Supplements for mood

Ranked by evidence grade. Nothing here is sold to you.

St. John's Wortgrade Bmoderate certaintyeffective for mild-to-moderate depression in trials
Saffrongrade Bmoderate certaintymultiple RCTs show benefit for mild-to-moderate depressive symptoms, comparable to low-dose SSRIs in small trials
Vitamin Dgrade Clow certaintysmall mood benefit, mostly in people who are deficient
5-HTPgrade Clow certaintypreliminary antidepressant signal; small, lower-quality studies
N-Acetylcysteinegrade Clow certaintypreliminary evidence as an adjunct in some psychiatric conditions; not established as a standalone
Omega-3grade Cmoderate certaintysmall benefit for depressive symptoms, clearest with higher-EPA formulations
Creatinegrade Clow certaintyemerging evidence as an adjunct for depressive symptoms; trials small
Zincgrade Clow certaintymay augment antidepressant response; deficiency-correction likely matters
Probioticsgrade Clow certaintysmall effects on mood/anxiety in some "psychobiotic" trials; strain-specific, heterogeneous
Turmericgrade Clow certaintycurcumin may reduce depressive symptoms as an adjunct; bioavailability-limited
Folatestudied, no effectmoderate certaintyFolic acid not recommended for unipolar depression
Vitamin Cstudied, no effectmoderate certaintyNot recommended for unipolar depression
Myo-Inositolstudied, no effectmoderate certaintyNot recommended for unipolar depression
Magnesiumstudied, no effectmoderate certaintyNot recommended for unipolar depression
Rhodiolastudied, no effectmoderate certaintyNot recommended for mood disorders