Crocin

PhytochemicalApocarotenoidBest with a meal

What is it

Crocin is a water-soluble carotenoid pigment responsible for the deep red-orange color of saffron (Crocus sativus stigmas) and gardenia fruit. It is the main bioactive component studied in saffron extracts.

Evidence for 3 uses

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Depression (mild to moderate)

Good Evidence

Multiple small randomized trials of saffron extract (standardized to crocin) show comparable efficacy to low-dose SSRIs for mild-to-moderate depression. Most trials are short and from a single research group.

Anxiety

Limited Evidence

Smaller trials suggest saffron extracts may reduce anxiety symptoms, often alongside antidepressant effects.

Age-related cognitive decline

Limited Evidence

Limited trials in mild cognitive impairment and Alzheimer disease suggest modest benefit, but evidence remains preliminary.

How it works

Crocin is a glycoside of crocetin. After oral ingestion, it is largely hydrolyzed to crocetin in the gut before absorption, which then enters circulation. Crocin and crocetin show antioxidant, anti-inflammatory, and neuroprotective activity in preclinical models. Proposed mechanisms include modulation of serotonin, dopamine, and glutamate neurotransmission, inhibition of acetylcholinesterase, and reduction of oxidative stress in neural tissue. Clinical research, largely from Iran where saffron is endemic, has focused on mood, mild cognitive complaints, and metabolic markers. Most trials use whole saffron extract standardized to crocin content rather than isolated crocin.

Dosage

Saffron extracts standardized to crocin (typically 2 percent crocin) are used at 28 to 30 mg per day in most clinical trials. Isolated crocin is not commonly available as a standalone supplement; doses studied range up to 20 to 30 mg per day.

When and how to take it

Saffron extracts standardized to crocin are typically taken with food, once or twice daily. In mood trials, doses are often split morning and evening. Effects on mood and cognition build gradually over 4 to 8 weeks.

3 commercial forms

Compare the main delivery options and what they’re best suited for.

Saffron extract (standardized to crocin)

The form used in nearly all clinical research. Branded extracts include affron and Satiereal.

Most studied form; typically 2 percent crocin.

Isolated crocin

Rarely sold as a standalone supplement.

Largely converted to crocetin in the gut.

Whole saffron threads (culinary)

Traditional source; therapeutic doses would require costly amounts.

Low absolute crocin content per culinary serving.

Safety

Crocin and saffron extracts at trial doses are generally well tolerated. Reported side effects include mild gastrointestinal upset, headache, dry mouth, and changes in appetite. Very high saffron doses (above 5 grams) can cause toxicity and uterine stimulation.

Who should be cautious

Pregnant women should avoid medicinal doses of saffron due to potential uterine-stimulating effects. People taking SSRIs, MAOIs, or other psychotropic medications should consult a clinician. Caution with bleeding disorders or before surgery.

Interactions

Crocin may have additive effects with antidepressants, sedatives, and antihypertensives based on its pharmacology. Caution with blood thinners as saffron has mild antiplatelet activity. Significant clinical interactions are not well documented at typical doses.

Food sources

Saffron (dried stigmas)

Amount
0.1 g (a pinch)
%DV
—

Gardenia fruit

Amount
Variable (traditional medicine)
%DV
—

Frequently asked questions

Is crocin the same as saffron?⌄

Crocin is the principal active pigment in saffron, but saffron also contains safranal, picrocrocin, and other compounds that may contribute to its effects.

How long until I notice mood effects?⌄

Clinical trials typically observe benefits at 4 to 8 weeks of consistent daily use, similar to conventional antidepressants.

References

Crocin on Wikidata — Wikidata link

Crocin (ChEBI:79068) — ChEBI link

Crocin (PubChem CID 5281233) — PubChem link

Crocin on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on Crocin (PubMed search) — PubMed link

Track Crocin with Pilora

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Evidence-based·How we grade evidence

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.