L-Theanine (generic/unbranded)
L-Theanine (generic/unbranded) is a tier 2 form of L-Theanine, used in 1,997 on-market products .
1,997
on-market products
tier 2
quality tier
n/a
elemental fraction
Why this tier: Chemically identical to branded forms when purity is verified, but some generic products have tested as racemic (D/L) mixtures rather than pure L-isomer -- quality is manufacturer-dependent, not guaranteed by the name alone.
Source: purity/isomer distinction discussed in industry comparative literature -- independent verification recommended