Named ingredient
Is L-theanine halal?
An amino acid from tea leaves, also made by fermentation. No named certifier page is cited yet.
An amino acid from tea leaves, also made by fermentation. No named certifier page is cited yet.
What the sources say
L-theanine is a tea-leaf amino acid, also fermented. No A/B ruling cited.
Quick facts
| Name | L-theanine |
|---|---|
| Also on labels as | theanine, suntheanine |
| Additive class | Named ingredient |
| Classification | Insufficient evidence |
| Last verified | 2026-09-16 |
Common questions
Is L-theanine halal?
L-theanine is classified as Insufficient evidence. An amino acid from tea leaves, also made by fermentation. No named certifier page is cited yet.
Is L-theanine halal or haram?
On the evidence cited on this page, L-theanine is insufficient evidence. Not enough reliable source evidence to classify Every position is attributed to a named certifier or scholarly body with a link, so you can verify it directly.
What else is L-theanine called on ingredient labels?
It can appear as: theanine, suntheanine.
Where does this page's information come from?
Every position on this page is attributed to a named certifier or scholarly body with a direct link, listed under 'What the sources say'. Muttoo aggregates and cites; it does not issue rulings.
Record ingredient-l-theanine · last verified 2026-09-16 · report an error