- Chamomile tea is a caffeine-free herbal infusion made from the dried flowers of German chamomile (Matricaria chamomilla), the species in nearly every commercial teabag.
- The best-supported benefit is modest: a 2024 meta-analysis of ten trials (772 participants) found improved subjective sleep quality, but most positive studies used concentrated extracts of 220 to 1,500 mg, a stronger dose than a cup of tea delivers.
- Skip it if you are allergic to ragweed, daisies, chrysanthemums or marigolds; chamomile is in the same plant family, and rare reactions up to anaphylaxis are on record.
- Ask a doctor first if you take warfarin, sedatives or hormonal contraception; a published case links chamomile use with internal bleeding in a warfarin patient.
- Buy whole dried flower heads rather than teabag dust, steep one to two teaspoons in just-off-the-boil water for four to five minutes, and keep the cup covered to trap the aromatic oils.
Chamomile is one of the most widely drunk herbal infusions in the world, and it carries more bedtime folklore than almost any other drink. Some of that folklore holds up in clinical trials; much of it does not. This guide grades the major health claims against the published research, names the people who have real reasons to skip the cup, and finishes with the practical part most benefit lists leave out: how to brew the flowers properly and how to buy ones worth steeping.
What Chamomile Tea Actually Is
Chamomile tea is not tea in the botanical sense. It contains no leaf from the Camellia sinensis plant, which places it among the herbal infusions that are not true tea and means it is completely caffeine-free at any strength, with nothing to decaffeinate in the first place. What goes into the cup are dried flower heads: small white-petaled blossoms with domed yellow centers that look like miniature daisies. That resemblance is no coincidence, because chamomile belongs to the daisy family, Asteraceae, a fact that matters later when we get to allergies.
The flowers earn their reputation from their chemistry. The flavonoid apigenin binds to the same class of GABA receptors targeted by prescription sedatives, which is the leading preclinical explanation for chamomile’s calming effect. The essential oil of German chamomile also carries chamazulene, an anti-inflammatory compound that turns the distilled oil a deep ink-blue. A brewed cup delivers these compounds in modest amounts, a point that matters more than most benefit lists admit and one this guide returns to below.
German vs Roman Chamomile: Two Different Plants
Two different plants share the name, and nearly every confusion about chamomile starts here. German chamomile (Matricaria chamomilla, also listed as Matricaria recutita) is an upright annual that grows to around knee height and produces the mildly sweet, apple-and-honey cup most people know. Roman chamomile (Chamaemelum nobile) is a low, spreading perennial with thicker leaves, a fruitier scent and a noticeably more bitter infusion, grown today mostly for essential oil and as a garden groundcover. When a box is labeled simply chamomile, it is almost always the German species; the National Institutes of Health fact sheet on chamomile focuses on the German plant for the same reason.
| Trait | German chamomile | Roman chamomile |
|---|---|---|
| Botanical name | Matricaria chamomilla (syn. M. recutita) | Chamaemelum nobile |
| Growth habit | Upright annual, roughly knee height | Low, spreading perennial |
| Flower | Larger head with a hollow, cone-shaped yellow center | Smaller head with a flatter center and thicker leaves below |
| Aroma and flavor | Sweet, honeyed, apple-like; gentle in the cup | Fruity but noticeably more bitter when brewed |
| Main role in tea | The standard for nearly all commercial chamomile tea | Mostly essential oil production and garden planting |
Where Chamomile Comes From
Chamomile appears in ancient medical writing from Egypt, Greece, Rome and China, used for centuries before anyone could name a flavonoid. The modern trade has kept the Egyptian connection: Egypt ranks among the world’s leading suppliers of dried chamomile flowers, with commercial fields along the Nile Valley and Delta, where a long growing season and fertile alluvial soil favor the crop. The plant also grows readily across temperate Europe, which is how the German species earned its common name.
