Kesar (Saffron)

Crocus sativus
Kesar (Saffron), or Crocus sativus, is a highly prized spice in Ayurveda, traditionally used for its supposed balancing effects on Vata and Kapha doshas, while potentially increasing Pitta. Widely valued for its claimed mood-enhancing and complexion-improving properties, this precious spice is prevalent in various traditional formulations and culinary applications across many cultures.
PLANT FAMILY
Iridaceae (Iris)
PARTS USED
Stigma, Style
AYURVEDIC ACTION
Vata ↓, Pitta ↑, Kapha ↓
ACTIVE COMPOUNDS
Crocin (0.5-1.5%)

What is Kesar (Saffron)?

Kesar, universally recognized as Saffron, is a spice derived from the flower of Crocus sativus, commonly known as the saffron crocus. This vibrant purple flower, belonging to the Iridaceae (Iris) family, is unique for producing the world's most expensive spice from its delicate stigmas and styles. Each bloom yields just three threads, necessitating labor-intensive harvesting by hand, which contributes to its high value.

Originating from Greece, saffron is now cultivated across various regions, with Iran being the largest producer. Its distinctive golden-orange hue, pungent aroma, and subtly sweet, earthy flavor are highly prized in culinary applications, coloring and flavoring dishes. Beyond its gastronomic appeal, saffron has a rich history in traditional medicine and cultural rituals, valued for both its aesthetic and perceived therapeutic properties.

Other Names of Kesar (Saffron)

  • Saffron
  • Crocus sativus
  • Kumkuma
  • Zafran
  • Zafaran
Pollen of Crocus sativus

Benefits of Kesar (Saffron)

