Last reviewed May 2026 · 1 min read

Is Polysorbate 80 vegan?

Also known as: E433

E-number: E433

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Source can be plant or animal.

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In short

It depends — The oleic acid component can be animal-derived or vegetable-based.

01 · The basics

What is Polysorbate 80?

A synthetic emulsifier used in vaccines and liquid medicines.

02 · The source

Where it comes from

The oleic acid component can be animal-derived or vegetable-based.

Frequently asked

FAQ

Is Polysorbate 80 vegan?

Verification is needed due to potential animal-derived fatty acids.

Commonly found in

VaccinesEye dropsLiquid vitamins
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