Condition
    Moderate Evidence
    Effectiveness 4/5

    Saffron for Depression

    Saffron extract at 30 mg/day reduced Hamilton Depression Rating Scale scores as much as fluoxetine 20-40 mg and imipramine 100 mg in head-to-head randomised trials, with fewer side effects.

    Overview

    Saffron has an unusually consistent set of trials for a spice. Across randomised studies in mild to moderate depression, standardised saffron extract outperformed placebo and, in several head-to-head comparisons, performed similarly to low-dose fluoxetine or imipramine. The limitations are real: most trials are small, short and conducted by a handful of Iranian research groups. That is why the verdict is likely rather than strong, and why saffron belongs in a conversation with a clinician rather than as a unilateral swap for prescribed treatment.

    What the evidence supports

    Clinically meaningful reduction in depression scores in mild to moderate depression over 6-8 weeks.

    How It Works

    Crocin and safranal, saffron key constituents, appear to inhibit reuptake of serotonin, dopamine and noradrenaline, while also reducing oxidative stress and inflammatory signalling in brain tissue. Both pathways are plausible contributors to the antidepressant signal.
    The monoaminergic component is what makes combination with prescribed antidepressants a question for a clinician rather than an experiment to run at home.

    Dosing & Protocol

    Nearly every positive trial used 30 mg per day of a standardised stigma extract, usually split into two doses. Higher doses have not shown extra benefit and move towards the toxicity threshold.

    Stay at 30 mg

    More is not better here. Doses of 5 g and above are considered toxic, and 30 mg per day is what the evidence supports.

    Evidence

    Two meta-analyses are linked to this pairing, both pooling randomised trials of saffron in depression and both reporting benefit over placebo.

    A double-blind, randomized and placebo-controlled trial of Saffron (Crocus sativus L.) in the treatment of anxiety and depression

    Score: 6/10
    2016
    rct
    n=60

    Mazidi M

    Saffron appears to have a significant impact in the treatment of anxiety and depression disorder.

    View source

    The Efficacy of Saffron in the Treatment of Mild to Moderate Depression: A Meta-analysis

    Score: 6/10
    2019
    meta_analysis
    0

    Toth B, Hegyi P, Lantos T +11 more

    Saffron reduced depressive symptoms compared with placebo and was non-inferior to conventional antidepressants in mild to moderate depression.

    View source

    Saffron for major depressive disorder and anhedonia: a systematic review and meta-analysis

    Score: 7/10
    2013
    meta_analysis

    Hausenblas HA, Saha D, Dubyak PJ +1 more

    Saffron significantly outperformed placebo and matched standard antidepressants on depression severity

    View source

    Effect of saffron supplementation on symptoms of depression and anxiety: a systematic review and meta-analysis

    Score: 6/10
    2019
    meta_analysis

    Marx W, Lane M, Rocks T

    Saffron could be an effective intervention for symptoms of depression and anxiety; however, due to evidence of publication bias and lack of regional diversity, further trials are required.

    View source

    Comparison of Crocus sativus L. and imipramine in the treatment of mild to moderate depression: a pilot double-blind randomized trial

    Score: 5/10
    2004
    rct
    n=30

    Akhondzadeh S, Fallah-Pour H, Afkham K +2 more

    Saffron 30 mg/day was as effective as imipramine 100 mg/day over six weeks, with fewer anticholinergic side effects.

    View source

    Saffron (Crocus sativus) for depression: a systematic review of clinical studies and examination of underlying antidepressant mechanisms of action

    Score: 6/10
    2014
    systematic_review
    0

    Lopresti AL, Drummond PD

    Clinical studies consistently favour saffron over placebo, with proposed serotonergic, anti-inflammatory and neuroprotective mechanisms.

    View source

    Saffron (Crocus sativus L.) and major depressive disorder: a meta-analysis of randomized clinical trials

    Score: 6/10
    2013
    meta_analysis
    0

    Hausenblas HA, Saha D, Dubyak PJ +1 more

    Saffron supplementation significantly reduced depression symptom scores versus placebo and performed comparably to standard antidepressants.

    View source
    Both analyses point the same way with similar effect sizes. The shared weakness is geographic and methodological concentration: small trials from overlapping research groups, with few independent replications elsewhere.

    Safety

    At 30 mg per day saffron is well tolerated, with occasional nausea, appetite change, headache or dry mouth. Very high doses are genuinely toxic, and saffron has traditional use as an abortifacient, so it should be avoided in pregnancy.

    Depression needs oversight

    Do not stop prescribed antidepressants to try saffron. Any worsening mood or thoughts of self-harm needs urgent professional help.

    Interactions & Conflicts

    Interacts withSeverityMechanismAction
    —Combine only under medical supervision
    —Mention use to the prescriber
    —Avoid

    References

    Frequently Asked Questions

    Medical Disclaimer

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    Individual results may vary. The statements on this website have not been evaluated by the Food and Drug Administration. Products and information are not intended to diagnose, treat, cure, or prevent any disease.