6 reasons this prebiotic works when other fibres backfire
If fibre and probiotics have left you bloated, urgent, or worse, the problem isn't fibre. It's the type. Here's what makes this one different for a sensitive gut.
30 servings · one scoop a day · Low FODMAP certified
Get Gut Support →20% off applied automatically
30 servings · one scoop a day · Low FODMAP certified
Get Gut Support →20% off applied automatically
7g therapeutic dose of Sunfiber®
Low FODMAP Certified
Third-party tested
Next-day Auckland dispatch
01
It's certified low FODMAP
by the people who
invented FODMAP.
Most "gentle" gut products just say gentle. This one carries the Monash University Low FODMAP Certified™ mark. Monash are the researchers who created the FODMAP system the entire low-FODMAP diet is built on.
That's an independent lab testing the finished product, not a marketing word on a tub. If you're following low FODMAP, or your gut reacts to the high-FODMAP fibres in most gut supplements, this is the line between a fibre you can take every day and one that leaves you doubled over.
02
It regulates in both directions: loose or backed up.
This is the part most fibres get wrong. Bulking fibres only push one way. Sunfiber® is a soluble fibre studied in clinical trials for both loose stools and constipation, and in people with IBS.
It doesn't force your gut to one extreme. It moves it toward normal. On the days you're loose and urgent, it firms and slows. On the days you're backed up, it softens. One fibre, both problems.
03
It ferments slowly. That's
why it doesn't gas you out.
Here's why a prebiotic made you worse last time: most prebiotic fibres ferment fast. Fast fermentation produces gas fast. On a reactive gut, that's instant bloating and cramping, and it's why you quit within a week.
Sunfiber® is partially hydrolysed guar gum. It ferments slowly and steadily along the gut, feeding your good bacteria without the gas spike. Same prebiotic payoff. None of the blow-up that put you off fibre in the first place.
04
7 grams. The dose the
research actually used.
A lot of gut powders add a token sprinkle of fibre so they can print it on the label, then bulk the tub with cheap filler. The clinical work on this fibre used meaningful daily doses, not a dusting.
Every scoop of Gut Support delivers a full 7g therapeutic dose of Sunfiber®, with no filler padding it out. You're getting the amount that does the work, not the amount that makes the ingredient list look busy.
05
Elderberry polyphenols feed
the bacteria you want more of.
There's a second active most prebiotics don't have: 500mg of Black Elderberry extract. Its polyphenols have been linked in research to higher levels of Akkermansia, a keystone gut bacterium tied to a healthier gut lining and better metabolic health.
And because most of your immune system lives in your gut, feeding the right bacteria supports your everyday immune defences too. It's not just fibre. It's fibre plus the polyphenols that help the good bacteria thrive.
06
Probiotics didn't work because the bacteria don't stick. This feeds the ones that do.
Here's why the probiotics were a waste of money: most swallowed strains just pass through. A lot of the dose doesn't survive stomach acid, and the few that make it rarely settle in and stay. You get a week of feeling slightly better, then you're back buying the next bottle.
Sunfiber works the other way around. It's a prebiotic: instead of adding new bacteria, it feeds the beneficial ones already living in your gut, the strains adapted to you, so they multiply and hold. You're not renting bacteria that move out. You're growing your own.
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
Why Biosphere
Most supplements are built to a price. This one's built to work.
Which is why so many gut powders leave you feeling nothing, or worse. We do it the other way around.
Therapeutic doses, not sprinkles
A full 7g of Sunfiber® and 500mg of real Black Elderberry: the doses the research used, not a dusting to justify the label.
Nothing to react to
Low FODMAP certified, monk-fruit sweetened, no fillers and no sugar alcohols. Built specifically for guts that react to everything else.
Made properly
Manufactured in a GMP-certified USA facility and third-party tested, so what's on the label is what's in the tub.
What's in every scoop
Two actives. No proprietary blend hiding the doses.
Everything is disclosed, at the dose that matters. Here's exactly what you're taking.
