N-Acetylcysteine vs Omega-3

for mood

Stronger evidence: tie

Stronger effect: Omega-3

Safety: Omega-3 carries a serious interaction; N-Acetylcysteine has none recorded.

For mood, the two are evidence-matched; the difference is in effect and safety.

grade C low certainty

preliminary evidence as an adjunct in some psychiatric conditions; not established as a standalone

1200–2400 mg/day, adults

grade C moderate certainty

small benefit for depressive symptoms, clearest with higher-EPA formulations

1–2 g EPA, adults with depression

sources: PMID:10000012 · PMID:20000102