Saffron extract
Crocus sativus / affron / safranal · Brain
A spice extract with small randomized trials in low mood — modest reported effects, limited replication.
What the evidence says
Small RCTs — including active-comparator studies against standard antidepressant doses — report benefit for mild-to-moderate low mood and some appetite/snacking findings. The catch is study size and publication geography (many come from a small cluster of research groups), so "promising" is the ceiling of honest description.
What studies used
Nearly every trial used 28–30 mg/day of standardized extract. Trials assessed effects at 4–8 weeks of daily use.
Reported from published studies and product labelling — a record of what was used in research, not a recommendation. What is right for you is a conversation with a clinician.
Watch out for
- Reported side effects are mild (occasional nausea, headache) — but talk to a prescriber before combining with antidepressants
- High doses of actual saffron spice (grams) are toxic; extracts standardize far below that
Evidence base
established literature
Strong human evidence: either a phase 3 or 4 trial report alongside review-level evidence, or ten or more randomised controlled trial reports.
This letter measures how much human research exists, not whether it works for you — the tier above (Moderate) is the read on quality.
Research (12)
- The Effects of Crocus sativus (Saffron) on ADHD: A Systematic ReviewJ Atten Disord · 2024
- Effect of Saffron Versus Selective Serotonin Reuptake Inhibitors (SSRIs) in Treatment of Depression and Anxiety: A Meta-analysis of Randomized Controlled TrialsNutr Rev · 2025
- Effectivity of Saffron Extract (Saffr'Activ) on Treatment for Children and Adolescents with Attention Deficit/Hyperactivity Disorder (ADHD): A Clinical Effectivity StudyNutrients · 2022
- Saffron and its major constituents against neurodegenerative diseases: A mechanistic reviewPhytomedicine · 2024
- Saffron (Crocus sativus L.): A Source of Nutrients for Health and for the Treatment of Neuropsychiatric and Age-Related DiseasesNutrients · 2022
- Saffron (Crocus sativus) for depression: a systematic review of clinical studies and examination of underlying antidepressant mechanisms of actionHum Psychopharmacol · 2014
- Exploring the Potential of Saffron as a Therapeutic Agent in Depression Treatment: A Comparative ReviewYale J Biol Med · 2024
- Saffron anti-metastatic properties, ancient spice novel applicationCrit Rev Food Sci Nutr · 2022
- New horizons for the study of saffron (Crocus sativus L.) and its active ingredients in the management of neurological and psychiatric disorders: A systematic review of clinical evidence and mechanismsPhytother Res · 2024
- Crocus sativus (saffron) and age-related macular degenerationMed Hypothesis Discov Innov Ophthalmol · 2024
- Saffron improves the efficacy of immunotherapy for colorectal cancer through the IL-17 signaling pathwayJ Ethnopharmacol · 2025
- Saffron as a Promising Therapy for Inflammatory Bowel DiseaseNutrients · 2024
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