individually quantified.
The number that matters
A 250 mg label can mean 175 mg
Many beta-glucan supplements print the weight of a yeast extract or concentrate rather than the weight of the beta-glucan inside it. A 250 mg extract standardized to 70% delivers 175 mg of actual beta-glucan, a third less than the label figure suggests, at the same price.
GlucanGuard states 250 mg per capsule on a pure beta-glucan basis. A daily 2-capsule serving delivers 500 mg, the dose used in much of the published research.
Actual beta-glucan delivered by a capsule labelled “250 mg”
Figures are calculated from stated label basis and standardization percentages. Where a label gives a concentrate weight with no purity figure, the actual beta-glucan content cannot be determined from the label at all.
Why purity is different here
With beta-glucan, purity is not just arithmetic
For most nutrients, the final dose is what counts. A small amount of a pure active and a larger amount of a diluted one are equivalent. Beta-glucan does not work that way, for two mechanical reasons.
The fiber has to be free to bind
Beta-glucan works by engaging receptors on immune cells. In a low-purity powder, much of the beta-glucan is still intertwined with the other components of the yeast cell wall it came from, mannan oligosaccharides and chitin. Those bound fragments cannot reach the receptor, so they contribute weight to the label without contributing activity.
Low purity
Beta-glucan still locked into cell-wall debris. Receptors cannot access it.
80%+ purity
Separated beta-glucan, free to engage the receptor it was measured for.
The 1,6 linkage is fragile
Separating beta-glucan from the cell wall is also where the molecule can be damaged. The 1,6 side-chain linkage is the branch point that makes the molecule recognizable in the first place. This branch is particularly sensitive to acid, and many powder producers use an acidic step in manufacturing. A powder can test as beta-glucan and still have lost the structure that does the work.
The branch point at risk
The 1,3 backbone runs horizontally. The 1,6 branches project from it, and they are what receptors recognize. Break them and the assay still reads glucan.
What this means when you shop
Two figures on a beta-glucan label are worth finding before you buy: how much beta-glucan you are actually getting on a pure basis, and the purity of the powder it came from. A high-purity starting material is not a spec sheet detail, it is the difference between beta-glucan that can bind and beta-glucan that only weighs something. GlucanGuard is formulated from an 80%+ purity powder and declared on a pure basis.
Source matters
Not every beta-glucan does the same job
"Beta-glucan" names a family of molecules, not one ingredient. Structure follows source, and structure is what determines how the molecule is used.
Yeast
In GlucanGuardStructure
1,3/1,6 branched
The branched 1,6 side chains are what immune-cell receptors recognize. This is the form used in the majority of immune-support research.
Typically used for: immune wellness
Oat & barley
Structure
1,3/1,4 linear
A linear chain with no 1,6 branching. Behaves as a viscous soluble fibre, which is why it appears on cereal packaging rather than immune labels.
Typically used for: soluble fibre
Mushroom
Structure
1,3/1,6, variable
Also branched, but content swings widely with species, extraction method and whether the product is fruiting body or grain-grown mycelium.
Typically used for: varies by species
How to take it
Two capsules, empty stomach, every day
Beta-glucan is a particulate fiber rather than a dissolved nutrient. Taking it away from food reduces competition from other dietary fibers in the gut, and daily consistency matters more than any single dose.
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Morning
Take 2 capsules with water
Ideally 30 minutes before your first food of the day.
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Weeks 1–4
Optional loading routine
You may take 2 capsules twice daily for added benefit before reducing to once daily.
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Ongoing
One serving daily, year-round
Suitable for adults, children and animals. Store cool, dry and out of direct sunlight.
Side by side
GlucanGuard against a typical beta-glucan capsule
“Typical category product” describes patterns commonly seen on retail beta-glucan labels. It is not a comparison to any named brand, and no competitor claim is stated or implied.
How many capsules does it take to match one bottle?
One 60-capsule bottle of GlucanGuard contains 15,000 mg of beta-glucan. Here is how many capsules of a lower-purity product you would have to swallow to get the same amount, because a capsule holding 175 mg does not do the work of one holding 250 mg.
One bottle. 15,000 mg of beta-glucan, 30 days at the 500 mg daily dose.
20 more capsules — a third of a second bottle — to reach the same 15,000 mg.
26 more capsules, and a 60-count bottle runs out roughly nine days early.
A bottle that lasts the month
Two GlucanGuard capsules give you the 500 mg daily dose used in much of the published research, so a 60-capsule bottle is a full 30 days. A 70% product needs closer to three capsules for the same dose, and the bottle is empty in about three weeks.