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<h3> Absolute Contraindications of Kesar (Saffron) </h3> <h4> Pregnancy - risk of uterine stimulation and pregnancy loss [In layman terms]</h4> <ul> <li>🟣 <li>Recommendation: Avoid saffron supplements and high medicinal doses during pregnancy; do not self-dose beyond culinary amounts and consult your obstetrician before any therapeutic use. <li>Reasoning: High or concentrated doses of saffron have been shown to stimulate uterine activity and may increase risk of bleeding or miscarriage; clinical and review data recommend caution during pregnancy. <li>Scientific_Study_Title: Therapeutic effects of saffron (Crocus sativus L) on female reproductive system disorders: A systematic review. <li>Scientific_Study_Authors: Mohammadi, Haghpanah, et al. (authors as listed in PubMed record). <li>Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/38558480/ <li>Scientific_Study_Excerpt: <p>Paraphrase: This systematic review summarized 50 studies (in vitro, animal and human) on saffron’s effects on the female reproductive system and highlights that saffron can regulate sex hormones, ovulation and uterine function; several studies note uterine stimulant and emmenagogue effects at higher doses and recommend caution in pregnancy.</p> <p>Quoted snippet (short): "Saffron has ... uterine stimulant effects." </p> </ul> <h4> Active bleeding or use of anticoagulant / antiplatelet medications [In layman terms]</h4> <ul> <li>🔴 <li>Recommendation: If you are on blood thinners (warfarin, DOACs like rivaroxaban) or have bleeding disorders, avoid saffron supplements and check with your prescribing clinician before any use. <li>Reasoning: Clinical and experimental studies show saffron can alter platelet function and coagulation markers and case reports link saffron use with bleeding when combined with anticoagulants. <li>Scientific_Study_Title: Effect of Crocus sativus L. (saffron) on coagulation and anticoagulation systems in healthy volunteers. <li>Scientific_Study_Authors: Heidari, Vahabzadeh, et al. <li>Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/23733488/ <li>Scientific_Study_Excerpt: <p>Paraphrase: In a double-blind placebo-controlled trial, short-term saffron tablets (200-400 mg/day for 7 days) altered some coagulation parameters in volunteers, suggesting an effect on fibrinogen and clotting markers, which could theoretically increase bleeding risk in susceptible people.</p> <p>Quoted snippet (short): "saffron tablets influenced on bleeding time." </p> </ul> <h4> Known allergy to saffron or related plant components [In layman terms]</h4> <ul> <li>⚠️ <li>Recommendation: Do not use saffron if you have a known allergy to saffron or have experienced respiratory/skin reactions to it; seek allergy testing or medical advice before re-exposure. <li>Reasoning: Occupational and clinical reports document IgE-mediated sensitization to saffron pollen and components, with cases of rhinitis, asthma, contact dermatitis and rare anaphylaxis. <li>Scientific_Study_Title: Sensitization to the flower of saffron: occupational allergy study in Spain. <li>Scientific_Study_Authors: Morales-Benito, et al. (reported in occupational allergy studies - see full PubMed record). <li>Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/9226057/ <li>Scientific_Study_Excerpt: <p>Paraphrase: Evaluation of saffron workers showed skin and serum IgE positivity in some individuals and clinical symptoms (asthma, rhinoconjunctivitis) provoked by saffron pollen/stamen exposure, confirming saffron can act as an occupational allergen.</p> <p>Quoted snippet (short): "Three of them were sensitized to saffron pollen and stamen proteins." </p> </ul> <h4> High-dose or toxic dosing (acute overdose) [In layman terms]</h4> <ul> <li>☠️ <li>Recommendation: Do not take very large doses of saffron (grams/day) - supplements should stay within doses tested in clinical trials (usually tens of milligrams), and any unusually high dosing requires urgent medical advice. <li>Reasoning: Toxicology reviews and animal data report adverse systemic effects and hematologic changes at multi-gram doses; doses above ~5 g/day are associated with toxicity and much higher amounts can be lethal in reports. <li>Scientific_Study_Title: Toxicology effects of saffron and its constituents: a review. <li>Scientific_Study_Authors: Ghorbani (and coauthors) - details as listed on PubMed. <li>Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/28293386/ <li>Scientific_Study_Excerpt: <p>Paraphrase: Reviews of animal and human data indicate saffron is safe at low therapeutic doses but becomes toxic at high intakes; adverse outcomes reported include severe gastrointestinal symptoms, hematologic changes and organ effects when exposure reaches gram-level doses.