A slow-fermenting soluble prebiotic fibre that regulates in both directions, studied in clinical trials for constipation, loose stools and IBS. It feeds Bifidobacteria without the gas of harsher fibres, slows post-meal blood sugar, and increases satiety to support healthy weight management. Certified low FODMAP by Monash University.
A concentrated source of polyphenols that support the gut lining and the immune tissue around it. Research links black elderberry to higher levels of Akkermansia, a beneficial keystone gut bacterium, supporting both gut health and your everyday immune defences.
The brand NZ stores already stock.
Biosphere is stocked in 150+ stores nationwide. Real reviews, from real customers. Read them for yourself below.
Customer Reviews
Overall rating: 4.8 / 5 from 1620 reviews.
Astaxanthin is vital for us all in this aging process. Every blessing we can get for all round health and optimal function is a bonus. We are grateful for the bioavailable source. Regards Steve and Fiona
I have tried many supplements over the years. Some I’ve stopped using because I didn’t notice a difference. I Will always aim to keep astaxanthin as part of my stack. I have noticed such an amazing change in my skin. My skin has always been good, but this has taken it to another level. I love this product! I particularly love the Biosphere brand as they use olive oil in the capsules, rather than seed oils. Really happy to support this NZ company.
Great product, I have been using it to help my eyes feel more comfortable ( post menopause) , they are definitely less scratchy than they were! I can’t wait to try the magnesium yet, it looks really good.
We both have the best sleep usimg this product. I am about to put in another order.
Lovely flavour and works really well.
I rely on 'Sleep' to help my sleep. Its a vial part of my evening ritual. I notice when I dont take it
Great for dry eyes. Best I've tried
Take this every night for restless legs and sleep . Alternate between the 2 flavours
Very good product but I did have to adapt it. I found taking it just before bed it would give me a hit of energy. So I no take it with dinner or just after around 7 and it gives my body time to process the ashwaganda. I still do have trouble sleeping but I do feel the nights I do sleep it’s a deeper sleep. I am going through a lot of stress and biological changes but I do feel it has helped just not as much as I hoped. The flavour is delicious and the customer service was awesome. I’m going to try the plain magnesium next time as I think ashwagandha not well suited to me
Great product - slept soundly :)
Love this product, after my first month I have far more mobility, energy and stamina, will be purchasing more...
I haven't gotten my very first bottle yet, but I will be ordering more. Capsules are easy to swallow, and makes it easy that need to take with food . Easy to remember with breakfast
On my second month of astaxanthin, not much change except a little more energy generally. Will give it a full three months.
I am so happy with my Astaxanthin . Can’t believe that it has worked so quick at pain relief . I have tried lots of other products in many years and I think this is the best thing I have tried . I have no pain and it so good . I hope this keeps up I have arthritis and and a few joint replacements so always in pain . Thank you
Awesome flavour magnesium for a massive day in the mountains!!!
Both flavours are nice and the powder mixes well. No longer getting night time cramps, so very happy with this. Will definitely be continuing with this product.
Awesome product.
I've been taking Biosphere Nitric Oxide for just over 5 weeks now. Before I started my blood pressure was in the 140s/150s/ 90s. This month I have only had one spike and my daily readings are consistently lower with some now in the ideal or normal range. I am really pleased with this result so far.
Ive been taking these now for a little over a month an just love the way my skin feels, an how its helped me not getting any flu this winter . As a shift worker doing 12 hr shifts I think its really been a great help getting me thru the day. I highly recommend them.
This magnesium is almost magic, I have had hip pain for several years and 5 weeks in it had totally gone. Unfortunately its a little hard on my stomach so have had to cut down the dose to half, I can just feel my hip pain a little again with the half dose. I will try supplementing the half dose with Astaxanthin next order.
I was getting regular muscle cramps at night and in the 30 days I trialled Biosphere Magnesium I only got a cramp once or twice. Since then I tried another brand of magnesium but haven't had the same success. Mixes easily and the lemon-lime flavour I tried us pleasant to drink.
I’ve been taking Bio sphere Nitric Oxide for a couple of years now as part of my supplement protocols. I workout at the gym and also do a lot of breathwork and this compliments everything I do.
