Last reviewed May 2026 · 1 min read
Is Calcium Ascorbate vegan?
Also known as: E302, Ester-C
E-number: E302
Vegan
Suitable for a vegan diet.
Yes — Produced synthetically from plant-based ascorbic acid and calcium carbonate.
01 · The basics
What is Calcium Ascorbate?
A calcium salt of ascorbic acid (Vitamin C), used as a buffered, non-acidic vitamin supplement and food preservative.
02 · The source
Where it comes from
Produced synthetically from plant-based ascorbic acid and calcium carbonate. It is 100% vegan.
Frequently asked
FAQ
Is E302 vegan?
Yes, it is a mineral-based synthetic vitamin.
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