</p> <p>Quoted snippet (short): "Therapeutic doses ... exhibit no significant toxicity; high doses cause adverse effects." </p> </ul> <h3> Relative Contraindications of Kesar (Saffron) </h3> <h4> Concomitant use with SSRIs or other serotonergic drugs </h4> <ul> <li>🟡 <li>Recommendation: Use with caution - consult a prescriber if you are taking SSRIs, SNRIs, MAOIs or other serotonergic medicines; monitor for increased side effects and avoid self-combining without medical oversight. <li>Reasoning: Saffron shows serotonergic effects and has been compared with SSRIs; combining may theoretically increase serotonergic activity, so caution is advised though clinical reports of serotonin syndrome are sparse. <li>Scientific_Study_Title: Effect of Saffron Versus Selective Serotonin Reuptake Inhibitors (SSRIs) in Treatment of Depression and Anxiety: A Meta-analysis of Randomized Controlled Trials. <li>Scientific_Study_Authors: (Meta-analysis authors listed on PubMed record). <li>Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/38913392/ <li>Scientific_Study_Excerpt: <p>Paraphrase: Meta-analysis across trials shows saffron has antidepressant effects comparable to SSRIs in some studies; mechanistic data support serotonergic and neurotrophic modulation, so combined therapy should be supervised.</p> <p>Quoted snippet (short): "saffron could be a potential SSRI alternative." </p> </ul> <h4> Use with antihypertensive therapy or in baseline low blood pressure </h4> <ul> <li>🟡 <li>Recommendation: If you take blood-pressure medications or have low BP, talk to your clinician before starting saffron; monitor blood pressure especially during initiation. <li>Reasoning: Saffron can relax blood vessels and lower systolic/diastolic blood pressure in studies, which may potentiate antihypertensive drugs and cause symptomatic hypotension in some people. <li>Scientific_Study_Title: Smooth muscle relaxant activity of Crocus sativus (saffron) and its constituents: possible mechanisms. <li>Scientific_Study_Authors: Hosseinzadeh and colleagues (as listed in PubMed record). <li>Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/26468456/ <li>Scientific_Study_Excerpt: <p>Paraphrase: Experimental and some human data indicate saffron and its constituents relax vascular smooth muscle through several receptor and ion-channel mechanisms and can lower blood pressure; caution is recommended with antihypertensives.</p> <p>Quoted snippet (short): "saffron stigma lowers systolic blood pressure." </p> </ul> <h4> Use with drugs metabolized by CYP enzymes (CYP3A4, CYP1A2, CYP2E1) </h4> <ul> <li>🟡 <li>Recommendation: If you take drugs with narrow therapeutic windows metabolized by CYP enzymes (eg. cyclosporine, some statins, certain antipsychotics), check with a pharmacist or clinician before using saffron supplements. <li>Reasoning: In vitro and review data show saffron constituents can modulate expression or activity of several CYP isoforms, potentially altering the metabolism and blood levels of coadministered drugs. <li>Scientific_Study_Title: Effects of Crocus sativus and its active constituents on cytochrome P450: a review. <li>Scientific_Study_Authors: (Authors listed in PubMed record). <li>Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/40167627/ <li>Scientific_Study_Excerpt: <p>Paraphrase: The review documents saffron and its compounds affecting CYP1A, CYP3A4 and CYP2E1 activities in experimental studies, suggesting possible clinical interactions with drugs cleared by these enzymes.</p> <p>Quoted snippet (short): "saffron ... affect the expression or activity of some CYP isoforms." </p> </ul> <h4> Breastfeeding / nursing mothers (limited human data) </h4> <ul> <li>🟡 <li>Recommendation: Use caution and consult a pediatrician/OB-GP before taking concentrated saffron products while breastfeeding; prefer culinary amounts until safety is confirmed. <li>Reasoning: Human data are limited; animal studies report changes in neonates when mothers received high doses and some clinical reviews recommend caution until more safety data exist. <li>Scientific_Study_Title: Nephrotoxicity and hepatotoxicity evaluation of Crocus sativus stigmas in neonates of nursing mice. <li>Scientific_Study_Authors: (as listed in PubMed record). <li>Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/24772401/ <li>Scientific_Study_Excerpt: <p>Paraphrase: In an animal study, saffron given to lactating mothers produced biochemical changes in neonates (increased serum urea nitrogen and some histologic kidney changes), supporting caution with high doses during breastfeeding.</p> <p>Quoted snippet (short): "saffron increased serum urea nitrogen ... histological changes seen in kidney of neonates." </p> </ul>

