Last reviewed May 2026 · 1 min read

Is L-Theanine (Fermented) vegan?

Also known as: Theanine

Vegan

Suitable for a vegan diet.

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In short

Yes — Produced via bacterial fermentation.

01 · The basics

What is L-Theanine (Fermented)?

A relaxation-promoting amino acid.

02 · The source

Where it comes from

Produced via bacterial fermentation. 100% vegan.

Frequently asked

FAQ

Is L-Theanine always vegan?

Almost all commercial theanine is synthetic or fermented, making it vegan.

Commonly found in

NootropicsSleep aids
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