What E412 actually is
Guar gum thickens without heat, which is its main advantage over starch, and it does so at very low concentrations. It is what keeps ice cream smooth, stops sauces separating, and gives gluten-free dough enough body to hold together. It thickens roughly eight times more effectively than cornstarch.
What it is made from
Ground endosperm of the guar bean, grown mainly in India and Pakistan. It is a plant seed with no chemical modification.
Vegan, vegetarian, and halal status
Guar gum is plant-derived and suits vegan, vegetarian, and halal diets. It contains no gluten, since guar is a legume rather than a cereal. That legume status is the one thing worth knowing: people with a diagnosed legume allergy occasionally react, which is uncommon but documented.
Is E412 safe?
Guar gum is permitted with no numerical intake limit in the EU, UK, and US, and it is permitted in infant formula. EFSA re-evaluated it in 2017 and raised no safety concern at food levels. The one genuine warning attached to it is not about food: guar gum weight-loss tablets sold in the 1990s caused oesophageal and intestinal obstruction by swelling before they could be swallowed properly, and several were withdrawn. That was a concentrated tablet form, not the small amounts used to thicken food.
- A soluble fibre, so large amounts cause gas, bloating, and a laxative effect
- Concentrated guar gum weight-loss tablets caused obstructions and were withdrawn in the 1990s; this does not apply to food levels
- Guar is a legume, so a small number of people with legume allergy react
- Contains no gluten; permitted in infant formula
Where regulators stand
- EFSA (EU)
- Re-evaluated in 2017 with no safety concern at food levels. No numerical limit. Permitted in infant formula.
- FDA (US)
- Generally recognized as safe.
Foods it turns up in
- Ice cream and frozen desserts
- Gluten-free bakery
- Sauces, soups, and dressings
- Dairy and plant milks
- Infant formula
Names it hides behind
- E412
- Guar gum
- Guaran
- Thickener (E412)
Common questions
- What is the difference between guar gum and xanthan gum?
- Guar is ground guar bean and thickens cold liquids strongly. Xanthan is made by bacterial fermentation, holds up better in acid and heat, and gives more stretch. Gluten-free baking often uses both, because guar provides bulk and xanthan provides structure.
- Is guar gum gluten free?
- Yes. Guar is a legume, not a cereal grain, so there is no gluten at any stage.
- Is guar gum a legume?
- Yes, which is why a small number of people with legume allergy react to it. It is uncommon but documented.
- Is guar gum bad for you?
- At food levels it is a soluble fibre with no safety concern and is permitted in infant formula. The obstruction cases came from concentrated weight-loss tablets in the 1990s, not from thickened food.
- Is guar gum vegan and halal?
- Yes. It is ground plant seed with no processing that introduces animal material.
Checking a real pack
This page answers the code. The pack in your hand is what decides, because the same code can come from different sources depending on the manufacturer. LabelWise, formerly SafeChoice, scans the label and explains what is in front of you.
LabelWise content is educational and describes how additives are made, regulated, and labelled. It is not medical, dietary, or religious advice. For certification questions, the mark on the pack and the certifying body are the authority.