Chamomile tea might make bedtime feel calmer, but research has not shown that it reliably helps people fall asleep, stay asleep, or sleep longer. It is not an established treatment for insomnia.
The evidence is easy to overstate because studies have tested very different products. A cup made from dried flowers is not equivalent to a standardized extract capsule, concentrated drops, chamomile jelly, a multi-herb blend, or inhaled essential oil. Most positive findings also come from small, short studies based on sleep questionnaires rather than measurements of sleep itself.
What the overall research found
A 2024 systematic review identified ten controlled trials involving 772 participants. The studies lasted from two days to one month, and each enrolled between 34 and 110 people. They included older adults, postmenopausal women, postpartum women, people with insomnia, and people with conditions such as heart failure or chronic kidney disease. They also used different chamomile preparations 1.
When five studies were combined, participants taking chamomile reported a modest improvement on the Pittsburgh Sleep Quality Index. Results varied widely between studies, however. Chamomile did not improve sleep duration in the pooled analysis. Sleep efficiency did not improve in two studies and worsened in one, while measures of daytime functioning did not improve in three studies 1.
These limits matter. A sleep questionnaire captures how someone experienced their nights over a period of time. It does not directly measure when sleep began, how often the person woke, or how much time was actually spent asleep. The review found that nine of the ten studies had a high risk of bias, and only one checked both whether blinding worked and whether the product had the expected purity or potency. The review's results were based on subjective outcomes, not actigraphy or laboratory sleep studies 1.
The overall signal is therefore possible benefit, not dependable proof. It also does not answer the narrower question of what an ordinary cup of chamomile tea does.
The tea-specific evidence is very limited
The most directly relevant trial included 80 Taiwanese women with poor sleep after childbirth. Half were assigned to drink one cup of German chamomile tea daily for two weeks, while the control group received usual postpartum care. The tea group reported an improvement on one part of a postpartum sleep questionnaire related to physical symptoms. The groups did not differ on the study's measures at the later four-week follow-up 2.
This study shows why a cautious answer is appropriate:
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it examined a specific postpartum population, not adults generally
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it lasted only two weeks
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sleep was self-reported rather than measured by actigraphy or polysomnography
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the control group did not receive a placebo beverage, so participants knew whether they were following the tea ritual
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the improvement was limited to part of one questionnaire and did not persist at follow-up
A postpartum result cannot be assumed to apply to chronic insomnia, menopause, anxiety-related sleep trouble, or an occasional restless night. It also does not establish an ideal brewing strength or bedtime dose.
Extract studies do not prove that tea works
One of the better-controlled trials randomly assigned 34 adults with chronic primary insomnia to a standardized chamomile extract or placebo for 28 days. The researchers found no statistically significant differences in sleep time, sleep efficiency, time to fall asleep, time awake during the night, sleep quality, number of awakenings, or insomnia severity 3.
That study was small and used sleep diaries rather than objective sleep measurements, so it cannot rule out every possible effect. More importantly for tea drinkers, its concentrated extract represented an amount of flower material that the authors said could not feasibly be delivered as tea 3.
Other trials in older or postmenopausal adults have also used capsules, extracts, syrups, or drops. A positive result from one of those preparations does not establish the effect of a beverage. Extraction method, plant species, flower content, concentration, and product quality can all differ.
What about apigenin?
Chamomile contains apigenin, a plant flavonoid often used to explain its proposed calming effect. Laboratory and animal findings have led to hypotheses involving brain receptors related to sleep and sedation. A plausible mechanism is not the same as evidence that a cup of tea contains a reliable dose, reaches the relevant tissue at that dose, or improves sleep in people 1.
There are no established tea instructions based on apigenin content. Chamomile products often do not state how much apigenin they contain, and the 2024 review found poor characterization of many products used in the trials 1. Apigenin supplements should also not be treated as interchangeable with chamomile tea.
Aromatherapy is a separate route of exposure. Smelling chamomile oil does not provide evidence about drinking tea. Multi-ingredient “sleep teas” create another problem: any effect or side effect could come from valerian, passionflower, lavender, lemon balm, caffeine-containing tea leaves, or another ingredient rather than chamomile.
