Ashwagandha vs Omega-3

for cognition

Stronger evidence: Ashwagandha

Stronger effect: unknown

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

For cognition, Ashwagandha has the stronger evidence grade.

Ashwagandha

grade C low certainty

preliminary improvements in memory/executive function; small trials

300–600 mg/day, adults

Omega-3

not well studied very-low certainty

not adequately studied for cognition in healthy adults

sources: PMID:42220661