Chamomile tea is best known for promoting relaxation and sleep, but it also has measurable benefits for anxiety, digestive comfort, blood sugar management, and skin healing. Most of these effects trace back to a handful of plant compounds, especially one called apigenin, that interact with the same brain receptors targeted by anti-anxiety medications.
How Chamomile Works in Your Body
The key compound in chamomile, apigenin, binds to the same receptor sites in the brain that benzodiazepine medications (like Valium) attach to. Lab studies using radioligand binding assays confirmed that apigenin displaces molecules from these receptor sites, which helps explain chamomile’s calming reputation. The effect is milder than a pharmaceutical sedative, but it follows the same basic pathway: apigenin influences the brain’s GABA system, the network responsible for dialing down nerve activity and promoting a sense of calm.
Beyond the brain, apigenin is also the strongest antispasmodic agent among the more than 20 flavonoids identified in chamomile. That means it helps relax smooth muscle tissue throughout the body, particularly in the digestive tract.
Sleep Quality
Chamomile won’t knock you out, but it does appear to improve how well you sleep. A systematic review and meta-analysis of randomized and quasi-randomized trials found a statistically significant improvement in sleep quality after chamomile use. The effect size was moderate, meaning people who drank chamomile tea or took chamomile extract consistently reported sleeping more restfully than those who didn’t.
That said, when researchers looked specifically at insomnia severity, the one randomized controlled trial that measured it found no significant reduction. The practical takeaway: chamomile is more useful for improving the overall quality of a decent night’s sleep than for treating a serious sleep disorder. If you’re lying awake for hours every night, chamomile tea alone probably isn’t the fix.
Anxiety Relief
A randomized, double-blind, placebo-controlled trial tested chamomile extract in people diagnosed with generalized anxiety disorder. Participants taking chamomile showed a significantly greater reduction in anxiety scores compared to those on placebo. The researchers described the effect as “modest anxiolytic activity” in people with mild to moderate anxiety.
This was the first controlled clinical trial of chamomile for generalized anxiety disorder, and the results were encouraging enough to warrant further study. For everyday stress and nervousness, a cup or two of chamomile tea is a reasonable, low-risk option. For clinical anxiety that disrupts your daily life, it’s better thought of as a complement to other approaches rather than a standalone treatment.
Digestive Comfort
Chamomile has been used for stomach problems for centuries, and the science supports this tradition. Its flavonoid compounds act as antispasmodics, meaning they relax the muscles lining your stomach and intestines. This can ease cramping, bloating, and the discomfort that comes with indigestion or irritable bowel symptoms. Chamomile also has anti-inflammatory properties in the gut, which may help with general digestive upset and diarrhea.
The same antispasmodic action makes chamomile helpful for menstrual cramps, since the uterus is also lined with smooth muscle. Parents have long used diluted chamomile preparations for infant colic, though you should check with a pediatrician before giving herbal teas to babies.
Blood Sugar and Cholesterol
In a controlled clinical trial of 64 people with type 2 diabetes, those who drank chamomile tea three times daily after meals for eight weeks saw meaningful improvements across several markers. Their HbA1c levels (a measure of long-term blood sugar control) decreased significantly. Insulin resistance also dropped, along with total cholesterol, triglycerides, and LDL (“bad”) cholesterol.
The dose in this study was straightforward: about 3 grams of chamomile steeped in 150 milliliters of hot water, roughly the amount in a standard tea bag brewed in a small cup. Three cups a day after meals was the regimen. These results don’t mean chamomile tea replaces diabetes medication, but for people already managing type 2 diabetes through diet and medication, it could be a useful addition.
Skin Healing
Chamomile isn’t just for drinking. Applied topically, it has anti-inflammatory and wound-healing properties that have held up in clinical testing. In a controlled study comparing chamomile compresses to 1% hydrocortisone ointment for skin lesions around colostomy sites, the chamomile group healed significantly faster: an average of about 9 days versus nearly 15 days for the hydrocortisone group. Pain and itching also resolved more quickly with chamomile.
This is a notable result because hydrocortisone is the standard over-the-counter treatment for skin inflammation. Chamomile compresses (made by soaking a cloth in strong chamomile tea) can be applied to irritated skin, minor rashes, or areas of mild eczema as a gentle alternative.
Who Should Be Careful With Chamomile
Chamomile belongs to the same plant family as ragweed, and cross-reactivity is well documented. If you’re allergic to ragweed, mugwort, or other plants in the daisy family, chamomile could trigger an allergic reaction. In rare cases, this can be severe. One published case described an anaphylactic reaction to chamomile tea in a patient previously sensitized to mugwort pollen, confirmed through immunological testing that showed cross-reactivity between chamomile and ragweed proteins.
People taking blood thinners like warfarin should also exercise caution. Chamomile contains natural coumarin compounds that may amplify anticoagulant effects. A case report published in the Canadian Medical Association Journal described a 70-year-old woman on warfarin who experienced multiple internal hemorrhages after regularly using chamomile tea and chamomile lotion. Her blood-clotting levels had risen to dangerous levels, likely because chamomile’s coumarin content worked in synergy with the medication. While this was the first documented case, the theoretical risk had been noted before, and it’s enough reason to avoid regular chamomile consumption if you’re on blood thinners.
Getting the Most From Your Cup
Most chamomile tea research uses German chamomile (Matricaria chamomilla or Matricaria recutita), which is the variety found in the vast majority of commercial tea bags. Roman chamomile (Chamaemelum nobile) is a different species with a somewhat different chemical profile and is less commonly studied. If you’re buying chamomile tea for its health benefits, check the label for “German chamomile” or simply “chamomile” without further specification, as that’s almost always the German variety.
For general relaxation and digestive benefits, one to three cups per day is the range used in most studies. Steep your tea for at least five minutes in freshly boiled water to extract a meaningful amount of the active flavonoids. Covering your cup while it steeps helps trap the volatile oils that would otherwise evaporate. The blood sugar study used three cups daily after meals, which is a reasonable upper limit for regular consumption. Chamomile tea is caffeine-free, so timing isn’t a concern, though drinking it 30 to 60 minutes before bed makes the most of its mild sedative qualities.