Flavour enhancer

Is E627 (disodium guanylate) halal?

Q: Is E627 (disodium guanylate) halal?

It depends. E627 is uncertain. Disodium guanylate can be made from sardines, from yeast extract or by fermentation, and the label does not say which. MUIS lists it as syubhah; SANHA lists the synthetic form as halaal. With no agreement, it stays uncertain.

Uncertain The source can vary. This one needs checking before you trust it.

It depends. E627 is uncertain. Disodium guanylate can be made from sardines, from yeast extract or by fermentation, and the label does not say which. MUIS lists it as syubhah; SANHA lists the synthetic form as halaal. With no agreement, it stays uncertain.

Also known as / other names

disodium guanylatesodium guanylateGMPE 627flavour enhancer 627

Last reviewed 2026-11-03.

What E627 actually is

E627 is a flavour enhancer that boosts savoury taste. It is rarely used alone: it sits next to MSG (E621) and usually E631, and the three together taste far stronger than any one of them.

It comes from guanylic acid. Makers get it from dried fish such as sardines, from yeast extract, or by fermentation.

Why it is uncertain

MUIS (Singapore) lists E627 as syubhah because it can come from yeast extract or sardines. SANHA lists the synthetic form as halaal. The two bodies do not agree, and the label never says how the E627 in a packet was made.

Its usual partners are uncertain too: E631 for the same animal-source reason, and E635, which is a mix of E627 and E631.

How to check it yourself

A vegan mark rules out fish sources.
A halal certificate means the source has been confirmed.
Otherwise, ask the manufacturer how their E627 is made. Ask about E631 in the same message: the two almost always come together.

Where you'll run into it

Crisps and flavoured snacks, instant noodles and seasoning sachets, stock cubes and bouillon, ready meals and soups.

Common questions

Is E627 the same as MSG?

No. MSG is E621. E627 is a different flavour enhancer, used next to MSG because together they taste much stronger.

Is E627 vegan?

Not always. It can be made from sardines. Only a vegan mark on the pack tells you the fish route was not used.

Sources

MUIS — Food Additive Listing — E627: syubhah (yeast extract / sardines)
SANHA — E-numbers guidance — E627: halaal (synthetic)
EU register of authorised food additives — E627 identity and permitted uses

Best-effort guidance compiled from sourced references — not a religious ruling and not a certification. Schools of thought differ, and manufacturers change formulations without notice. Please verify with the producer or your local authority when it matters. How we decide a verdict.