Suntheanine (branded, fermentation-derived)
Suntheanine (branded, fermentation-derived) is a tier 1 form of L-Theanine, used in 0 on-market products .
0
on-market products
tier 1
quality tier
n/a
elemental fraction
Why this tier: The specific branded ingredient used as the study article in many published human L-theanine RCTs, giving it a deep clinical evidence trail among commercial forms; its >99% L-isomer purity is a manufacturer-sourced figure that was not independently verified. Superiority to a verified-pure generic is not confirmed by a head-to-head PK/outcomes trial -- this tier reflects depth of clinical usage, not proven PK superiority.
Source: used as the study article across many L-theanine RCTs; purity claim is manufacturer-sourced
Brands using this form
No on-market brand data available.