E-code guide
E633Calcium Inosinate
DoubtfulFlavor enhancer
E633

Calcium Inosinate

Flavor enhancer

SANHA classifies this as doubtful.
Based on 1 cited authority. Confidence: medium.

What authorities say

1 authority on record
1says Doubtful
Saying Doubtful1 of 1

Why this verdict

E633 is calcium inosinate, a flavour enhancer used in savoury snacks and seasonings. SANHA classifies E633 as Mushbooh and notes the source is inosinic acid from meat extract or dried sardines or yeast. No other major halal authority in the source corpus has published a per-additive position on E633. Without source disclosure the additive defaults to doubtful unless the product carries halal certification confirming a fish or yeast source.

Common questions

Is E633 halal?

Calcium Inosinate (E633) is classified doubtful. SANHA classifies it as doubtful.

Only SANHA has a published position on this additive. The verdict is provisional until more authorities weigh in.
Last reviewed by the HalalHQ research team in May 2026.