Last reviewed May 2026 · 1 min read

Is Dipotassium Guanylate vegan?

Also known as: E628

E-number: E628

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Source can be plant or animal.

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In short

It depends — Like guanylic acid, its source can be either plant/microbial fermentation or fish extract.

01 · The basics

What is Dipotassium Guanylate?

A potassium salt of guanylic acid used as a flavor enhancer.

02 · The source

Where it comes from

Like guanylic acid, its source can be either plant/microbial fermentation or fish extract. Verification is needed.

03 · Alternatives

Best vegan alternatives

Vegan MSG

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Frequently asked

FAQ

Is E628 vegan?

It depends on the source of the guanylate. Always check for vegan labeling or contact the brand.

Why use potassium instead of sodium?

It is often used in 'low sodium' products to provide the same flavor enhancement without adding extra sodium to the nutritional profile.

Commonly found in

Low-sodium instant soupsDiet savory snacksCanned meals

Other flavoring ingredients

Castoreum

Not Vegan

A yellowish exudate from the castor sacs of mature beavers.

MSG (E621)

Vegan

A flavor enhancer that provides umami taste, common in savory snacks and Asian dishes.

E631 (Disodium inosinate)

Check the Label

A flavor enhancer commonly found in instant noodles and potato chips.

View all flavoring ingredients →

Keep exploring

Related ingredients

E422 (Glycerol / Glycerin)

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A sweet, syrupy liquid used as a humectant in foods and cosmetics.

E920 (L-Cysteine)

Check the Label

A dough conditioner used in commercial bread baking.

Calcium Carbonate

Check the Label

A common mineral used as a white food coloring, an anti-caking agent, and a calcium supplement.

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