• Dairy Free
  • Gluten Free
  • Stevia Free
  • GMP
  • Halal
  • Kosher
  • Non GMO
  • Vegan
Low-FODMAP, water-soluble prebiotic fibre to support microbial diversity

A colourless, flavourless prebiotic fibre derived from the seeds of the guar plant. This powder dissolves in hot water, can be added to food and has shown to be well tolerated in individuals with bowel symptoms, including IBS and SIBO.

Clinically, PHGG can be used as:
– A bulking agent and prebiotic to help balance faecal movements – both constipation and diarrhoea
– A prebiotic food source to increase Bifidobacterium and other SCFA producing bacteria
– A dietary fibre to increase satiety

£25.50 (inc VAT)

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Key Benefits

A soluble source of prebiotic fibre for both constipation and diarrhoea
Derived from guar beans, PHGG is a convenient source of vegan dietary fibre that helps support the balance of faecal movements (i.e constipation and diarrhoea)

Rebalances the gut and increases microbial diversity
Selectively feeds gut microbiota (Bifidobacterium and other SCFA producing bacteria) to rebalance the gut microbiome and increase diversity.

Suitable for those with existing bowel symptoms
PHGG dissolves in water with no flavour and is well tolerated in individuals with existing bowel symptoms such as IBS or SIBO.

A heat-stable prebiotic

PHGG is a heat-stable prebiotic that can be baked into foods, added into stovetop meals and smoothies or added to your morning cup of coffee or tea.


9 reviews for Bio.Me Prebio PHGG 225g

  1. Hannah R verified buyer

    This product has surpassed my expectations.
    I have endometriosis and to manage it I take medication which has the fun side effect of causing bloating and constipation. I also get swelling and pain from the endo itself, so my pelvis and stomach were very sore and uncomfortable for long periods of time. It was awful.
    This product really helped reduce constipation which in turn helped the bloating. It’s been such a godsend to have some relief. I was really having a hard time with it and now I feel so much better. My stomach has gone back to it’s normal size (no more looking pregnant, yay!) and all that bloating has stopped irritating the endo which means less pain too. I’m so happy.

  2. Sally Jarman verified buyer

    I have been using this product for about 6 months and will continue to use it every day. This product has enabled me to have a normal bowel movement, nearly every day, without any unpleasant side effects.

  3. Teresa Pierlot verified buyer

    I’ve been using Prebio PHGG for about 4.5 months. I started taking it as an adjunct to the Invivo probiotics, to help establish a healthy biome, but I found it had an unexpected and very happy secondary effect. Namely, it has resolved a chronic problem with constipation (“chronic” for 30 years!). I noticed improvement within 2-3 weeks, which has continued steadily. I was able to reduce the prescription laxative several times: I have been off them completely for about two weeks now. This is more than just a good result! I live in a wheelchair, due to a spinal cord injury over 30 years ago. The lack of normal movement, coupled with medications that cause constipation, resulted in a constant battle to keep things moving (pun intended…). It is a common problem with spinal cord injuries, and often aggravates other health issues. I had tried everything suggested by my doctor and by various naturopaths, without any lasting success. I was very glad to find that Prebio PHGG is NOT like the typical fiber-based products recommended for constipation (they only made things worse); it dissolves completely and is easy to drink. It’s a simple thing to try and I highly recommend the product.

  4. Charlotte Headley verified healthcare provider

    I use this product myself & regularly with my clients. I find it’s very well tolerated & effective!

  5. Sally Raynor verified buyer

    Great product. This has really helped my gut issues, less (or no) bloating and regular motions. Happy gut, happy me.

  6. Selina Moore verified buyer

    This has made a huge difference to my gut health. It helps me manage my diverticulitis – and has meant I can get back to a much more varied and healthier diet. Highly recommended for anyone wanting to maintain good gut health.

  7. Ruth Reynolds verified healthcare provider

    This is one of my favourite Invivo products. It’s my go to for clients with bloating and has become an essential part of my protocol.

  8. Gillian Webb verified buyer

    I have been using Bio.Me Prebio PHGG 225g, according to recommended dosage, for at least 6 weeks now. Previously I used Symprove for more than 5 years, having been diagnosed with chronic IBS around 4 years earlier and worked my way through different diets (including FODMAP which I found too challenging to stick to) and prescribed medication.

    Symprove controlled my symptoms such that on a good day, I only went to the toilet 3 times, which compared well to up to 9 times prior to discovering the product, but on a bad day, I could still go at least 6 times.

    Following a recommendation, I took the big decision to move to Bio.Me. I could not believe the difference it made in the first 2 days. I had not had what I would call a normal poo for many years, but that is what I had. The next 2 weeks were not quite as successful, but I think that was partly due to me testing the benefits of the product to the limit. For example, I love fruit and veg and decided to have large quantities once a day. This, as was previously the case, sent my intestine into over drive and I ended up with a very poorly tummy again.

    I am slowly learning not to indulge in such ways and am continuing to see the benefits of the product, evidenced by having more normal than abnormal bowel movement and less bloating.

    As a result, I have ordered more of this product and shall continue to keep it under review.

    The only reason for not giving it 5 stars is that I am not consistently symptom free, but I can honestly say that the results have been remarkable, nonetheless.

    Thanks to Jon, my gym trainer for sharing the information and intelligence about this product with me.

    • Invivo Support

      Thank you so much for taking the time to share your experience with us, Gillian. We are so thrilled to know PHGG has helped ease your symptoms and hope it continues to do so.

  9. Helen Ross verified healthcare provider verified buyer

    Wonderful product for any gut health issues!

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Nutritional Information
Ingredients: Sunfiber® R-O(Partially Hydrolysed Guar Gum) 5g

Mix 5g (1 tsp) daily into at least 200ml of water or other beverage of choice, or add to food.
Do not exceed the recommended dose, unless advised by your healthcare professional.

Suitable from 6 months

PHGG is normally well tolerated, but if you have a sensitive stomach, start with half a dose and build up gradually to the full dosage.

PHGG has been consumed by pregnant and lactating women for years, and it has been shown to be a safe way to improve regularity and reduce cramping and bloating. As with any supplement, however, please consult with your health care practitioner prior to use if you are pregnant or breastfeeding.


How should Bio.Me PHGG be taken?

Bio.Me Prebio PHGG is best mixed into a hot beverage to help it to dissolve. For the best results, add the PHGG first, then the liquid. It is heat stable so can be used in food and hot drinks where it dissolves easily.

Does Bio.Me PHGG have any contraindications to consider?

Bio.Me Prebio PHGG is a fibre product, all new fibres in someone’s diet should be consumed 2 hours away from existing medications.

If you have a condition which affects your ability to swallow you should ensure this is consumed with sufficient water, as per the directions on label.

Is Bio.Me PHGG safe to take during pregnancy and breastfeeding?

Bio.Me Prebio PHGG has been consumed by pregnant and lactating women for years, and it has been shown to be a safe way to improve regularity and reduce cramping and bloating.

As with any supplement, please consult with your healthcare provider prior to use if you are pregnant or breastfeeding.

What age is Bio.Me PHGG recommended for?

Bio.Me Prebio PHGG is suitable from 6 months.

Is Bio.Me PHGG suitable for vegans?

Bio.Me Prebio PHGG is suitable for vegans.

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