Food safety is something we take very seriously, and we are proud of the robust QA/QC behind every bottle of PuriFibre.

Each PuriFibre product undergoes real-time shelf-life validation by an independent, third-party NATA-accredited laboratory. Rather than relying only on testing when a product is first made, samples are tested as they naturally age under their recommended storage conditions. This gives us evidence that the product remains microbiologically safe and maintains the quality we expect throughout its stated shelf life.

Every production run is also overseen by an accredited Food Safety Supervisor (Credential ID: 1423134912204365824), alongside our HACCP-based food safety and QA/QC procedures.

Food safety is also a core area of research expertise within our founding team. You can read more about Dr Alexis Chung’s research here.

You can see more about how PuriFibre is made, tested and quality-controlled, including our independent laboratory results, on our Behind PuriFibre page.

We source locally wherever practical, with around 80–90% of our ingredients sourced from Australia, depending on the formulation and availability.

For example, the ginger used in PuriFibre is grown in Queensland, and we are currently developing a strawberry-based product using Australian strawberries.

Where possible, our founders also visit farms and production sites ourselves to better understand how ingredients are grown, processed and handled, and to make sure they meet the standards we expect.

Our formulations combine these food-based ingredients with PHGG in liquid form to create the finished PuriFibre products.

You can see some of our sourcing and site visits on our Behind PuriFibre page.

PuriFibre is a functional food designed to support and rebalance your gut microbiome by helping beneficial microbes grow and function more effectively. After completing a 60 Day Repair course as directed, your gut should be more able to utilise fibre from your everyday diet, which helps naturally produce beneficial compounds such as short-chain fatty acids (SCFAs). You may see significant positive benefits soon after starting PuriFibre, but remember that consistency is a key part of what makes the prebiotic fibre in PuriFibre work well! If your diet remains low in dietary fibre after finishing your pack, you may gradually notice a reduction in effects over time as your gut returns to its baseline state. If that happens, you can simply repeat a 20 Day Reset to help restart the process, which is why we have designed the order options so you can subscribe for a new pack at whatever time interval you desire.

Fibre can influence how quickly things move through your digestive system, which means it may affect how some medications are absorbed if taken at the same time. This is similar to how many foods can influence medication effectiveness. The fibre used in this product, partially hydrolysed guar gum (PHGG), does not bind to medications directly, but may indirectly affect how they dissolve or are released during digestion. For most people and most common medications, this is not an issue. However, to be safe, we recommend taking this product at least 1 – 2 hours apart from your medication. If you are taking prescription or time-sensitive medications, it’s best to check with your pharmacist or healthcare professional.

Not in the way many people worry about. Some fibre supplements, such as psyllium husk–based products, can reduce the absorption of certain vitamins and minerals because they form a thick gel in the gut that slows or blocks absorption. The fibre used PuriFibre - partially hydrolysed guar gum (PHGG), behaves differently. It has low viscosity and does not bind supplements directly.

Research shows that PHGG is generally absorption-friendly and, in some cases, may even improve the absorption of minerals such as iron, calcium, and magnesium by supporting a healthier gut environment. For most water-soluble vitamins and supplements, it has little to no negative impact.

We recommend not exceeding 2 shots per day. Most people experience optimal gut support at this intake when PuriFibre is consumed with sufficient water intake throughout the day.

If 2 shots per day are well tolerated but you feel your gut health has not improved, we recommend increasing your water intake. Adequate hydration is essential for the product to work effectively in the gut.

Remember that PuriFibre is a functional food, not a medicine. Research indicates that the key ingredient used in PuriFibre is safe at higher intake levels, beyond equivalent to 5 shots a day; however, we recommend gradual intake increases and pairing with increased water consumption to minimise the risk of digestive discomfort.

If symptoms persist, individual tolerance may vary, and seeking professional dietary advice is recommended.

Our cardboard packaging and protective materials are fully recyclable or compostable.

Our bottles are made from high-quality borosilicate glass, the same durable glass commonly used in laboratory equipment. We chose this material because the bottles are designed to be reused many times, and from a sustainability perspective, reuse should be prioritised over single-use recycling.

If you are in Perth, you can return your empty PuriFibre pack (bottles, lids, and carton) to us at our pop-up stalls and we will reuse them. Returned bottles are thoroughly cleaned and re-sterilised using hospital-grade, HACCP-compliant procedures to ensure safety. Lids are cleaned and pressed into aluminium sheets for recycling. We also encourage customers to reuse the bottles at home or donate them to schools, charities, or universities, where they can be used for science demonstrations, arts and crafts, seed germination, or other educational activities.

