RŌNIN V6 · ON THE LABEL AT ROW 08 OF 40
L-Theanine.
≥98% L-isomer, suntheanine®. In Rōnin at 200 mg per serving - published to the milligram, tested every batch.
200 mgPER SERVING · 30 SERVINGS PER POUCH

AS PRINTED ON THE LABEL
- FORM
- ≥98% L-isomer
- DOSE PER SERVING
- 200 mg
- STANDARDISATION
- Suntheanine®
- GROUP
- Cognitive, Stress & Adaptogens
WHY IT’S IN
On the label for a reason.
L-Theanine sits in the Cognitive, Stress & Adaptogens group at 200 mg - ≥98% L-isomer; Suntheanine®. The 3 papers below are the reasoning: we cite them, and we claim nothing beyond them.
THE RESEARCH · 3 PEER-REVIEWED PAPERS
Peer-reviewed. Or it is not on the page.
Human research supporting this ingredient at this dose. Every entry names its journal, carries its PubMed ID, and links to the source.
- 01PMID 18681988
The combined effects of L-theanine and caffeine on cognitive performance and mood.
Owen GN, et al. (2008). Nutr Neurosci. 11(4):193–8.
READ ON PUBMED → - 02PMID 31623400
Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial.
Hidese S, et al. (2019). Nutrients. 11(10):2362.
READ ON PUBMED → - 03PMID 18296328
L-theanine, a natural constituent in tea, and its effect on mental state.
Nobre AC, et al. (2008). Asia Pac J Clin Nutr. 17 Suppl 1:167–8.
READ ON PUBMED →
REFERENCES VERIFIED AGAINST NCBI · TITLES AS PUBLISHED
Browse the full research library →WORKS ALONGSIDE · SAME LABEL GROUP
THE HONEST LIMITS
We publish the dose and the studies, and we claim nothing beyond them. If the evidence changes, this page changes.