Is E631 Halal?
E631 is doubtful (mushbooh) — its halal status depends on the source. Typically from fish or meat.
Why this status?
Typically from fish or meat. Animal source needs halal certification.
Editorial summary
This summary is editorial and is general information, not a religious ruling. The status above is unchanged.
What it is
E631 is disodium inosinate, a flavour enhancer that boosts savoury, meaty taste. It is the sodium salt of inosinic acid, which occurs naturally in meat and fish. It is rarely used on its own: it is usually combined with E627, disodium guanylate, and often with monosodium glutamate, E621, in crisps, instant noodles, stock cubes, soups, seasoning mixes and snacks. The blend of E627 and E631 is sold as E635, disodium ribonucleotides.
Why the status is doubtful
Commercial disodium inosinate can be made by fermenting sugars with microbes, or prepared from animal products such as meat or fish. Our rating notes that it is typically from fish or meat and that an animal source needs halal certification. Fish is halal for most scholars, but meat-derived inosinate would need to come from a halal-slaughtered animal, and pork-derived material would not be permissible. Because the label does not say which source was used, this entry is rated doubtful (mushbooh).
What regulators are doing
The European Food Safety Authority is re-evaluating the ribonucleotide flavour enhancers, E626 to E635, under the EU's programme for re-assessing food additives, and issued a call for data in 2023. That review concerns safety and does not address the source of the ingredient.
Reading a label
On a label it may appear as E631, disodium inosinate, disodium 5'-inosinate or IMP, and it is often next to E627 or E635. Its presence in a vegetarian product does not prove a plant or fermentation source, so look for a vegetarian or vegan certification rather than just a vegetarian-sounding name. In savoury snacks and noodles, the flavourings, meat extracts and fats in the same product often raise bigger questions, and a halal certificate on the product covers them all.
Related entries
E627, disodium guanylate, is usually made from yeast or plants but can be from fish, and is also rated doubtful on this site. E635 combines the two. E621, monosodium glutamate, is made by fermentation and is rated halal.
In short
In short, E631 can be made by fermentation or from meat or fish, the label does not say which, and a halal certificate or the manufacturer's written answer is what settles it.
Also listed on labels as
E631 can appear on an ingredient list as disodium inosinate, IMP.
What to ask the manufacturer
Ask the manufacturer in writing where the ingredient comes from: whether it is plant, microbial or animal in origin, and if it is animal, which animal and how it was slaughtered. Ask whether any alcohol was used as a solvent or carrier, and whether the product carries a halal certificate from a body your local authority recognizes. Keep the answer, because suppliers and recipes change.
Products and questions that involve E631
Sources
Classification based on clinical nutrition assessment; no independent published study cited.
Reviewed by Habib Aman, Islamic Scholar, MBA — last reviewed September 27, 2026.
This is general guidance for everyday shopping, not a religious ruling. Formulations vary by manufacturer and country — confirm with the manufacturer or your local scholar when it matters.
Checking a whole product?
SafaScan is a halal scanner app that is coming soon. It will check E631 and every other ingredient on a product. Sign up for launch updates. Learn about SafaScan.
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