Omega-3 vs L-Theanine
for cognition
Stronger evidence: L-Theanine
Stronger effect: unknown
Safety: Omega-3 has the more serious interaction profile (serious vs minor).
For cognition, L-Theanine has the stronger evidence grade.
L-Theanine
grade C moderate certainty
improves attention and reduces distraction, especially combined with caffeine
100–200 mg, adults
sources: PMID:20000107