Because borosilicate glass melts at a different temperature from standard container glass, it cannot be processed through Australia’s normal household glass recycling system. Recycling guidance indicates that borosilicate glassware should generally be disposed of in general waste rather than the recycling bin. If reuse is not possible, the bottles can be safely disposed of in landfill.

Our aluminium caps are also very small, which makes them difficult for most recycling facilities to capture effectively, so they typically end up in general waste as well. For safety reasons, the caps are not reused.

In the future, we hope to introduce a return-by-post program so customers can send packaging back to us free of charge, allowing the bottles to be reused many times, exactly as they were designed to be used.

If you notice constipation, it’s usually a sign that your body needs more water. Fibre works best when it’s well hydrated, and simply drinking more water will often fix the issue. If you’re still uncomfortable after increasing your fluid intake, try taking a smaller amount and slowly building up over time. Everyone’s fibre tolerance is different, so going at your own pace helps your body adjust comfortably.

Our founders handcraft, fill, and pack every bottle themselves, which means we intentionally scale slowly to ensure quality is never compromised. This can sometimes lead to limited availability, but it allows us to maintain the standard we care deeply about. Thanks to your support, we’re introducing new equipment to help automate parts of the process and will be increasing production soon, while keeping the same level of care in every bottle.

Our shelf life is based on real-time testing conducted with an accredited NATA laboratory. Rather than relying on estimates or extended assumptions, we only state a shelf life that has been fully validated for safety and quality.

Protecting the safety of our product and the health of our customers is our highest priority, which is why we have taken a careful, evidence-led approach to shelf stability by testing for things like mould, E. coli and Total Colony Forming units before listing the Use By date.

You can store PuriFibre in the pantry, fridge or wherever is convenient for you, and best helps to maintain consistent consumption. We have found PuriFibre tastes the best serve chilled in the morning as a refreshing way to start the day. Please keep out of direct sunlight and below approx. 30°C.

You can manage your subscription anytime through your customer account. Simply log in and navigate to the Subscription Management page. From there, you can pause, skip, reschedule, or cancel upcoming deliveries, as well as update your shipping address or payment details.

Alternatively, you can access your subscription dashboard here.

If you have any trouble accessing your account or managing your subscription, feel free to contact us, and we’ll be happy to help. Our goal in introducing the subscription service is to make maintaining your routine easier and stress-free.

Each bottle is securely sealed to protect its quality and help it last for its stated shelf life. If the cap is difficult to open, hold just the cap under warm running water for a few seconds. Dry the cap and your hands, then place a dry towel over the cap for extra grip before twisting it open.

Powdered PHGG and PuriFibre can provide the same type of prebiotic fibre, but PuriFibre was designed as a more complete, ready-to-use gut health routine rather than simply a fibre powder.

Each formulation combines PHGG with other low-FODMAP, food-based ingredients, such as ginger and tea, selected by our nutrition and food technology scientists.

Keeping the formulation liquid was also a deliberate formulation decision. Drying can expose ingredients to heat and oxygen, and some of the compounds we wanted to retain, including antioxidants naturally present in ingredients such as ginger and tea, can degrade under those conditions. Working in liquid allows us to combine PHGG with these ingredients in the form we intended, rather than designing the formulation around what best survives being dried into a powder.

PuriFibre is also designed around consistent, evidence-based intake. Two shots provide approximately 7 g of fibre per day, making it easier to reach a meaningful daily dose and maintain it over a sustained period. Our programs are structured around this idea of taking an appropriate amount consistently, rather than occasionally adding a spoonful of fibre when you remember.

The liquid formulation also removes the preparation step and helps reduce the distinctive “cheesy” aroma sometimes associated with powdered PHGG. There is no measuring, mixing or waiting for powder to dissolve, just grab a shot and go.

Finally, we deliberately minimise plastic contact where practical. PuriFibre is packaged in high-quality borosilicate glass bottles, creating a convenient portable format while supporting our preference for durable, reusable packaging.

PuriFibre is built around PHGG (partially hydrolysed guar gum), a prebiotic fibre supported by published research across gut health, digestive comfort and the gut microbiome. You can explore how it works and why we chose it on our Science of PuriFibre page.

We also regularly review the latest scientific evidence in our Fibre Lab, where our PhD food scientist and nutritionist translate research into easy-to-digest articles on topics such as constipation, bloating, the gut microbiome, inflammation, fatigue and the gut-brain connection.

Our aim is not to overpromise what fibre can do, but to help you understand what the evidence actually says and where the science is still developing.