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<h4> Nausea, vomiting, stomach upset, headache, drowsiness </h4> <ul> <li>🤢 <li>Side effect summary: Common mild side effects reported with saffron supplements include nausea, stomach discomfort, headache and drowsiness. <li>Recommendation: Start with low, clinically studied doses (commonly 15-30 mg/day in trials); if these symptoms occur, stop and consult your healthcare provider. For persistent/severe symptoms seek medical care. <li>Reasoning: Randomized trials and meta-analyses report these as the most frequently observed adverse events, usually mild and transient. <li>Severity Level: Mild <li>Scientific_Study_Available: Yes <li>Scientific_Study_Title: Safety and Efficacy of Saffron (Crocus sativus L.) for Treating Mild to Moderate Depression: A Systematic Review and Meta-analysis. <li>Scientific_Study_Authors: Lopresti AL, et al. (as listed on PubMed). <li>Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/32221179/ <li>Scientific_Study_Excerpt: <p>Paraphrase: Across included RCTs, saffron showed efficacy for mild-to-moderate depression with adverse events similar to placebo or lower than conventional antidepressants; reported side effects included nausea, sedation, headache and changes in appetite, generally mild and not significantly different from comparators.</p> <p>Quoted snippet (short): "Nausea, sedation, appetite fluctuation, and headache were among the most common adverse effects reported." </p> </ul> <h4> Hypotension / lightheadedness </h4> <ul> <li>🩺 <li>Side effect summary: Some people may feel lightheaded or have low blood pressure after saffron, especially if combined with antihypertensive drugs. <li>Recommendation: Measure blood pressure when starting saffron if you are on BP medicines; if symptomatic (dizziness, faintness) stop and consult your clinician. <li>Reasoning: Mechanistic and clinical data show saffron relaxes vascular smooth muscle and can lower systolic and diastolic pressures in some studies. <li>Severity Level: Moderate <li>Scientific_Study_Available: Yes <li>Scientific_Study_Title: Smooth muscle relaxant activity of Crocus sativus (saffron) and its constituents: possible mechanisms. <li>Scientific_Study_Authors: Hosseinzadeh H., et al. <li>Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/26468456/ <li>Scientific_Study_Excerpt: <p>Paraphrase: Review of in vitro and in vivo evidence indicates saffron constituents produce vascular relaxation via multiple pathways and have been associated with decreases in blood pressure in experimental and some clinical settings, supporting caution with antihypertensive therapy.</p> <p>Quoted snippet (short): "saffron stigma lowers systolic blood pressure." </p> </ul> <h4> Increased bleeding / abnormal bleeding (including epistaxis, gum bleeding) </h4> <ul> <li>🩸 <li>Side effect summary: Cases of bleeding have been reported when saffron was used together with anticoagulant/antiplatelet drugs, and bleeding signs have appeared in overdose. <li>Recommendation: Avoid saffron supplements if you are taking blood thinners or have bleeding tendency; talk to your prescriber before use. <li>Reasoning: Case reports and clinical trials show saffron can affect clotting and there is at least one reported bleeding event in a patient on rivaroxaban who took saffron supplement. <li>Severity Level: Severe <li>Scientific_Study_Available: Yes <li>Scientific_Study_Title: Bleeding Complication in a Patient with Concomitant Use of Rivaroxaban and Saffron Supplement: A Case Report. <li>Scientific_Study_Authors: (authors listed on PubMed record). <li>Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/35440328/ <li>Scientific_Study_Excerpt: <p>Paraphrase: This case report describes a patient on rivaroxaban who developed significant mucosal bleeding (epistaxis and gum bleeding) after starting a saffron supplement, suggesting a possible herb-drug interaction increasing bleeding risk.</p> <p>Quoted snippet (short): "acute onset epistaxis and bleeding gums following the concomitant use of rivaroxaban and saffron." </p> </ul> <h4> Allergic reactions (skin rash, respiratory symptoms, rare anaphylaxis) </h4> <ul> <li>🤧 <li>Side effect summary: Saffron can trigger allergic symptoms in sensitized individuals - skin rashes, rhinitis, asthma exacerbations, and rarely anaphylaxis. <li>Recommendation: Stop saffron and seek urgent care if you develop breathing difficulty, swelling, or severe rash; for mild reactions see an allergist for testing. <li>Reasoning: Immunologic studies and occupational reports demonstrate IgE sensitization and confirmed clinical reactions in exposed workers or consumers. <li>Severity Level: Moderate (can be Severe in anaphylaxis) <li>Scientific_Study_Available: Yes <li>Scientific_Study_Title: Specific IgG antibodies (total and subclasses) against Saffron pollen: correlation with IgE and immediate skin reactions. <li>Scientific_Study_Authors: (authors as listed on PubMed record). <li>Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/18094441/ <li>Scientific_Study_Excerpt: <p>Paraphrase: Study of atopic subjects found higher specific IgE to saffron pollen and a high rate of positive skin tests; clinical evidence supports that saffron pollen and flower parts can provoke immediate allergic reactions in susceptible people.</p> <p>Quoted snippet (short): "specific saffron pollen IgE ... found significantly higher in the allergic subjects." </p> </ul>

