Last reviewed May 2026 · 1 min read
Is Benzalkonium Chloride vegan?
Also known as: BAK, BAC, Alkyl dimethyl benzyl ammonium chloride
Vegan
Suitable for a vegan diet.
Yes — It is a synthetic chemical produced in a lab.
01 · The basics
What is Benzalkonium Chloride?
A quaternary ammonium compound used as a biocide, a cationic surfactant, and a phase transfer agent.
02 · The source
Where it comes from
It is a synthetic chemical produced in a lab. It contains no animal products.
03 · Alternatives
Best vegan alternatives
Alcohol (Ethanol)
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Frequently asked
FAQ
Is benzalkonium chloride vegan?
Yes, it is 100% synthetic.
Why is it used in eye drops?
It is a very effective preservative that prevents the growth of bacteria in the bottle once it has been opened.
Commonly found in
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