Herb Profile

Saffron

Crocus sativus

Saffron is the dried red stigmas of the Crocus sativus flower, whose carotenoid crocin and the volatile compound safranal are regarded as its main active constituents.

Last reviewed: •3 sources citedReport a correctionProfile-wide ·C Limited

Use extra caution — High doses may cause GI/CNS effects and uterine stimulation; avoid pregnancy level medicinal dosing; monitor with serotonergic drugs. Details

Evidence
Limited Evidence
Typical onset
Varies by prep
Safety rating
High caution
Best for
Mood Support, Antidepressant, Anti Anxiety, Stress
Avoid / review if
Pregnancy/Breastfeeding Without Clinician Supervision, Known Allergy To The Plant/Family, Use Caution With Serotonergic Medications And Anticoagulants.
Verdict: SaffronMaybe

Bottom line

One of the more compelling botanicals for mild low mood, with several controlled trials. It works slowly and is a support, not a substitute for care.
Evidence confidence
Moderate for mood — a genuinely interesting evidence base
Expected onset
2–4 weeks
Give it
6–8 weeks

Safety: High doses can cause side effects; keep to culinary/standardized amounts and involve a clinician for depression.

On the evidence: Multiple randomized trials for depressive symptoms, mostly small and short.

Best for

  • Low mood and mild depressive symptoms
  • Mood support with a food-grade botanical

Not ideal for

  • Acute anxiety relief
  • A sleep aid
  • Replacing prescribed treatment
Permanent link to this scientific verdict
How strong is the evidence?Moderate

Why not higher

  • Trials are small, short, and often industry-linked
  • Standardized extracts differ from culinary saffron
  • Long-term data is limited

Why not lower

  • Multiple randomized, placebo-controlled trials for mild low mood
  • Effects are directionally consistent across studies

Practical takeaway: A reasonable food-grade option for mild low mood over 6–8 weeks. It is a support, not a substitute for care — involve a clinician for depression.

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Saffron monograph visual
The Hippie Scientist

Safety

Safety & Cautions

High doses may cause GI/CNS effects and uterine stimulation; avoid pregnancy level medicinal dosing; monitor with serotonergic drugs.

High caution

Caution level: High. Multiple caution categories apply, or the record uses avoid/contraindication language.

  • Interaction-AwareMedication or interaction context is explicitly noted.
  • Pregnancy/Breastfeeding CautionPregnancy or breastfeeding caution language is present.
Detailed safety fields

Pregnancy, breastfeeding, and contraindications

  • Pregnancy/Breastfeeding Without Clinician Supervision
  • Known Allergy To The Plant/Family
  • Use Caution With Serotonergic Medications And Anticoagulants.

Safety classifications

  • Interaction-Aware: Medication or interaction context is explicitly noted.
  • Pregnancy/Breastfeeding Caution: Pregnancy or breastfeeding caution language is present.

Full safety note

  • High doses may cause GI/CNS effects and uterine stimulation; avoid pregnancy level medicinal dosing; monitor with serotonergic drugs.

Safety labels

  • Interaction-Aware
  • Pregnancy/Breastfeeding Caution

Evidence-based safety

Caution when combined

Severity and certainty are shown separately. A high-priority caution can still be theoretical: these pairings are screened from shared contraindication mechanisms and are not automatically documented clinical interactions. Provenance identifies the source fields that produced each flag; it does not upgrade the certainty of the pairwise claim.

High-Priority Caution

173 flagged pairings

Serotonergic activity · Bleeding / anticoagulant risk

Representative pairings are shown below. Large mechanism groups are intentionally summarized to keep profiles focused and crawl-efficient.

Serotonergic activityCertainty: Theoretical

Data provenance recorded for 26 of 26 pairings in this mechanism group.

+14 more pairings share this mechanism. Use the Safety Checker to review a specific combination.

Bleeding / anticoagulant riskCertainty: Theoretical

Data provenance recorded for 147 of 147 pairings in this mechanism group.

+135 more pairings share this mechanism. Use the Safety Checker to review a specific combination.

Evidence

Evidence Summary

Evidence lens

Read as directional context, not settled clinical proof.

