Quick Answer: Chamomile tea offers a broad range of evidence-based benefits: it promotes sleep via apigenin's GABA receptor action, reduces anxiety, eases digestive discomfort, has anti-inflammatory properties, and may support blood sugar regulation. Of all herbal teas, chamomile has one of the most extensive bodies of clinical research behind it.
In This Guide
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Chamomile is one of the world's most consumed herbal teas, and its popularity is not based solely on tradition. Decades of research -- including cell culture studies, animal studies, and human clinical trials -- have identified a substantial array of health benefits associated with chamomile consumption. This guide covers all of them with appropriate context for each.
Sleep Benefits
The most researched and best-documented benefit of chamomile is its effect on sleep. The mechanism centres on apigenin, a flavonoid that binds to benzodiazepine sites on GABA-A receptors in the brain. By partially activating these inhibitory receptors, apigenin reduces neuronal excitability, lowers anxiety, and promotes physiological conditions conducive to sleep onset.
A 2017 randomised controlled trial by Adib-Hajbaghery and Mousavi found that elderly patients taking chamomile extract showed significantly improved scores on the Pittsburgh Sleep Quality Index compared to placebo over four weeks. A 2019 systematic review by Hieu et al. confirmed chamomile's anxiolytic and mild sedative effects across multiple studies.
Practical implications: chamomile is most effective for sleep when consumed 30 to 45 minutes before bed, consistently, as part of a wind-down routine. It is particularly well-suited to people whose sleep difficulties are driven by anxiety and mental arousal.
Anxiety and Stress Reduction
Chamomile's anti-anxiety benefits are strongly supported by clinical evidence. A landmark trial by Amsterdam et al. (2009) published in the Journal of Clinical Psychopharmacology assessed chamomile extract in patients with mild to moderate generalised anxiety disorder (GAD). The chamomile group showed statistically significant reductions in Hamilton Anxiety Scale (HAM-A) scores compared to placebo, with a good safety profile and no serious adverse events.
A follow-up long-term study (Amsterdam et al., 2016) investigated chamomile's effectiveness in preventing relapse of GAD symptoms after initial response. Patients who continued chamomile had significantly lower relapse rates than those who switched to placebo, suggesting the herb's anxiolytic effects persist with sustained use.
Anxiety and Sleep: A Bidirectional Relationship
Anxiety causes sleep problems, and poor sleep worsens anxiety. Chamomile's dual benefit -- reducing anxiety and improving sleep -- means it addresses this cycle from both directions simultaneously. This is one reason it produces more noticeable benefits for people with anxiety-driven insomnia than for those whose sleep difficulties have other causes.
Digestive Benefits
Chamomile has a long history of use for digestive complaints, and modern research provides some scientific support for these uses. Chamomile's anti-spasmodic properties -- derived from compounds including apigenin and bisabolol -- help relax smooth muscle in the gastrointestinal tract, which can reduce cramping, bloating, and bowel urgency.
Specific digestive applications with research support include:
- Irritable bowel syndrome (IBS): Some evidence supports chamomile's antispasmodic effect reducing cramping and discomfort in IBS
- Functional dyspepsia: Chamomile is included in several European phytomedicine formulations for stomach discomfort, with clinical evidence supporting its use
- Infantile colic: A small trial found chamomile tea reduced crying episodes in colicky infants compared to placebo, though use in infants should always be discussed with a paediatrician
- General bloating and gas: Carminative properties help reduce gas accumulation in the digestive tract
A cup of chamomile tea after meals is a well-established traditional use with a plausible scientific basis. For people whose poor sleep is partly related to digestive discomfort, this dual benefit is particularly relevant. For the viral end of the bedtime-drink spectrum, see what the research actually says about lettuce water.
Anti-Inflammatory Properties
Chamomile contains several compounds with documented anti-inflammatory activity, including chamazulene (formed during the distillation of chamomile essential oil from the precursor matricine), alpha-bisabolol, and apigenin itself. These compounds inhibit inflammatory pathways including COX-2 (cyclo-oxygenase 2), the same target as many over-the-counter anti-inflammatory pain medications.
This anti-inflammatory action has implications for:
- Sore throat and mouth sores (chamomile mouthwash or gargled tea)
- Skin irritation and eczema (topical chamomile preparations)
- Systemic low-grade inflammation associated with stress and poor sleep
- Wound healing support (historically, chamomile poultices were applied to skin injuries)
Anti-Inflammatory and Sleep: Another Connection
Systemic inflammation is bidirectionally linked with poor sleep -- inflammation disrupts sleep, and poor sleep promotes inflammation. Chamomile's anti-inflammatory properties may therefore contribute to better sleep quality indirectly, alongside its direct GABA-mediated sedative effect.
