| Vegan? Yes | Vegetarian? Yes |
Classifications are made based on the available commercial supply of the ingredient, and are made based on the criteria on our classifications page.
Commercially available l-theanine is vegan and vegetarian.
L-theanine is an amino acid found abundantly in tea leaves.
Sources
- Dashwood, R., & Visioli, F. (2025). l-theanine: From tea leaf to trending supplement – does the science match the hype for brain health and relaxation? Nutrition Research, 134, 39–48.
https://doi.org/10.1016/j.nutres.2024.12.008