Chamomile: Sleep Aid, Anxiolytic, Or Bedtime Tea Ritual?

← Back to articles

Chamomile (Matricaria chamomilla) has been used for sleep and anxiety for at least three millennia. The modern evidence is real but smaller than the marketing suggests. Chamomile works — mildly — and for the right person and the right indication, mildly is enough.

Anxiety

A double-blind RCT in 57 outpatients with mild-to-moderate generalised anxiety disorder showed that an oral chamomile extract titrated to 1,100 mg/day produced a significantly greater reduction in HAM-A anxiety scores than placebo over 8 weeks, with response and remission rates roughly comparable to low-dose anxiolytics (Amsterdam 2009; PMID 19593179). A larger long-term-management trial in 179 GAD patients used chamomile 1,500 mg/day for 12 weeks of open-label treatment followed by a randomised continuation phase. While long-term continuation didn't significantly delay relapse versus placebo, anxiety scores remained substantially below baseline (Mao 2016, Phytomedicine).

Sleep quality

Smaller RCTs in adults with insomnia, postpartum mothers, and elderly residents have shown modest improvements in subjective sleep quality, sleep latency (around 10–15 minutes faster sleep onset in some trials), and daytime functioning. The tea form, with 2–3 g of dried flowers per cup, delivers a smaller active dose than the standardised capsule extracts used in anxiety trials, and probably works as much through ritual and behavioural activation as pharmacology.

Active compounds

Apigenin, a flavonoid concentrated in chamomile, binds weakly to the benzodiazepine site of the GABA-A receptor in animal studies and accounts for most of chamomile's anxiolytic and mild sedative effect. Chamomile also contains bisabolol and matricin (precursor to chamazulene) with anti-inflammatory effects relevant to GI use. Standardised extracts often specify apigenin content (typically 1.2%).

Safety caveats

Chamomile is in the Asteraceae family. People with severe ragweed, chrysanthemum, or daisy allergies can cross-react, occasionally with anaphylaxis. Chamomile has mild anti-platelet and anticoagulant activity; use caution with warfarin, DOACs, and antiplatelet drugs and stop 1–2 weeks before elective surgery. Pregnancy data are limited; tea-strength is widely consumed but higher-dose extracts should be avoided during pregnancy.

Practical use

For anxiety: 200–1,500 mg/day of a standardised extract, with the upper end matching the trial evidence. For sleep: a cup of strong chamomile tea 30–60 minutes before bed fits well as part of a sleep-hygiene routine rather than as an isolated drug. For mild post-prandial GI upset: traditional after-meal use has modest supporting evidence (Srivastava 2010 review).