Herb & supplement monograph

Saffron Drug Interactions, Uses, Effectiveness, Safety & More

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS ·Updated July 2026

What is this page for?

First and foremost: how Saffron interacts with medications. The heart of this page is the interaction list — every drug Saffron is known to interact with, and how serious each one is.

But these pages have grown well beyond that into a full monograph — what Saffron is, what people use it for and how strong the evidence is, its safety and side effects, and answers to the questions we’re asked most — written and reviewed by the clinical staff at HelloPharmacist. It’s educational information from our licensed clinical databases, not medical advice, and we don’t sell or endorse products. Our editorial policy

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Saffron Drug Interactions: The Bottom Line

From the HelloPharmacist Editorial Team · Updated July 2026

Based on the available evidence, the overall risk of a clinically significant Saffron drug interaction appears low for most people, though a few medication types deserve some care. None of the listed interactions are rated major, and all are graded moderate based mostly on theoretical or limited human evidence.

Interactions deserving the most attention

The best-supported concern involves diabetes medications, since saffron extract lowered fasting blood sugar in some studies when added to these drugs, which could increase the chance of low blood sugar. Saffron may also slow how the body clears caffeine, based on one small human study, and could add to the drowsiness of sedating medications, as saffron extract itself has caused sleepiness in clinical research. A possible additive drop in blood pressure with blood pressure medications is also worth watching, though the evidence there is weaker.

What the rest of the list means

Saffron's long interaction list mostly reflects these few broad categories, not hundreds of separately proven problems. Most concerns are theoretical, drawn from lab work, animal studies, or small human trials, and none has been firmly established as harmful in people. For most medications, no meaningful effect has been shown.

Check your medications against Saffron

Based on HelloPharmacist’s Saffron interaction data and reviewed under our editorial standards.

Interaction report

Drugs that interact with Saffron

521 medications have a known interaction with Saffron, graded by severity. Select any drug for the full evidence-based detail.

Don’t want to scroll the list? Just ask.

Tell us the medications you take and we’ll check each one against Saffron using our pharmacist-reviewed interaction data.

AI summaries are generated from our Saffron interaction data for education only — always confirm with your pharmacist. How we use AI

2,830 drugs

Read The List Like a Pharmacist

What Severity, Likelihood & Evidence Mean

Severity — How Serious It Can Be

Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
No known interaction. Checked against our sources with nothing documented — not the same as proven safety.

Likelihood — How Well It’s Documented

Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
Probable. Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
Possible. Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.

Where This Data Comes From

Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
Each drug listed above links to the full report for that exact Saffron combination — clinical detail, likelihood, evidence level, and citations.
Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

The big picture

The kinds of drugs Saffron affects

Every type of medication (drug category) Saffron is known to interact with. Open any category for the detail — or search your exact drug in the checker above.

All 4 drug categories Saffron interacts with

Antidiabetes DrugsAntihypertensive DrugsCaffeineCns Depressants

Antidiabetes Drugs

Theoretically, concomitant use of saffron with antidiabetes drugs might increase the risk of hypoglycemia.
Some clinical research shows that taking saffron extract reduces fasting levels of glucose when used in addition to hypoglycemic agents. However, saffron powder itself has not been shown to reduce fasting glucose levels.

Likelihood Possible Evidence B

Antihypertensive Drugs

Theoretically, concomitant use of saffron with antihypertensive drugs might have additive effects.
Animal and human research suggests that saffron extract can decrease blood pressure.

Likelihood Possible Evidence D

Caffeine

Theoretically, saffron might inhibit the metabolism of caffeine.
A small clinical study suggests that taking saffron powder 300 mg in 150 mL water daily for 5 days and then taking caffeine 200 mg seems to reduce caffeine metabolite levels in the saliva and urine in males, but not females. Theoretically, this may be due to the inhibition of cytochrome P450 1A2 by saffron.

Likelihood Possible Evidence B

Cns Depressants

Theoretically, concomitant use of saffron and CNS depressants might have additive sedative effects.
Clinical research shows that taking saffron extract 60 mg orally daily for 26 weeks can cause drowsiness and sedation. Animal research suggests that adding saffron to hexobarbital further increases sleeping and slows motor activity.

Likelihood Possible Evidence D

Monograph

Saffron: Uses, Safety & Side Effects

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Reviewed July 2026 ·

The bottom line

Saffron is a costly spice that has shown promise in early studies for mild-to-moderate depression and some mood and PMS symptoms, but most research uses small trials, so results are not definitive. It is generally well tolerated in food and small supplement amounts, but high doses can be harmful and it should be avoided in pregnancy. Talk to your pharmacist or doctor before using saffron supplements.

Scientific name: Crocus sativus
Family: Iridaceae
Part used: Dried stigmas of the flower
Common forms: Capsules, tablets, dried spice, extracts, tea

People commonly use it for

Depression and low mood
Anxiety
PMS symptoms
Memory and cognition
Eye health (age-related macular degeneration)

Popular and traditional uses — not proof it works. See “Uses & effectiveness” below for the evidence.

Safety at a glance

OverallUse caution

Likely safe in food amounts, but supplement doses should be used carefully and high doses can be toxic.

PregnancyLikely Unsafe

When used orally in amounts exceeding those commonly found in foods. Larger amounts of saffron have uterine stimulant and abortifacient effects; avoid...

Read the full pregnancy detail

BreastfeedingInsufficient reliable information

Insufficient reliable information available; avoid using.

Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center). Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

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Overview

Saffron comes from the dried red stigmas (thread-like parts) inside the flower of Crocus sativus, a purple crocus plant. It is grown mainly in Iran, India, Spain, and other parts of Southwest Asia and the Mediterranean. Because each flower produces only a few stigmas that must be picked by hand, saffron is one of the most expensive spices in the world.

People have used saffron for centuries as a cooking spice that adds a golden-yellow color and a mild, slightly bitter flavor. In traditional herbal medicine it has been used for mood, digestion, and many other purposes. Today it is also sold as a dietary supplement in capsules, tablets, and extracts.

How it works

Saffron contains several active compounds, including crocin and crocetin (which give the spice its color), safranal (responsible for its aroma), and picrocrocin (its bitter taste). Researchers believe these compounds act as antioxidants, helping to reduce oxidative stress in cells.

For mood, scientists think saffron may affect brain chemicals such as serotonin, which is involved in regulating emotions. This is one proposed reason it may have antidepressant-like effects. Most of these mechanisms come from laboratory and animal studies, so it is not fully clear how saffron works in the human body.

Effectiveness

Does Saffron work?

Here’s what the research actually shows for each use — graded by Natural Medicines and reviewed by Dr. Brian Staiger, PharmD.

Evidence overview · 44 uses evaluated

1 Possibly effective 43 Insufficient evidence

How to read these evidence grades

Natural Medicines’ 7-point scale. We show each rating’s label word-for-word.

1EffectiveStrong, consistent evidence it works.

2Likely EffectiveGood evidence, though not yet conclusive.

3Possibly EffectiveSome evidence suggests a benefit.

4Possibly IneffectiveSome evidence it may not help.

5Likely IneffectiveFairly strong evidence it doesn’t help.

6IneffectiveStrong evidence it doesn’t work.

7Insufficient Reliable Evidence to RateToo little research to say either way.

Possibly Effective Alzheimer disease