Skip to main content
SupplementScience
Chamomile supplement
Botanical Extract

Chamomile: Benefits, Dosage, Forms & Research

Botanical Extract

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

TL;DR — Quick Answer

Chamomile is clinically validated for generalized anxiety disorder, with an 8-week RCT showing significant symptom reduction. Its active compound apigenin binds GABA-A receptors. A long-term study showed chamomile reduced anxiety relapse rates over 38 weeks. Safe, gentle, and effective for mild anxiety and sleep.

Key Facts

What it is
A botanical extract from Matricaria chamomilla containing the flavonoid apigenin, which binds GABA-A receptors
Primary benefits
  • Reduces GAD symptoms in 8-week RCT (Amsterdam 2009)
  • Long-term anxiety relapse prevention (Mao 2016)
  • Mild sedative effects for sleep support
  • Apigenin binds GABA-A benzodiazepine receptors
  • Anti-inflammatory and digestive benefits
Typical dosage
220-500mg standardized extract daily
Evidence level
Moderate
Safety profile
Generally Safe

What the Research Says

Chamomile has some of the strongest evidence among herbal anxiolytics for generalized anxiety disorder. Amsterdam et al. (2009) established chamomile's efficacy in an 8-week RCT, finding significant reductions in HAM-A scores compared to placebo. Mao et al. (2016) provided rare long-term data, showing chamomile maintained anxiolytic effects over 38 weeks and reduced relapse rates. Amsterdam et al. (2012) further demonstrated antidepressant activity alongside anxiolytic effects. The mechanism is primarily mediated by apigenin binding to the benzodiazepine site on GABA-A receptors (Avallone et al., 2000), with additional contributions from anti-inflammatory effects on neuroinflammation.

Benefits of Chamomile

  • Generalized anxiety disorder — Amsterdam et al. (2009) conducted an 8-week RCT of 57 patients with mild-to-moderate GAD, finding 220mg chamomile extract (1.2% apigenin) produced significantly greater reduction in HAM-A anxiety scores compared to placebo
  • Long-term anxiety management — Mao et al. (2016) extended this work with a 38-week study showing continued chamomile use significantly reduced GAD relapse rates compared to placebo, with sustained low symptom severity during treatment
  • Sleep quality — chamomile tea or extract taken before bed provides mild sedation through apigenin-mediated GABA-A receptor activation, with a 2017 RCT by Adib-Hajbaghery & Mousavi in elderly nursing home residents showing significantly improved sleep quality
  • Anti-inflammatory effects — chamomile contains chamazulene and alpha-bisabolol, which inhibit COX-2 and reduce inflammatory cytokines, providing systemic anti-inflammatory benefits alongside its calming effects
  • Digestive comfort — chamomile relaxes smooth muscle in the GI tract, reducing stress-related digestive symptoms like bloating, cramping, and nausea
Did you know?

Chamomile has some of the strongest evidence among herbal anxiolytics for generalized anxiety disorder.

Forms of Chamomile

FormBioavailabilityBest For
Standardized Chamomile Extract (1.2% apigenin)ModerateAnxiety support — the exact standardization used in Amsterdam and Mao clinical trials
Chamomile Tea (Dried Flowers)LowMild relaxation and bedtime ritual — traditional form, lower apigenin content than extract
Chamomile Essential Oil (Topical/Aromatherapy)Low (inhalation/topical)Aromatherapy relaxation — not for internal use, provides mild calming through olfactory pathways

Dosage Recommendations

General recommendation: 220-500mg standardized chamomile extract (1.2% apigenin) daily

Timing: For anxiety: divided doses morning and evening. For sleep: 30-60 minutes before bed.

Dosage by Condition

ConditionRecommended DoseEvidence
Generalized anxiety disorder220-500mg standardized extract dailyModerate
Sleep support200-400mg extract or 1-2 cups tea before bedModerate
Digestive comfort1-2 cups chamomile tea after mealsEmerging

Upper limit: 1,500mg extract/day (the Mao 2016 study used up to 1,500mg daily without adverse effects)

Side Effects and Safety

Safety profile: Generally Safe

Potential Side Effects

  • Very well tolerated — one of the safest herbal supplements
  • Allergic reactions in people allergic to ragweed, chrysanthemums, or other Asteraceae family plants
  • Mild drowsiness (usually desirable)
  • Nausea at high doses (rare)
  • Contact dermatitis from topical use (rare)

Drug & Supplement Interactions

  • Anticoagulants (warfarin) — chamomile contains coumarin derivatives that may increase bleeding risk
  • CYP1A2 substrates — chamomile may inhibit CYP1A2, affecting caffeine and some medication metabolism
  • Sedative medications — mild additive effects
  • Iron supplements — tannins in chamomile tea may reduce iron absorption; separate by 2 hours
  • Cyclosporine — chamomile may alter cyclosporine levels
Check Chamomile interactions with other supplements →
BenefitsDosage GuideSide EffectsTypes & FormsResearchFAQ

Related Conditions

StressSleep Quality

Related Supplements

ApigeninPassionflowerLemon Balm

Frequently Asked Questions

Is chamomile tea enough, or do I need an extract?

For mild relaxation and sleep support, chamomile tea can be helpful — the bedtime ritual itself contributes to sleep hygiene. However, a typical cup of chamomile tea contains only about 3-10mg of apigenin, while clinical studies used standardized extracts providing 2.6-6mg of apigenin in a more concentrated form. For clinically meaningful anxiety reduction, a standardized extract (220-500mg, 1.2% apigenin) is more reliable than tea alone.

Can I take chamomile if I am allergic to ragweed?

Use caution — chamomile belongs to the Asteraceae (daisy) family, which also includes ragweed. Cross-reactivity is possible, though not universal. If you have severe ragweed allergies, start with a very small dose and monitor for allergic reactions. Some people with ragweed allergies tolerate chamomile well, while others experience sneezing, rash, or in rare cases anaphylaxis.

How does chamomile compare to prescription anti-anxiety medications?

Chamomile is milder than prescription anxiolytics like benzodiazepines or SSRIs. The Amsterdam 2009 RCT showed significant benefits for mild-to-moderate GAD, but chamomile has not been tested head-to-head against standard medications. Its advantages include safety, no dependence risk, and fewer side effects. It is best suited for mild anxiety or as an adjunct to conventional treatment, not as a replacement for medication in moderate-to-severe anxiety disorders.

References

  1. (). A randomized, double-blind, placebo-controlled trial of oral Matricaria recutita (chamomile) extract therapy for generalized anxiety disorder. Journal of Clinical Psychopharmacology. DOI
  2. (). Long-term chamomile (Matricaria chamomilla L.) treatment for generalized anxiety disorder: A randomized clinical trial. Phytomedicine. DOI
  3. (). The effects of chamomile extract on sleep quality among elderly people: A clinical trial. Complementary Therapies in Medicine. DOI
  4. (). Chamomile (Matricaria recutita) may provide antidepressant activity in anxious, depressed humans: an exploratory study. Alternative Therapies in Health and Medicine.