And when purity is not printed at all
Some of the cheapest products state a powder weight with no purity figure anywhere on the label. There is no way to run this calculation on them, not for us, and not for you at the shelf. That is the reason to look for a purity figure before you look at the price.
Capsule counts are calculated from the standardization percentage each product states on its label or manufacturer page, rounded up to a whole capsule, and compared against 15,000 mg of beta-glucan, the content of one 60-capsule GlucanGuard bottle. Stated purity figures have not been independently assayed by CellVive Science. This is a comparison of label categories, not of any named brand.
The mechanism
Modulation, not stimulation
Yeast-derived beta-1,3/1,6-glucan is recognised by receptors on macrophages and other innate immune cells. Rather than pushing the immune system harder, it helps it respond more appropriately, which is why the brand describes it as modulation.
- Supports immune response and everyday resistance
- Supports seasonal wellness routines
- Supports recovery after physical or environmental stress
Questions
Frequently Asked Questions
What is beta-glucan and what does it do?
Beta-glucan is a naturally occurring polysaccharide found in yeast, oats, barley and mushrooms. Yeast-derived 1,3/1,6 beta-glucan is the form commonly selected for immune-support supplements because its branched structure is recognized by receptors on innate immune cells. GlucanGuard uses it to support normal immune system function as part of a daily routine.
How much beta-glucan is in each serving of GlucanGuard?
Each 2-capsule serving of GlucanGuard provides 640 mg of yeast-derived beta-glucan concentrate delivering a minimum of 500 mg of 1,3/1,6 beta-glucan. A 60-capsule bottle contains 30 servings; a 120-capsule bottle contains 60 servings.
Why does beta-glucan purity matter more than for other supplements?
For most nutrients the final dose is what counts, so a lower dose of a pure active and a higher dose of a diluted one are equivalent. Beta-glucan is different: in a low-purity powder much of the beta-glucan is still intertwined with mannan oligosaccharides and chitin from the yeast cell wall, and bound fragments cannot engage the immune-cell receptors that make the molecule work. Purity therefore changes how much of the stated dose is functional, not just how much material is in the capsule.
What does "pure beta-glucan basis" mean on a supplement label?
t means the stated milligram figure is the beta-glucan itself, not the weight of the extract it came from. GlucanGuard declares 250 mg of beta-glucan per capsule on a pure basis. A competing capsule listing "250 mg of yeast extract standardized to 70%" contains 175 mg of actual beta-glucan — the same label number for 30% less active ingredient.
How can I tell how much beta-glucan a supplement really contains?
Read the Supplement Facts panel and the label claim together. If the panel names an extract, concentrate or standardized material, multiply the milligram figure by the stated purity percentage to get the actual beta-glucan content. If no purity percentage is printed anywhere, the actual content cannot be determined from the label at all. Much of the published research used 500 mg of beta-glucan daily, which is the figure worth comparing against.
Does the manufacturing process affect beta-glucan effectiveness?
It can. Separating beta-glucan from the yeast cell wall is where the 1,3/1,6 linkages can be broken, and the 1,6 side-chain linkage, the branch point immune receptors recognize, is particularly sensitive to acid. Many powder producers use an acidic step in manufacturing. A powder can still test as beta-glucan after that damage, which is why the purity and quality of the starting material matter as much as the milligram figure.
Should I take beta-glucan on an empty stomach?
Yes. Take 2 capsules once daily on an empty stomach, ideally about 30 minutes before food. Beta-glucan is a particulate fiber rather than a dissolved nutrient, and other dietary fibers can compete with it in the gut. You may take 2 capsules twice daily for added benefit before reducing to once daily.
Is GlucanGuard vegan and free from common allergens?
Yes. GlucanGuard uses a plant-based pullulan capsule with non-GMO, 100% traceable ingredients, and is free from dairy, soy, preservatives, artificial colors and synthetic additives.
Is GlucanGuard suitable for children and pets?
GlucanGuard is suitable for adults, children and animals. Consult a qualified healthcare professional before beginning any dietary supplement, especially if pregnant, nursing, taking medication or under medical supervision.
Start today
Now you know what to look for
250 mg of beta-glucan per capsule on a pure basis, 500 mg per daily serving, from a powder of 80%+ purity, with a supply chain you can trace. Check any other label the same way.
$39.95 for the 1-month/60 capsules.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. CellVive Science products are manufactured in facilities that comply with applicable U.S. regulations and current Good Manufacturing Practices (cGMP). All ingredients are 100% traceable through documented sourcing and quality control standards. Consult a qualified healthcare professional before beginning any dietary supplement, especially if pregnant, nursing, taking medication, or under medical supervision.