Fibre

Partially hydrolysed guar gum

Also called: PHGG, guar gum

A gentle soluble fibre from guar beans.

Why people take it: IBS, constipation, diarrhoea.
What the evidence says: Some evidence in IBS.
How it is usually taken: Usually 5 to 6 g a day.
Be careful: Gas at first.
Medicines it can interact with: Take other medicines 2 hours apart.

Other fibre

Psyllium Inulin Glucomannan Methylcellulose Wheat dextrin Beta-glucan Apple cider vinegar

Common questions

What is Partially hydrolysed guar gum?

A gentle soluble fibre from guar beans.

Why do people take Partially hydrolysed guar gum?

IBS, constipation, diarrhoea.

Does Partially hydrolysed guar gum work?

Some evidence in IBS.

How much Partially hydrolysed guar gum do people take?

Usually 5 to 6 g a day.

Is Partially hydrolysed guar gum safe?

Gas at first.

Does Partially hydrolysed guar gum interact with medicines?

Take other medicines 2 hours apart.

Sources and further reading

Last reviewed 31 October 2026. Written by Satya Babu.

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For information only, not medical advice. Supplements are not medicines: they are not tested and approved like drugs before they are sold, and they can interact with medicines. Talk to your doctor or pharmacist before you start one, especially if you are pregnant or breastfeeding, take regular medicines, or have kidney, liver or heart disease.