L-Theanine vs Omega-3

for cognition

Stronger evidence: L-Theanine

Stronger effect: unknown

Safety: Omega-3 has the more serious interaction profile (minor vs serious).

For cognition, L-Theanine has the stronger evidence grade.

grade C moderate certainty

improves attention and reduces distraction, especially combined with caffeine

100–200 mg, adults

not well studied very-low certainty

not adequately studied for cognition in healthy adults

sources: PMID:20000107