Go regularly again.
Without the bloat.
A gentle, low-FODMAP prebiotic that gets things moving, without the gas and bloating other fibres leave you with.
30 servings · one scoop a day
Get Gut Support →20% off applied automatically

30 servings · one scoop a day
Get Gut Support →20% off applied automatically
You go every two or three days. When you do, it's a strain.
By the afternoon you're bloated, and your waistband feels tighter than it did this morning.
So you did the sensible thing: you added more fibre. And somehow it made everything worse. More gas. More bloating. More discomfort.
You're not doing it wrong. You're taking
the wrong kind of fibre for a sensitive gut.
Why fibre backfires
More fibre isn't the problem. The type of fibre is.
Most fibres ferment fast once they hit your gut. That fast fermentation produces gas quickly. On a sensitive gut, that's the bloating and cramping that makes people quit within a week.
The fibres in a lot of supplements are the fast-fermenting kind. Coarse bran fibres are rough on the gut wall. Neither is built for someone who already reacts to what they eat.
The fix isn't less fibre. It's a slower, gentler fibre: one that feeds your gut without flooding it with gas.
That's exactly what Sunfiber® is.
The fibre inside
Sunfiber® gets things moving. Gently.
It's a soluble fibre (partially hydrolysed guar gum) that ferments slowly. It feeds your good bacteria without the gas. And it works in both directions.
If you're backed up
It softens and regulates, so going becomes easier and more predictable.
If you're loose
It firms and slows things down, so your gut stops running the show.
Sunfiber® has been studied in clinical trials for constipation, for loose stools, and in people with IBS. It moves your gut toward normal, not toward one extreme. And it's certified low-FODMAP by Monash University, the people who created the FODMAP system.
The honest part: this is a daily fibre, not a laxative. It works gradually, not overnight. Most people feel the difference within two to four weeks of taking it every day.

Gut Support
30 servings · one scoop daily · Elderberry flavour
- 7g therapeutic dose of Sunfiber® per scoop
- 500mg Black Elderberry for gut-immune support
- Low FODMAP certified for sensitive digestion
- No fillers, no additives, no sugar alcohols
- Third-party tested, made in a GMP-certified facility
What's inside
Two ingredients. Both doing real work.
No filler list. No proprietary blend hiding the doses. Just two actives, at doses that match the research.
Organic Sunfiber®
Partially Hydrolysed Guar Gum
Sunfiber® certified logoRegularity, both ways. A slow-fermenting soluble fibre studied in clinical trials for both constipation and loose stools. It regulates toward normal, not one extreme.
Feeds the good bacteria. A true prebiotic: it selectively feeds Bifidobacteria and butyrate-producing bacteria, without the gas of harsher fibres.
Steadier blood sugar. As a soluble fibre it slows sugar absorption after eating, shown to blunt post-meal blood glucose, supporting healthy blood sugar.
Helps you feel full. It increases satiety after meals, supporting appetite control and healthy weight management.
Black Elderberry Extract
Sambucus nigra
Polyphenols for the gut-immune axis. A concentrated source of polyphenols that support the gut lining and the immune tissue around it. Most of your immune system lives in your gut.
Feeds a keystone bacterium. Research links black elderberry to higher levels of Akkermansia, a beneficial gut bacterium associated with metabolic and gut health.
Everyday immune support. Paired with a fibre studied for reducing cold-like symptoms when taken continuously. It's support you take daily, not a scramble once you're already run down.
Stocked in 150+ stores nationwide.
Real reviews, from real Biosphere customers. Read them for yourself.
Most supplements are formulated to a price point. Not to a result.
That's why so many fibre products underdose the one thing that matters, pad the tub with cheap filler, and leave you feeling nothing, or worse, bloated.
We do it the other way around. A full 7g therapeutic dose of Sunfiber®. Real Black Elderberry extract. No fillers. Third-party tested, in a GMP-certified USA facility.
It costs more to make. We're not going to pretend otherwise, and we're not going to cut the dose to hit a cheaper price.
You're paying for the dose that actually does the work.
60 days to feel the difference, or your money back.
Give it a proper run. Take it daily for up to 60 days. If your gut isn't in a better place, email us and we'll refund you. Love it or your money back. The risk is entirely ours, not yours.

Before you try it
Questions people ask
How long until I notice a difference?
It's a daily fibre, not a laxative, so it builds up rather than hitting overnight. Most people feel the difference within two to four weeks of taking it every day. The customers who stick with it daily are the ones who rave about it. Give it a proper run.
Will it bloat me like other fibres did?
That's the whole point of this one. Sunfiber® ferments slowly, which is what avoids the rapid gas that causes bloating with faster fibres. It's also certified low-FODMAP by Monash University, so it's specifically suited to sensitive, reactive guts.
When should I take it?
Any time of day that's easy to remember. One scoop mixed into 200ml of water, once daily. Consistency matters far more than timing. Pick a moment you'll actually stick to.
Can I take it every day, long term?
Yes. It's designed for daily use to keep your fibre intake topped up and your gut regular over time. It's food-based fibre, not a stimulant, so there's nothing to build a tolerance to.
Is it really low FODMAP?
Yes. It carries the Monash University Low FODMAP Certified™ mark. Monash are the researchers who developed the FODMAP system in the first place. It's the only product in our range with that certification.
What's it sweetened with?
Monk fruit extract: natural, no calories, and low-FODMAP. No sugar alcohols (no erythritol, sorbitol or the like), which are a common trigger for the exact bloating you're trying to avoid. Natural Black Elderberry flavour, and it mixes clear.


Get regular. Without the bloat.
A full 7g therapeutic dose of Sunfiber®, plus Black Elderberry. The gentle way to a gut that finally behaves.
60-day money-back guarantee · Next-day NZ dispatch