For travelers, chamomile is a supermarket herb with an origin story worth chasing. Specialty merchants sell Egyptian whole flower chamomile as a named origin much the way a tea list names Darjeeling, and the difference is visible in the bag: intact flower heads the size of a shirt button rather than yellow dust. Catch a flowering field in season anywhere from the Nile Delta to central Europe and the scent alone, honeyed and green with a note of cut apple, explains the drink’s long run through recorded medicine better than any lab paper.
Chamomile Tea Benefits: What the Evidence Says
The plainest summary comes from the National Center for Complementary and Integrative Health: studies of chamomile for specific conditions have not produced enough reliable evidence to rate its clinical usefulness. That does not mean nothing works. It means each claim deserves grading rather than repeating, the same approach we took with green tea benefits. Here is where the research stands.
| Claimed benefit | What the research shows | Evidence strength |
|---|---|---|
| Better sleep quality | A 2024 systematic review and meta-analysis pooling ten clinical trials with 772 participants found significantly improved scores on the Pittsburgh Sleep Quality Index; sleep duration, sleep efficiency and daytime functioning did not improve. | Moderate, for perceived quality only |
| Treating insomnia | NCCIH notes very little research; a placebo-controlled pilot in adults with chronic primary insomnia found no significant difference in sleep-diary measures versus placebo. | Weak |
| Reducing anxiety | A 2019 meta-analysis of twelve randomized trials reported improvement in generalized anxiety disorder after two to four weeks of chamomile extract; a 38-week relapse-prevention trial using 1,500 mg daily saw longer time to relapse (11.4 vs 6.3 weeks) that did not reach statistical significance. | Promising but preliminary |
| Settling digestion | Traditional use on several continents; NCCIH finds benefit only from multi-herb blends for colic and diarrhea in children, not from chamomile alone. | Traditional, thin trial evidence |
| Mouth soreness during cancer treatment | Small studies suggest chamomile mouthwash may prevent or ease mouth irritation from radiation therapy or chemotherapy. | Early, small studies |
Two details keep that table honest. First, nearly all of the positive trials used concentrated chamomile extracts, commonly 220 to 1,500 mg of standardized extract per day in capsule form, rather than the one to two grams of loose flowers a cup of tea infuses, and only partially extracts, in a few minutes of steeping. A nightly cup sits at the gentle end of the doses that showed effects. Second, the sleep finding is about perceived quality: participants in the pooled trials rated their sleep as better, while objective measures such as total sleep time and sleep efficiency mostly did not move.
None of this makes the evening ritual pointless. A warm, caffeine-free, faintly sweet drink an hour before bed is a sensible wind-down cue before any pharmacology enters the picture, and chamomile remains one of the better-tolerated herbs in the trial literature; the 38-week anxiety trial reported no serious adverse effects over months of daily use.
Side Effects and Who Should Be Careful
NCCIH rates chamomile as likely safe in the amounts found in teas and foods. Three groups, however, have real reasons for caution.
Ragweed and daisy-family allergies
Chamomile is an Asteraceae plant, the family that includes ragweed, chrysanthemums, marigolds and daisies, and people allergic to those plants are the most likely to react to chamomile. Most reactions are mild, but the record includes severe ones: published case reports describe anaphylaxis developing within an hour of drinking chamomile tea. An itchy mouth or throat after a cup is a stop signal, not a curiosity.
Medication interactions
The most serious documented case involves warfarin: a published report describes a 70-year-old woman on the blood thinner who was hospitalized with multiple internal hemorrhages after using chamomile tea and a chamomile lotion at the same time. Chamomile contains coumarin-related compounds, so the interaction is considered plausible rather than proven, but nobody on anticoagulants should add daily chamomile without a physician’s sign-off. Interactions have also been reported with cyclosporine and with some drugs metabolized by the liver, and chamomile may add to the drowsiness of sedative medications. Preliminary research suggests mild estrogen-like activity, so NCCIH advises caution with birth control pills and estrogen-sensitive conditions.
