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Doubtful — depends on source
E627 (Disodium guanylate) is a flavour enhancer that can be derived from yeast, fish or meat — so it is treated as doubtful (mushbooh) unless the source is known.
Disodium guanylate is a flavour enhancer, usually used together with MSG (E621) and disodium inosinate (E631) to boost savoury taste. It can be produced from yeast, or derived from fish or meat.
Obtained from yeast extract, by fermentation, or by processing fish/meat tissue. The source is almost never stated on the label.
E627 is doubtful because its source varies. If it is yeast-derived or microbial it is permissible; if from non-halal meat it is not; fish-derived versions also matter to anyone avoiding fish. Because the source is rarely stated — and it very commonly appears alongside E621 and E631 in snacks and instant foods — the honest default is to verify.
It may be found in — this does not mean every product below contains it.
Disodium guanylateE627Flavour enhancer (E627)INS number: 627
In Singapore, verify the finished product on the MUIS HalalSG register or contact the manufacturer, since the source of E627 is usually not printed.
Check MUIS HalalSGSources: FAO/WHO, EFSA, MUIS · Last reviewed: July 2026 · This guidance is not certification.
It is doubtful (mushbooh). It can be from yeast, fish or meat, and the source is usually unstated — verify with certification or the manufacturer.
It can be derived from meat (possibly including pork sources), but it may also be from yeast or fish. Confirm via certification or the manufacturer.
'Disodium guanylate', 'E627' — often listed with E621 and E631.
Humble Halal methodology: we classify additives by their common origin, not by any specific product. A generally-halal ingredient does not make a finished product halal-certified. This page is general guidance, not certification or religious/legal advice — always verify the complete product. Last reviewed July 2026.