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Saffron

Saffron

Best for

Lift and steady your mood

Large effect, needs confirmation · 28–60 mg/day for 6–8 weeks · 3 studies , n=189

58 papers · 12 claims · 150 outcomes scored · 11 positive

Evidence summary

Evidence summary

Likely modest benefit

Saffron provides a likely modest benefit for depressive symptoms in adults, especially in mild-to-moderate depression, while evidence for anxiety and stress is thinner.

  • Across 12 studies (n=18,358), saffron improved depression symptoms, with pooled results consistently favoring saffron.2
  • The broader saffron literature spans 58 papers and 150 outcomes, but mood dominates the signal.
  • Evidence for anxiety, stress, and adolescent mood is promising but clearly thinner than depression trials.

Outcomes

What saffron actually does, by outcome

Each row is one outcome with effect size, evidence base, the dose that worked in trials, and time to first effect. Magnitude tiers come from native-unit MCID where available, Cohen's d otherwise.

Lift and steady your mood Large effect, needs confirmation

Good days come more often and bad ones feel less heavy.

3 RCTs n=189 28–60 mg 6–8 wk #1/20
33598475·35813851·41477128
Reduce everyday pain intensity Large effect, needs confirmation

Lower intensity, fewer flares, and longer stretches of relief.

2 meta-analyses n=42 15–100 mg 12 wk #10/56
33322318·40813999
Lift mood and reduce negativity Promising early signal

Fewer dark stretches and more spontaneous positive moments through the day.

2 RCTs n=169 28–30 mg 6–12 wk #2/6
34463070·40077679
Reduce emotional overwhelm Promising early signal

The background noise of worry, irritability, and low mood gets quieter.

2 RCTs n=144 28 mg 6–12 wk #3/7
34463070·35813851
Ease depression symptoms Likely modest benefit

Lowers the weight of sadness, low energy, and emotional numbness over weeks.

12 meta-analyses n=18k 0.6–300 mg 4–48 wk #2/41
22552758·23280545·24299602·29849461 +8 more
Ease winter depression symptoms Likely modest benefit

Compensates for the sunlight deficit when days get short.

11 meta-analyses n=18k 15–125 mg 4–48 wk #2/39
22552758·23280545·24299602·29849461 +7 more
Ease depression tied to chronic pain Likely modest benefit

When pain loosens its grip, mood follows.

11 meta-analyses n=18k 15–125 mg 4–48 wk #2/39
22552758·23280545·24299602·29849461 +7 more
Lower day-to-day anxiety Faint early signal

The background hum of worry that colors everything gets quieter.

4 meta-analyses n=278 0.6–300 mg 1–6 wk #9/48
34745923·36141931·37288021·40077679
Ease anxiety in older adults Faint early signal

Quiets the health worries and body tension that build with age.

4 meta-analyses n=278 0.6–300 mg 1–6 wk #9/45
34745923·36141931·37288021·40077679
Reduce pre-competition anxiety Faint early signal

Quiets the overthinking that hijacks execution right before you compete.

4 meta-analyses n=278 0.6–300 mg 1–6 wk #9/45
34745923·36141931·37288021·40077679
Reduce daily stress Faint early signal

Everyday pressure stops running your nervous system hot.

3 RCTs n=122 0.06–30 mg 4–8 wk
33598475·40698027·37447245
Improve everyday quality of life Not enough research

Fewer days where health problems dictate what you can and cannot do.

2 RCTs n=151 20–30 mg 4–6 wk
40077679·40698027

Forms & standardisation

The best human trial coverage comes from saffron stigma extract, not random whole-flower blends or vague 'saffron complex' formulas.135 On the label, look for a standardized extract that names marker compounds such as crocins, safranal, or a branded standardization system, because that gets you closer to what researchers actually tested.45 If a product only says 'saffron powder' and nothing else, you're guessing on potency.57

Risk profile

Adverse events and known drug interactions

Safety events

angina severe
COVID-19 severe
diverticulitis severe
hypomania moderate
decreased platelet count moderate
decreased leukocyte count moderate
decreased red blood cell count moderate
burning sensation in kidney (history of kidney stone) mild

Drug interactions

Valproate moderate decreases effect
Isoniazid moderate decreases concentration
Rifampicin moderate decreases concentration
Gentamicin moderate decreases concentration
Escitalopram moderate decreases effect

Co-studied with

Supplements that share evidence with saffron

Vitamine 40 shared outcomes · d=0.73
Probiotics 12 shared outcomes · d=0.23
Magnesium 12 shared outcomes · d=0.23
Drug:Metformin 9 shared outcomes · d=0.38
Baicalin 5 shared outcomes · d=0.54

Frequently asked

Common questions

Does saffron actually help mood?

Yes—its best human evidence sits around depressive symptoms, where repeated trials and meta-analyses show a small but real improvement over several weeks.123 That makes saffron more credible than most mood supplements, but it still isn't a magic switch.

How long does saffron take to work?

Most successful studies run for 4 to 8 weeks, and some go longer.134 This is a daily-use supplement, not a one-capsule rescue move.

Is saffron good for anxiety?

Early human studies suggest saffron can take the edge off everyday anxiety and stress, but the evidence is thinner and less consistent than it is for depressive symptoms.346 Right now, anxiety support looks interesting—not settled.

What kind of saffron supplement should you buy?

Go for a saffron stigma extract with a stated standardization, ideally naming compounds like crocins or safranal or a branded standardization marker.45 Generic 'saffron powder' tells you a lot less about what you're actually getting.

Can cooking saffron replace a supplement?

Not really. The trials use measured doses of extracts or carefully defined stigma preparations, so a few threads in food do not reliably match those protocols.145

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Sources

  1. 1. Crocus sativus L. in the treatment of mild-to-moderate depression: a double-blind, randomized and placebo-controlled trial (2005) ↑
  2. 2. Saffron (Crocus sativus L.) and major depressive disorder: a meta-analysis of randomized clinical trials (2013)
  3. 3. The effect of saffron supplementation on symptoms of depression and anxiety: a systematic review and meta-analysis (2019)
  4. 4. A randomized, double-blind, placebo-controlled trial of a saffron extract on mood and stress in healthy adults (2017)
  5. 5. Saffron (Crocus sativus) for depression: a systematic review of clinical studies and examination of underlying antidepressant mechanisms of action (2014)
  6. 6. A saffron extract for treating symptoms of anxiety and depression in adolescents: a randomized, double-blind, placebo-controlled trial (2021)
  7. 7. A review of the pharmacology, safety, and toxicology of saffron and its active constituents (2020)

Generated May 11, 2026

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