Blood Sugar Regulation
Animal studies and limited human research suggest chamomile may have mild blood-glucose-lowering properties. The proposed mechanism involves inhibition of the enzyme aldose reductase, which is implicated in diabetic complications, and possible effects on insulin secretion.
A small 2015 clinical trial published in the Journal of Endocrinological Investigation found that type 2 diabetic patients who consumed chamomile tea three times daily for eight weeks showed reductions in fasting blood glucose, HbA1c (long-term blood sugar marker), insulin resistance, and serum lipids compared to control.
These findings are preliminary and should not lead anyone to replace diabetes medication with chamomile tea. However, for people at risk of blood sugar dysregulation, the data is intriguing and suggests chamomile may offer metabolic benefits beyond its well-established sleep and anxiety effects.
Skin and Wound Healing
Topical chamomile -- in creams, compresses, and poultices -- has been used for centuries to soothe irritated skin. Modern research supports its use for:
- Eczema (atopic dermatitis): A comparative trial found chamomile cream was 60% as effective as a mild hydrocortisone cream for eczema symptom relief, making it a useful complementary option
- Wound healing: Alpha-bisabolol and chamazulene promote epithelial tissue regeneration and reduce inflammation at wound sites
- Sunburn soothing: Cool chamomile tea compresses have anti-inflammatory effects on heat-damaged skin
Safety Profile and Contraindications
Chamomile has an excellent safety profile for most people when consumed as brewed tea. Key considerations:
- Ragweed and Asteraceae allergy: People with ragweed allergy may experience cross-reactive allergic reactions
- Pregnancy: Avoid regular chamomile tea during pregnancy due to theoretical uterine-stimulating effects; consult your obstetrician
- Blood thinners (warfarin): Chamomile contains coumarin compounds that may potentiate anticoagulants; discuss with your pharmacist
- Diabetes medication: Chamomile's blood sugar effects may interact with hypoglycaemic medications; monitor blood sugar
Dorothy's Summary
"Chamomile is one of the few herbal teas where I feel comfortable saying it has real, documented benefits across multiple body systems -- not just sleep. For most of our customers, adding a cup or two daily is a low-risk, potentially multi-benefit change."
-- Dorothy, Sleep Specialist, Mattress Miracle Brantford
Holistic Sleep Support in Brantford
At Mattress Miracle, we take a whole-person approach to sleep health. Chamomile tea can be one part of a broader sleep improvement strategy that includes a supportive mattress, good sleep hygiene, and consistent routines.
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Call 519-770-0001Frequently Asked Questions
How many cups of chamomile tea per day is safe?
One to three cups per day is generally considered safe for healthy adults. Most clinical studies have used one to three cups or equivalent extract doses. Excessive consumption (more than five cups daily) is not recommended and has not been studied.
Does chamomile tea have any side effects?
For most people, chamomile tea has minimal side effects. The most common potential issues are allergic reactions in people with Asteraceae family plant allergies, and possible interaction with blood-thinning medications. Nausea is occasionally reported with large doses.
What is the best time of day to drink chamomile tea?
For sleep benefits: 30 to 45 minutes before bed. For digestive benefits: after meals. For general anxiety management: as needed throughout the day, though afternoon and evening are most common. Chamomile is caffeine-free, so it can safely be consumed at any time.
Is chamomile tea good for digestion and sleep together?
Yes -- this is one of chamomile's most practical dual benefits. People who experience digestive discomfort that disrupts sleep (bloating, cramping) may find chamomile addresses both the digestive symptoms and the sleep difficulty simultaneously.
Sources
- Adib-Hajbaghery, M., & Mousavi, S. N. (2017). The effects of chamomile extract on sleep quality among elderly people: A clinical trial. Complementary Therapies in Medicine, 35, 109-114.
- Amsterdam, J. D., Li, Y., Soeller, I., Rockwell, K., Mao, J. J., & Shults, J. (2009). A randomized, double-blind, placebo-controlled trial of oral Matricaria recutita (chamomile) extract therapy for generalized anxiety disorder. Journal of Clinical Psychopharmacology, 29(4), 378-382.
- Hieu, T. H., Dibas, M., Surber, C., & Tran, L. (2019). Therapeutic efficacy and safety of chamomile for state anxiety, generalised anxiety disorder, insomnia, and sleep quality: A systematic review and meta-analysis. Burns and Trauma, 7, 46.
- Srivastava, J. K., Shankar, E., & Gupta, S. (2010). Chamomile: A herbal medicine of the past with bright future. Molecular Medicine Reports, 3(6), 895-901.
- Zemestani, M., Rafraf, M., & Asghari-Jafarabadi, M. (2016). Chamomile tea improves glycaemic indices and antioxidants status in patients with type 2 diabetes mellitus. Nutrition, 32(1), 66-72.
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