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<h4> Anticoagulants / Antiplatelet agents (eg. warfarin, rivaroxaban, aspirin)</h4> <ul> <li>Interaction_Details: Saffron can affect platelet aggregation and some coagulation markers; combining saffron with blood thinners may increase bleeding risk (reports include mucosal bleeding and altered clot parameters). <li>Severity: Severe <li>Recommendation: Avoid concurrent use of concentrated saffron supplements with anticoagulants/antiplatelet therapy unless monitored closely by a clinician; if accidental co-use occurs, monitor for bleeding and check coagulation studies as advised. <li>Scientific_Study_Available: Yes <li>Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/35440328/ <li>Scientific_Study_Title: Bleeding Complication in a Patient with Concomitant Use of Rivaroxaban and Saffron Supplement: A Case Report. <li>Scientfic_Study_Authors: Lotfi, A., et al. (authors as listed in PubMed record). <li>Scientific_Study_Excerpt: <p>Paraphrase: The report documents an elderly patient on rivaroxaban who developed significant epistaxis and gum bleeding shortly after starting a saffron supplement; the authors advise caution and further surveillance of herb-DOAC interactions.</p> <p>Quoted snippet (short): "acute onset epistaxis and bleeding gums following the concomitant use of rivaroxaban and saffron supplement." </p> </ul> <h4> Selective Serotonin Reuptake Inhibitors (SSRIs) and other serotonergic medicines</h4> <ul> <li>Interaction_Details: Saffron exhibits serotonergic activity and has been used as an antidepressant in trials; combining with SSRIs could theoretically augment serotonergic effects and may increase risk of serotonin-related adverse events. <li>Severity: Moderate <li>Recommendation: If you are taking SSRIs/SNRIs/MAOIs, consult the prescriber before starting saffron; monitor for agitation, tremor, hyperreflexia or other serotonin-excess symptoms. <li>Scientific_Study_Available: Yes <li>Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/38913392/ <li>Scientific_Study_Title: Effect of Saffron Versus Selective Serotonin Reuptake Inhibitors (SSRIs) in Treatment of Depression and Anxiety: A Meta-analysis of Randomized Controlled Trials. <li>Scientfic_Study_Authors: (meta-analysis authors listed on PubMed record). <li>Scientific_Study_Excerpt: <p>Paraphrase: Meta-analytic evidence shows saffron’s antidepressant effects can be similar to SSRIs in some trials, indicating shared pharmacologic targets (eg. serotonergic pathways); this supports theoretical interaction potential when combined with serotonergic drugs.</p> <p>Quoted snippet (short): "saffron could be a potential SSRI alternative." </p> </ul> <h4> Antihypertensive agents (eg. ACE inhibitors, beta-blockers, calcium channel blockers) </h4> <ul> <li>Interaction_Details: Saffron may lower blood pressure via vascular smooth-muscle relaxation; combined use with antihypertensive drugs can potentiate hypotensive effects. <li>Severity: Moderate <li>Recommendation: Monitor blood pressure closely when starting or stopping saffron if you are on antihypertensives. Adjust medication only under clinician guidance. <li>Scientific_Study_Available: Yes <li>Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/26468456/ <li>Scientific_Study_Title: Smooth muscle relaxant activity of Crocus sativus (saffron) and its constituents: possible mechanisms. <li>Scientfic_Study_Authors: Hosseinzadeh H., et al. <li>Scientific_Study_Excerpt: <p>Paraphrase: Experimental evidence shows saffron constituents relax blood vessels through multiple receptor and ion-channel mechanisms and can reduce systolic blood pressure in clinical observations, hence additive hypotensive interactions are plausible.</p> <p>Quoted snippet (short): "relaxant effects ... on blood vessels." </p> </ul> <h4> Drugs metabolized by Cytochrome P450 enzymes (eg. cyclosporine, many statins, some antipsychotics) </h4> <ul> <li>Interaction_Details: Saffron constituents can modulate CYP isoforms (CYP3A4, CYP1A2, CYP2E1) in experimental studies; this may change blood levels of drugs processed by these enzymes. <li>Severity: Mild-Moderate (depends on the co-drug’s therapeutic index) <li>Recommendation: If you take medications mainly cleared by CYP3A4/CYP1A2/CYP2E1, check with a pharmacist/clinician before using saffron supplements; therapeutic drug monitoring may be appropriate for narrow-index drugs. <li>Scientific_Study_Available: Yes <li>Scientific_Study_Link: https://pubmed.ncbi.nlm.nih.gov/40167627/ <li>Scientific_Study_Title: Effects of Crocus sativus and its active constituents on cytochrome P450: a review. <li>Scientfic_Study_Authors: (authors listed on PubMed record). <li>Scientific_Study_Excerpt: <p>Paraphrase: Review of preclinical and some clinical data indicates saffron and its constituents influence expression and activity of several major CYP enzymes, suggesting potential for herb-drug interactions with medications metabolized by these pathways.</p> <p>Quoted snippet (short): "saffron ... affect the expression or activity of some CYP isoforms, including the CYP1A1/2, CYP3A4, and CYP2E1 subfamily." </p> </ul>