LimitedLimited Evidence

Human clinical evidence: Present in source signals

Mechanistic / preclinical: Mechanism mapped — Inflammatory Signaling Modulation · Oxidative Stress Modulation · Neurotransmitter Modulation

Research maturity: Emerging research — Long Term Human Evidence May Be Limited.

Safety boundary: Safety note available — High doses may cause GI/CNS effects and uterine stimulation; avoid pregnancy level medicinal dosing; monitor with serotonergic drugs.

This profile cites 3 human studies.

Study design details
Evidence Grade

Grade C: Limited Evidence

Evaluation of methodological rigor, population reach, and evidence alignment.

Design Match
Meta-analysis
Risk of Bias
Low
Consistency
Consistent
Strongest recorded design is a meta-analysis, drawn from 8 recorded studies, 8 in people. No disagreement is recorded across them.
How evidence grades work

Each grade reflects the strength and consistency of published human evidence — not marketing claims. Grades are based on study count, design quality, effect size, consistency, and recency.

Strong
Multiple RCTs, consistent direction, adequate effect size
Moderate
Some RCTs or consistent observational data in humans
Preliminary / Mixed
Animal or in-vitro only, or conflicting human data
Traditional / Theoretical
Traditional use only; no controlled human trials
Clinical Study Summaries (8)8 human evidence sources · 3 human trials · ~118 participants across 1 human evidence source with reported N · Consistency not yet classifiable

Filter by study class

Showing 8 of 8 studies.

What the evidence actually shows

This table contains 8 structured sources, including 8 human evidence sources; 3 are human trials. Across 1 human evidence source with a reported sample size, the approximate participant total is 118; overlapping publications may include some of the same people.

StudyDesignNDoseDurationPopulationOutcomeResult & magnitudeSource

Effect of Saffron Versus Selective Serotonin Reuptake Inhibitors (SSRIs) in Treatment of Depression and Anxiety: A Meta-analysis of Randomized Controlled Trials

Background
Meta-analysis

Statistically combines results from multiple eligible studies; confidence still depends on the quality, consistency, and directness of those studies.

—————Saffron did not differ significantly from SSRIs on pooled efficacy outcomes, while adverse events favored saffron. | No significant difference between saffron and SSRIs for depression (SMD 0.10, 95% CI -0.09 to 0.29) or anxiety (SMD 0.04, 95% CI -0.22 to 0.29).PubMed →

A 2026 GRADE-assessed meta-analysis of 34 randomized trials found lower self-reported Beck Depression Inventory and Beck Anxiety Inventory scores with saffron, but clinician-rated HDRS and HARS outcomes and POMS were not significantly improved. Heterogeneity was very high for the BDI and BAI analyses, so self-report and clinician-rated findings should remain separate.

Background
Meta-analysis

Statistically combines results from multiple eligible studies; confidence still depends on the quality, consistency, and directness of those studies.

—————A 2026 GRADE-assessed meta-analysis of 34 randomized trials found lower self-reported Beck Depression Inventory and Beck Anxiety Inventory scores with saffron, but clinician-rated HDRS and HARS outcomes and POMS were not significantly improved. Heterogeneity was very high for the BDI and BAI analyses, so self-report and clinician-rated findings should remain separate.PubMed →

The Effects of Crocus sativus (Saffron) on ADHD: A Systematic Review

Seyedi-Sahebari S et al. · J Atten Disord · 2024

Background
Systematic review

Uses a predefined method to find and evaluate relevant studies, but may or may not pool their results statistically.

n=118—————PubMed →

Herbal medicine for depression and anxiety: A systematic review with assessment of potential psycho-oncologic relevance

Yeung KS et al. · Phytother Res · 2018

Background
Systematic review

Uses a predefined method to find and evaluate relevant studies, but may or may not pool their results statistically.

——————PubMed →

A recent systematic safety review evaluated adverse events from saffron clinical trials and case reports. Safety findings remain dose-, formulation-, population-, and co-medication-specific and should not be collapsed into a blanket statement that saffron is universally safe.

Background
Systematic review

Uses a predefined method to find and evaluate relevant studies, but may or may not pool their results statistically.

—————A recent systematic safety review evaluated adverse events from saffron clinical trials and case reports. Safety findings remain dose-, formulation-, population-, and co-medication-specific and should not be collapsed into a blanket statement that saffron is universally safe.PubMed →

An Examination into the Effects of a Saffron Extract (Affron) on Mood and General Wellbeing in Adults Experiencing Low Mood: A Randomized, Double-Blind, Placebo-Controlled Trial

Background
Randomized controlled trial

Randomly assigns participants to interventions or controls, reducing many sources of bias when the trial is conducted well.

