Chamomile can modestly improve certain aspects of sleep, particularly how often you wake up during the night and how easily you fall asleep. But it won’t necessarily help you sleep longer or feel more rested the next day. A 2024 meta-analysis of ten clinical trials involving 772 participants found that chamomile significantly improved overall sleep quality scores, yet had no measurable effect on total sleep duration or daytime functioning.
What Chamomile Actually Does for Sleep
The picture from clinical research is more nuanced than “chamomile helps you sleep.” When researchers pooled data from multiple trials, they found chamomile reduced scores on a standard sleep quality questionnaire by nearly 2 points on average, a statistically meaningful improvement. But digging into the specific sleep measures tells a more interesting story.
Chamomile’s strongest effect was on nighttime awakenings. Two out of three studies that tracked this found people woke up less often after falling asleep. Three out of four studies also found improvements in how quickly people fell asleep. Where chamomile fell short was sleep duration: pooling three studies showed no significant increase in total time asleep. Sleep efficiency, the percentage of time in bed actually spent sleeping, didn’t improve either. And across three studies measuring daytime fatigue, chamomile made no difference.
In other words, chamomile seems to help you fall asleep faster and stay asleep more consistently, but it doesn’t add hours to your night or make you feel noticeably sharper the next morning. That’s a useful distinction if you’re deciding whether it’s worth trying.
How It Works in Your Body
Chamomile contains a plant compound called apigenin that interacts with the same calming system in your brain that anti-anxiety medications target. In animal studies, apigenin reduced physical activity and produced a sedative-like state by activating receptors for GABA, the brain’s main “slow down” chemical. This is a different pathway than prescription sleep medications use, which may explain why chamomile’s effects are milder.
Clinical trials have typically used chamomile extract standardized to contain at least 2.5 mg of apigenin per dose. One major insomnia trial used 270 mg of concentrated chamomile extract twice daily (equivalent to about 15 grams of dried herb per day) for 28 days. That’s considerably more than a single cup of tea delivers, which is worth keeping in mind if you’re comparing your nightly mug to the doses used in research.
How Chamomile Compares to Other Herbal Options
Among herbal sleep aids, chamomile has weaker clinical support than some alternatives. Valerian root has more robust evidence from multiple randomized trials and meta-analyses showing improvements in both sleep quality and the time it takes to fall asleep. Kava has demonstrated benefits for anxiety-related sleep problems. Hops, when combined with valerian, has also shown positive results.
A 2024 review in Psychiatry Investigation classified chamomile’s evidence as “limited,” noting that positive results came mainly from studies in older adults and postmenopausal women. That doesn’t mean chamomile is ineffective for other groups, just that the research hasn’t proven it broadly yet. Still, chamomile has a significantly better safety profile than kava (which can affect the liver) and is easier to incorporate into a nightly routine as a simple tea.
How to Get the Most From Chamomile Tea
If you’re drinking chamomile as tea rather than taking extract capsules, preparation matters. Steep your chamomile in hot water for at least 5 to 7 minutes. Some sources recommend going as long as 15 minutes for a stronger brew, which will extract more of the active compounds. Use a lid or cover your cup while steeping to keep the volatile oils from escaping with the steam.
Timing also matters. Sleep specialists generally recommend drinking chamomile tea about 45 to 60 minutes before bed. This gives the calming compounds time to take effect while also giving your body time to process the liquid so you’re less likely to wake up needing the bathroom. If nighttime urination is already a problem for you, keep your portion small or shift your tea earlier in the evening.
Who Should Be Cautious
Chamomile belongs to the same plant family as ragweed, and cross-reactivity is common. Among people with ragweed allergies (which account for roughly three out of four allergy sufferers), an estimated 20 to 30 percent also react to chamomile. If ragweed triggers your allergies, start with a very small amount or skip chamomile entirely. Chrysanthemums and sunflowers are in the same botanical family and can cause similar cross-reactions.
Chamomile can interact with blood thinners like warfarin, potentially increasing bleeding risk. It may also affect transplant medications such as cyclosporine. If you take either type of medication, check with your pharmacist before adding chamomile to your routine. The interaction risk is higher with concentrated supplements than with occasional cups of tea, but it’s worth knowing about regardless.
During pregnancy, chamomile raises specific concerns. Some evidence suggests it could stimulate uterine contractions, and higher rates of preterm labor and miscarriage have been reported with heavy consumption. An occasional cup is likely different from daily concentrated use, but most guidelines recommend limiting intake during pregnancy and breastfeeding.
Setting Realistic Expectations
The clinical trials that showed benefits ran for two to four weeks before measuring results. A single cup of chamomile tea tonight probably won’t transform your sleep. The ritual itself, warming a mug, stepping away from screens, sitting quietly, likely contributes to whatever benefit people experience. That’s not a weakness. Consistent sleep routines are one of the most effective tools for better sleep, and chamomile tea fits naturally into that kind of wind-down habit.
Where chamomile seems to genuinely help is with the fragmentation of sleep: waking up repeatedly, struggling to drift off. If those are your main complaints, it’s a reasonable, low-risk option to try for a few weeks. If your issue is total sleep time or daytime exhaustion, the current evidence suggests chamomile alone is unlikely to solve the problem.