Pregnancy and breastfeeding
Little is known about chamomile’s safety during pregnancy or while breastfeeding; the studies simply have not been done. The standard advice is to clear regular chamomile with your obstetric provider rather than assume an herbal drink is automatically fine. The same conversation is worth having about any herb this article covers: this is general information, not medical advice.
How to Brew Chamomile Tea
Chamomile is among the most forgiving plants you can put in a teapot, but four parameters separate a golden, honeyed cup from a flat one.
- Dose: one to two teaspoons of whole dried flowers (about 1 to 2 g) per 240 ml cup. Whole flowers are airy and light for their volume, so err toward the generous scoop.
- Water: just off the boil, roughly 93 to 100 C. The flowers take full-temperature water well, and pulling the kettle a few degrees early helps preserve the volatile aromatics.
- Time: four to five minutes for a standard cup, up to seven for a deeper, more honeyed infusion. Chamomile stays far gentler than oversteeped black tea, so the penalty for forgetting the timer is small.
- Cover the cup: the calming aromatics are volatile oils that leave with the steam. A lid or saucer over the cup condenses them back into the liquid, and it is the single most overlooked step in herbal brewing.
The result should be a clear, pale-gold liquor with a scent between apple, honey and fresh hay. A spoon of honey suits it; milk does not. If your evening blend mixes chamomile with lavender or mint, brew it the same way and expect the added herbs, not the chamomile, to dominate the nose.
How to Buy and Store Chamomile
The chamomile aisle divides into whole flowers and everything else. Standard teabags mostly contain crushed fragments and flower dust, which surrender their essential oils during processing and storage; whole dried flower heads keep theirs sealed in until steeping. Look for intact heads with visible cream-white petals and yellow centers, and a clear sweet-apple scent the moment the bag opens. Faded, gray-beige flowers with little aroma are past their best. Egyptian whole flower grades are the benchmark many specialty merchants list by name.
Dried flowers fade faster than dense tea leaf, so buy amounts you will finish within a year and keep them in an airtight, opaque container away from light, heat and the competing aromas of the spice shelf. The full playbook, including which containers earn their price, is in our guide to how to store tea.
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Frequently Asked Questions
Does chamomile tea really help you sleep?
Chamomile modestly improves how well people feel they sleep: a 2024 meta-analysis of ten trials found better subjective sleep quality scores. It is not a proven insomnia treatment, though, and the strongest results come from concentrated extracts rather than tea. A calming evening cup is reasonable; expecting a sedative is not.
Who should avoid chamomile tea?
Anyone allergic to ragweed, daisies, chrysanthemums or marigolds should avoid chamomile, because it belongs to the same plant family and reactions up to anaphylaxis are documented. People taking warfarin, sedatives or hormonal contraceptives, and anyone pregnant or breastfeeding, should ask a doctor before drinking it regularly.
Does chamomile tea have caffeine?
Chamomile tea contains no caffeine at all. It is an infusion of dried flowers, not a product of the Camellia sinensis tea plant, so there is nothing to decaffeinate and no stimulant effect at any brewing strength. That makes it one of the standard evening alternatives to true tea and coffee.
What is the difference between German and Roman chamomile?
German chamomile (Matricaria chamomilla) is the upright annual used in nearly all commercial teas, with a honeyed, apple-like flavor. Roman chamomile (Chamaemelum nobile) is a low-growing perennial with thicker leaves and a fruitier, more bitter cup, harvested mainly for essential oil. Teabags labeled simply chamomile almost always contain the German species.
How long should chamomile tea steep?
Steep whole chamomile flowers for four to five minutes in water just off the boil, with the cup or pot covered so the volatile oils condense back into the liquid instead of escaping with the steam. Chamomile stays far gentler than true tea when oversteeped, so an extra minute deepens the flavor without harsh bitterness.