Saffron for Sleep: What the Trials Found, the Dose and Timing, and a Bedtime Recipe

Saffron probably helps sleep a little. A handful of small randomised trials, mostly from the last six years, gave adults with mild sleep complaints 14 to 28 mg of standardised saffron extract a day for four to six weeks and found modest improvements in sleep quality, time to fall asleep and how people felt on waking, compared with placebo. The effect sizes are small to moderate, the trials are short and small, and saffron is not a substitute for treating a sleep disorder. But as an evening habit, a few threads in warm milk, it is cheap, pleasant and has better evidence than most things sold for sleep.

This guide goes through what the trials actually found, how saffron might work, the dose and timing, how it compares with melatonin and chamomile, who should be careful, and a bedtime recipe. It summarises research and is not medical advice; see our disclaimer.

What the trials found

The sleep research on saffron is recent and comes from a few groups, which is worth knowing when weighing it.

A randomised, placebo-controlled trial published in 2020 in the Journal of Clinical Sleep Medicine gave 63 adults with self-reported poor sleep 14 mg of a standardised saffron extract twice a day for 28 days. The saffron group reported better sleep quality on validated questionnaires and improved mood on waking compared with placebo; the extract was well tolerated.

A 2021 trial in Nutrients gave adults with mild to moderate sleep disturbance 15.5 mg of a saffron extract daily for six weeks, with sleep tracked by questionnaire and actigraphy. The saffron group reported improved sleep quality and reduced time awake after falling asleep; objective measures moved in the same direction but less decisively.

Earlier work from Japan studied crocetin, a saffron compound, in healthy adults with mild sleep complaints and reported small improvements in sleep efficiency on electroencephalography. Several Iranian trials of saffron for depression and anxiety also recorded better sleep as a secondary outcome.

Put together: consistent, modest, short-term improvements in subjective sleep quality in people with mild complaints. No large trials, no trials in clinically diagnosed insomnia, no long-term data.

How it might work

Saffron’s compounds, crocin, crocetin and safranal, have measurable effects on serotonin signalling, on inflammation and oxidative stress, and in animal studies on sleep-regulating pathways. The sleep benefit in human trials tracked improvements in mood, which fits saffron’s better-established effect on mild depression and anxiety. Whether saffron helps sleep directly or mostly by easing low mood and rumination is not settled. For a person lying awake, the distinction may not matter.

Dose and timing

Dose. Fourteen to 28 mg a day of saffron, as used in the trials. In threads that is about 7 to 15 of good Kashmiri Mongra, since a dried stigma weighs roughly 2 mg. Saffron dosage per day has the conversions.

Timing. In the evening, about an hour before bed. One trial split the dose morning and evening; taking the whole dose at night avoids the occasional daytime drowsiness some people report.

Form. Threads steeped in warm milk or water for ten minutes release the water-soluble crocin and most of the safranal. Standardised capsules give a fixed dose. Powder is the least reliable form because it is the easiest to fake; threads vs powder explains why.

Duration. Trials ran four to six weeks before measuring. Give it a month before deciding.

Compared with melatonin and chamomile

Melatonin has the strongest evidence for shifting sleep timing, as in jet lag or delayed sleep phase, and modest evidence for insomnia. It is a hormone, works within an hour, and does nothing for mood. Saffron works slowly and seems to act on mood and sleep together. There is no known interaction and some people take both.

Chamomile has a small evidence base for sleep quality, similar in size to saffron’s, and a long tradition. The two combine naturally in a bedtime tea; our saffron tea recipe includes a chamomile version.

Valerian has mixed evidence and a strong smell. Lavender oil capsules have decent evidence for anxiety-related sleep problems. None of these is a substitute for addressing the usual causes: late caffeine, screens, irregular hours, alcohol, untreated apnoea.

Who should be careful

Saffron at these doses is well tolerated. The cautions are the general ones: pregnant women should keep to culinary amounts; people with bipolar disorder should avoid supplement doses because of case reports of mania; anyone on antidepressants, blood thinners or blood pressure medication should ask the prescriber; and anyone taking prescription sleeping pills should not add saffron without advice, since both can cause drowsiness. Saffron side effects covers these in detail. Never exceed 1.5 g a day.

A bedtime saffron milk

Warm 250 ml of milk, or oat or almond milk, until steaming. Put 8 to 12 threads in two tablespoons of it, cover and leave ten minutes until the milk is deep gold, then stir it back in with a lightly crushed cardamom pod and a teaspoon of honey. Drink it slowly, an hour before bed, with the lights low. That is roughly 20 mg of saffron, inside the trial range, and a routine that most people find they look forward to.

If the milk goes orange within seconds and the threads turn pale, your saffron is dyed, and you are not taking saffron. Real threads release colour slowly and stay red. How to spot fake saffron has the tests. Ours is tested lot by lot, with the crocin number on the vial; see the saffron page.

Read next: Saffron milk recipe and Saffron for depression and anxiety.

Questions people ask

Does saffron help you sleep? +

Probably a little. Several small randomised trials of standardised saffron extract at 14 to 28 mg a day over four to six weeks reported better sleep quality, easier falling asleep and better mood on waking than placebo, in adults with mild sleep complaints. The effects are modest, the trials are small and short, and saffron is not a treatment for diagnosed insomnia. As a nightly ritual with a plausible small benefit, it is reasonable.

How much saffron should I take for sleep? +

The trials used 14 mg of a standardised extract once or twice a day, so 14 to 28 mg. In threads, that is roughly 7 to 15 of good Kashmiri saffron, steeped in warm milk or water an hour before bed. More does not help and above 1.5 g a day is unsafe.

Does saffron make you drowsy during the day? +

At trial doses, drowsiness is an occasional mild side effect reported by a few percent of people, usually when saffron is taken in the morning. Taking it in the evening sidesteps this. Saffron is not a sedative in the way a sleeping pill is.

Can I take saffron with melatonin or other sleep aids? +

There is no known interaction between saffron and melatonin, and the two work differently. Combining saffron with prescription sleeping pills, sedating antidepressants or alcohol could add to drowsiness; ask your doctor before mixing them. If you take an antidepressant for sleep or mood, discuss saffron with the prescriber.

Is saffron milk good before bed? +

It is a good evening drink and the traditional way to take saffron at night. Warm milk with four to six threads, a little honey and a cardamom pod, drunk an hour before bed, delivers roughly 10 mg of saffron, a little below the trial dose. Double the threads if you want to match the trials. Either way the warmth and the routine do some of the work.