It tastes good, easy to use, and I've halved my blood pressure tablet. It seems to be working for me and I intend to remove the blood pressure tablet totally in a week or so. It's coming on holiday with me!
Take it with my morning decaf that has coconut milk - so I am taking 2 capsules with some fats. Recently had people commenting on how nice my skin is looking. I am 60yo and recovering from cancer treatment.
Really happy with the magnesium powder, mixes well, tastes great and is now part of my daily routine.
Perfect start to my day…great flavour and definitely an improvement showing in my blood pressure levels!
The lemon/lime Magnesium powder is delicious and refreshing. It certainly is helping reduce cramps and helps me get to sleep quickly and sleep for longer periods.
I take magnesium after the gym to help with cramp.
Onto my first jar and already have a back up ready to go. Tastes delicious . Even bought a new bottle to use .
My husband is slowly reducing his blood pressure medication by using Nitric Oxide. Blood pressure is finally reducing
Been taking Astaxanthin for about 6 weeks now and definitely notice my eye and skin health is better, also seem to have a bit more energy.
A nightly routine, super power sleep when I take the magnesium - such a distinctly better sleep than nights I don’t take it.
I’ve recently changed to Biosphere Magnesium and will be reordering. It is so easy to take and adjust the amount as needed. I particularly like the Mango Pineapple flavour and take it just before bed to stop leg cramps.
Great product
I have this in the morning. Great tasting and refreshing. Great start to the day
I have found this the only product, after many years of finding something to help my sleep. My sleep for past 13 years been erratic due to menopause and hectic life. I have used this for a month now with only a couple of bad nights sleep. I sleep through until 5.00am. Hallelujah. Thank you Biosphere. Great product. Also just started using your hydrate supplement. I'll see how that goes over next month too.
I've been forgetting to wear my prescription glasses, it's been 3 months. My hair is a little darker, my nails are stronger and my skin has a summery glow. Hoping for some relief to my joints....
Easy to take and Good value for money!
The longer I take these the better I have been feeling
I started using astaxanthin on 13 May 2026. I live with chronic inflammation that often leads to headaches and migraines, and since beginning the supplement I’ve noticed a meaningful shift. My baseline inflammation feels lower, and the frequency and intensity of my headaches and migraines have reduced. Another unexpected change has been with my eye floaters. They used to be a daily nuisance, but over the past weeks they’ve improved noticeably. This is simply my personal experience and not a medical conclusion. Yet the changes have been significant enough for me to share.
Any last questions?
Is it actually certified low FODMAP, or just marketed that way?
Actually certified. It carries the Monash University Low FODMAP Certified™ mark. The finished product is independently tested and certified by Monash, the university that developed the FODMAP system. It's the only product in our range with that certification.
I've reacted badly to other prebiotic fibres. Why would this be different?
Because the reaction usually comes from fast-fermenting, high-FODMAP fibres that flood your gut with gas. Sunfiber® is partially hydrolysed guar gum. It ferments slowly and is certified low FODMAP, which is exactly the combination that avoids the bloating and cramping. It's built for the gut that other fibres upset.
Will it help if I'm loose one day and constipated the next?
That's exactly what it's for. Sunfiber® is bidirectional. It's been studied for both loose stools and constipation. It firms when you're loose and softens when you're backed up, regulating your gut toward normal rather than pushing it one way.
Does it fit a low FODMAP diet or elimination phase?
Yes. The Monash Low FODMAP certification means it's suitable to use during low-FODMAP eating. As always, if you're working through a structured elimination and reintroduction plan with a dietitian, run it past them so it fits your specific protocol.
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. Consistency is what makes it work.
What's it sweetened with?
Monk fruit extract: natural and low FODMAP. No sugar alcohols (no erythritol, sorbitol or xylitol), which are common triggers for the exact bloating you're trying to avoid. Natural elderberry flavour, and it mixes clear.
Give your gut a fibre it can actually handle.
A full 7g therapeutic dose of Sunfiber®, plus Black Elderberry. Low FODMAP certified, nothing to react to.
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