A practical way to try chamomile tea
If you enjoy chamomile and none of the safety concerns below apply, it is reasonable to use an ordinary cup as part of a wind-down routine. Treat it as a beverage, not a treatment dose.
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Choose a single-ingredient product if you want to know how you respond to chamomile. Check the species and full ingredient list.
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Brew it according to the package directions. There is no evidence-based amount or steeping time that treats insomnia.
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Do not make increasingly concentrated infusions or add extract capsules because one cup had no noticeable effect.
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Drink it early enough that the volume itself does not wake you to urinate. There is no proven 30-, 45-, or 60-minute window in which chamomile must be consumed.
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Notice separate outcomes: feeling calmer, falling asleep sooner, waking less, total sleep, morning alertness, and bathroom trips. A pleasant ritual may be worth keeping even when it does not act like a sleep medicine.
People who already wake to urinate may prefer a smaller cup earlier in the evening or no bedtime drink. Do not restrict daytime fluid enough to become dehydrated. NIDDK advises that fluid amount and timing should be individualized, particularly for people with bladder symptoms or health conditions that affect fluid needs 4.
Safety and interactions
Chamomile in amounts commonly found in tea and food is likely safe for most people, but “natural” does not mean free of side effects or interactions. NCCIH reports uncommon nausea, dizziness, and allergic reactions, including rare severe reactions 5.
Plant allergies
People allergic to ragweed, chrysanthemums, marigolds, daisies, or related plants are more likely to react to chamomile 5. Do not test it as a sleep aid if you have had a severe reaction to one of these plants. Stop drinking it if you develop itching, hives, swelling, wheezing, vomiting, or dizziness. Trouble breathing, throat or tongue swelling, or faintness needs emergency care.
Medicines and combined sedation
Reported or suspected interactions include warfarin, some medicines processed by the liver, and sedatives 5. Ask a pharmacist or clinician before using chamomile regularly if you take prescription medicines, especially a blood thinner or a medicine that makes you sleepy.
Do not deliberately combine concentrated chamomile products with alcohol, sleep medicines, sedating antihistamines, or other sedating herbs to make the effect stronger. If chamomile makes you dizzy or drowsy, do not drive or operate equipment.
Pregnancy and breastfeeding
Safety during pregnancy and breastfeeding has not been established 5. Ask the obstetric, midwifery, or pediatric care team about the exact product and amount rather than assuming that tea, concentrated extract, and multi-herb blends have the same risk.
Children
The available sleep evidence does not establish chamomile tea as an insomnia treatment for children 1. Do not use tea, drops, extracts, or supplements as a child's insomnia treatment without guidance from the child's clinician. Check every blend for other herbs and keep hot drinks and concentrated products out of young children's reach.
When tea is not enough
A cup of tea should not delay assessment when sleep trouble is persistent, worsening, or affecting mood, concentration, work, school, or driving. Seek care sooner for loud snoring with gasping, an urge to move the legs at night, unintended daytime sleep, a sharply reduced need for sleep with unusual energy or impulsivity, or other concerning symptoms.
For chronic insomnia, the 2023 European insomnia guideline recommends cognitive behavioral therapy for insomnia as first-line treatment and does not recommend herbal remedies because the evidence is insufficient 6. CBT-I addresses the patterns that keep insomnia going and is different from a list of general sleep-hygiene tips.
The bottom line
Chamomile tea may be a comforting caffeine-free beverage, and some people may feel calmer after drinking it. Current research does not show that it reliably treats insomnia or improves objective sleep.
The only directly relevant tea trial was short, limited to postpartum women, and found a temporary improvement in one part of a sleep questionnaire. Broader reviews mix tea with extracts and other preparations, use small samples, and rely heavily on subjective outcomes. Enjoy chamomile if it suits you, but do not increase the dose, combine sedating products, or postpone effective insomnia care in search of a stronger effect.