—————The primary depression outcome improved, but many broader secondary wellbeing outcomes did not clearly differ from placebo.PubMed →
Show 2 more studies

The effects of a saffron extract (Affron®) on mood, sleep, self-esteem, and exploratory measures of physical appearance in women aged 50 to 70 years experiencing low mood and poor sleep: a randomised, double-blind, placebo-controlled trial

Background
Randomized controlled trial

Randomly assigns participants to interventions or controls, reducing many sources of bias when the trial is conducted well.

—————28 mg/day for 12 weeks improved depression-related scores, self-esteem, and sleep-related impairment versus placebo.PubMed →

Effectivity of Saffron Extract (Saffr'Activ) on Treatment for Children and Adolescents with Attention Deficit/Hyperactivity Disorder (ADHD): A Clinical Effectivity Study

Blasco-Fontecilla H et al. · Nutrients · 2022

Background
Controlled trial

Compares an intervention with a control group but may lack random assignment or other safeguards of a strong randomized trial.

——————PubMed →

Dosing & Timing

No standardized dose
Preparation specific; use standardized product label for Threads or standardized extract and require source backed dosage review before therapeutic claims.
How Saffron works

Simplified mechanism pathway based on preclinical and pharmacological evidence. Does not confirm clinical efficacy.

Mechanism Pathway — How Saffron Works

How Saffron WorksSaffron acts on biological target pathways via anti inflammatory, leading to mood support.SaffronBiological TargetBiological pathwayAnti InflammatoryMood SupportObservable outcomeAntioxidantParallel pathway
CompoundTarget / ReceptorMechanismEffect / Outcome
Mechanisms & biological pathways (preclinical)
  • Inflammatory Signaling Modulation
  • Oxidative Stress Modulation
  • Neurotransmitter Modulation
  • Stress Response Modulation

Active Compounds

Key constituents studied in Saffron, with full pharmacology and safety profiles.

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Explore botanicals with similar chemistry, effects, or safety considerations in the Botanical Activity Atlas.

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Compare side-by-side tradeoffs or verify active marker guidelines.

Sourcing options

Saffron product picks

Affiliate recommendations for Saffron. Review safety, dose, and product quality before buying.

As an Amazon Associate I earn from qualifying purchases. We may earn a commission from qualifying links at no extra cost to you. How we stay independent.

  • Budget example

    NOW Foods

    NOW Saffron 50 mg

    Budget product example for a standardized saffron extract capsule for mood support.

    Selection criteria

    • • Budget pick for a standardized saffron extract capsule for mood support.
    View product details

  • Featured example

    Life Extension

    Life Extension Optimized Saffron

    Product example for Satiereal or affron-branded saffron extract, the most clinically studied forms for mood and appetite.

    Selection criteria

    • • Best overall for Satiereal or affron-branded saffron extract, the most clinically studied forms for mood and appetite.
    View product details
Product form & quality guidelines

When sourcing Saffron, verify the label for:

  • Standardized extract: Confirm active content percentages on the supplement facts panel (e.g. standardized to specific marker compounds) rather than simple raw herb weights.
  • Third-party testing: Look for independent purity labels (USP, NSF, ConsumerLab, or Eurofins) to ensure the product is free from heavy metals, solvents, and contaminants.
  • Form bioavailability: Ensure the form matches evidence-supported configurations (e.g. standardized active extracts like bacosides, withanolides, or curcuminoids) for optimal onset and digestion tolerance.

Safety first · Harm reduction

This information is educational and not medical advice. Start low, avoid risky combinations, and consult a licensed clinician before making health decisions—especially if you use medications, have diagnosed conditions, or are pregnant/breastfeeding.

Learn how we evaluate confidence, safety, and intensity on the methodology page.

By Willie B. Randolph III

Founder & Head Researcher · Oak Ridge, TN · Last reviewed August 2026

Editorial Review

Checked against primary sources, cited evidence, and contraindication language before publication. Evidence claims, safety language, and affiliate modules are reviewed independently. Not personal medical advice.

Editorial Standards →

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