Chamomile: Uses, Benefits, Dosage & Safety
Last updated: June 2026 · Reviewed by the FactoWiki Editorial Team for clarity and source accuracy
Quick summary
Chamomile is a traditional calming herb that, unusually for a folk remedy, has some genuine clinical-trial support — for generalized anxiety disorder and for sleep quality. The effects are modest and the trials fairly small, but it is well tolerated, with the main caution being for people allergic to ragweed and related plants.
What is Chamomile?
Chamomile is a daisy-like flower, with German chamomile (Matricaria chamomilla, also called Matricaria recutita) being the type most used in supplements and teas. It has been used for centuries as a calming and digestive remedy. Its activity is usually attributed to flavonoid compounds, especially apigenin, which can bind to receptors in the brain involved in relaxation. It is taken as a tea, a liquid extract or standardised capsules.
What Chamomile is commonly used for
In supplements, Chamomile is taken mainly for anxiety and relaxation and for sleep, and it appears in brain & memory calm-and-sleep formulas as well as digestive blends. It is used as gentle, supportive care; for diagnosed anxiety or persistent insomnia it is best seen as a complement to, not a replacement for, proper assessment and treatment.
How Chamomile works
Chamomile's calming effects are linked mainly to apigenin, a flavonoid that binds to benzodiazepine and GABA receptors in the brain — the same broad system targeted, far more strongly, by anti-anxiety and sleep medications. This gentle activity may explain its mild anxiety- and sleep-related effects without the strong sedation or dependence of those drugs. It also contains compounds with anti-inflammatory and antispasmodic actions, which underlie its traditional use for digestion.
What the evidence says
Here's an honest snapshot of what published research suggests about Chamomile — including where the evidence is limited.
- A randomised, double-blind, placebo-controlled trial found that chamomile extract significantly reduced symptoms of mild-to-moderate generalized anxiety disorder compared with placebo. (PubMed)
- A systematic review and meta-analysis of randomised trials reported that chamomile improved measures of anxiety and sleep quality, while noting the modest size and number of studies. (PubMed)
- General background on chamomile and its traditional uses is summarised by reputable health references. (MedlinePlus)
Typical dosage used in studies
Anxiety trials have used standardised chamomile extract around 1,100–1,500 mg per day (often standardised to apigenin). Tea is much weaker than concentrated extracts. Effects on anxiety build over weeks rather than instantly. This is general information from research, not a personal recommendation.
Side effects and safety
Chamomile is generally very well tolerated, with mild drowsiness being the most common effect. The main safety issue is allergy: chamomile is in the daisy (Asteraceae) family, so people allergic to ragweed, chrysanthemums or related plants can react to it, occasionally severely.
Medication interactions and who should avoid Chamomile
Medication & safety check
Chamomile may add to the effect of sedatives and sleep medications, increasing drowsiness. In large or concentrated amounts it may have mild blood-thinning effects and could add to anticoagulant drugs such as warfarin. It can also affect liver enzymes that process some medications. People who are pregnant should be cautious, and anyone on medication should check before using concentrated extracts.
This is general information, not personal medical advice. If you take any medication, confirm it's safe to combine with Chamomile with your doctor or pharmacist first.
Sources & further reading
The evidence summary above is drawn from these sources. For general, authoritative background you can also consult:
- PubMed-indexed study (PMID 19593179)
- PubMed-indexed study (PMID 31006899)
- MedlinePlus
- NIH Office of Dietary Supplements
- NIH National Center for Complementary and Integrative Health
Frequently asked questions
Does chamomile actually help anxiety?
Yes, modestly. Randomised trials show standardised chamomile extract can reduce symptoms of mild-to-moderate generalized anxiety disorder more than placebo. It is gentle, so the effect is smaller than prescription treatment.
Does chamomile help you sleep?
Some trials and a meta-analysis suggest chamomile can improve sleep quality, particularly in people with poor sleep. The evidence is encouraging but the studies are relatively small.
Is chamomile tea as effective as capsules?
Tea is much weaker and more variable than the standardised extracts (around 1,100–1,500 mg) used in anxiety trials. Tea may still be soothing, but it is not the same as the doses studied.
Who should avoid chamomile?
People allergic to ragweed, daisies, chrysanthemums or marigolds may react to chamomile. It can also add to sedatives and blood thinners, so check first if you take those.
How long does it take to work?
For anxiety, benefits in trials build over a few weeks of regular use rather than from a single dose. For occasional relaxation, a cup of tea may feel soothing sooner.
Where you'll find Chamomile
On FactoWiki, Chamomile most often appears in Brain & Memory Support formulas. Browse those categories to see the products we review, each with a full breakdown of its formula, pricing and safety. See the full supplement guides index.
Related ingredients to explore
Ingredients often studied or formulated alongside Chamomile — useful for understanding the full picture of a formula.