FiberMend is a plant based prebiotic fibre supplement that supports regularity and gut health, helping you feel steadier, more comfortable, and balanced day to day. Its star ingredients, partially hydrolysed guar gum Sunfiber, ResistAid arabinogalactan, and apple pectin, join forces to nourish friendly gut bacteria and support blood sugar balance. Thorne Research is renowned for ingredient transparency and GMP manufacturing, ensuring allergen-free, high quality you can trust.

Available Sizes & Variants:

11.6oz FiberMend powder - Convenient daily use with no added flavour.

Benefits & Features:

• Supports regularity and normal stool consistency.
• Partially hydrolysed guar gum fuels gut friendly bacteria, helping balance.
• Together, the blend combines Sunfiber, ResistAid, and apple pectin to provide a well rounded prebiotic effect that supports gut microbiome diversity and may help with blood sugar stability over time.
• Clinical grade standards ensure purity, with GMP facilities backing safety.
• Allergen friendly formula supports diverse dietary needs without synthetic additives.

Thorne's FiberMend stands out for its transparent sourcing and professional-grade quality. The Sunfiber from Taiyo, ResistAid from Lonza, and Greenselect from Indena S.p.A. are all traceable, and each batch undergoes rigorous testing to ensure purity and potency. The product is unflavoured and allergen-free, making it suitable for a wide range of diets. Thorne’s GMP-certified manufacturing facilities underpin safety and consistency, so you can trust this fibre blend to support daily wellbeing. It's a practical option among fibre supplements for constipation routines, and it pairs nicely with probiotics for a balanced gut.

Green Tea Extract, Guar Gum, Larch Extract, Pectin, Rice Bran

• GTIN: 693749002826
• Manufacturer: Thorne
• Categories: Fibre Supplements SupplementsNew ArrivalsPopular Supplement BrandsThorne Supplements
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Mix 2 scoops with at least 8-10 ounces of water, juice, or your preferred beverage daily, or follow your health professional's advice. As a dietary supplement\, take two capsules per day with meals\, or as directed by your health care practitioner.

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: Partly Hydrolysed Guar Gum (Sunfiber)

Partly hydrolysed guar gum is a plant-derived soluble fibre that sits in a prebiotic family, adding to the fibre content of a supplement blend.

This form is branded as Sunfiber and is sourced from guar gum, meant to be highly tolerable and suitable for a range of diets.

What Does Partly Hydrolysed Guar Gum Do?

The fibre supports normal digestion by helping to promote regularity and by feeding beneficial gut bacteria, which lines up with its described role in keeping balanced gut microbiota.

It can also play a part in supporting normal blood sugar management through its prebiotic fibre activity, as described for such ingredients in helper dietary fibre contexts.

This supplement is not intended to diagnose, treat, cure, or prevent any disease.

Thorne Research is Welzo's chosen partner for FiberMend because this brand embodies professional-grade quality, transparency, and rigorous manufacturing standards that align with our commitment to safe, science-led supplements. Thorne’s facility is GMP certified and its approach to ingredient transparency—highlighting traceable supply chains for Sunfiber, ResistAid, and Greenselect—underpins our trust in product integrity. This brand’s emphasis on high-quality, clinically studied fibres and allergen-free formulations further reinforces why we selected Thorne ahead of competitors, emphasising reliability, consistency and safety in every batch. Welzo’s experts evaluate Thorne through our standard quality lens, ensuring alignment with our quality certification process our quality certification process and ongoing regulatory compliance, while celebrating Thorne’s commitment to purity and potency.

FiberMend is particularly well suited for this brand due to its plant-based, prebiotic formulation and use of branded ingredients that support gut health without artificial additives. This brand’s robust manufacturing philosophy and traceable sourcing give us confidence in delivering a consistent, trustworthy product. For the Welzo team, the collaboration with Thorne was validated by Welzo's healthcare professionals and our rigorous internal evaluation process.