Key Findings
- Across 5 RCTs (177 participants), saffron was associated with a large reduction in depressive symptoms versus placebo (mean effect size 1.62, p<0.001).
- Against standard antidepressants, saffron showed broadly comparable effects on depressive symptoms.
- Studied doses were commonly around 30 mg/day of saffron extract over 6–8 weeks.
- Trials were small and mostly conducted by research teams in Iran, so larger independent and longer-term studies are needed.