Chamomile tea is one of the most widely consumed herbal teas in the world, and for good reason. It has measurable effects on sleep, anxiety, blood sugar, menstrual pain, and skin healing, backed by clinical trials rather than just folk tradition. The key compound behind many of these benefits is a flavonoid called apigenin, which binds to receptors in the brain that promote calm and drowsiness.
Sleep and Relaxation
The most popular reason people reach for chamomile tea is to wind down before bed, and the science supports the habit. Apigenin, the primary active flavonoid in chamomile, activates GABA receptors in the brain. These are the same receptors targeted by prescription sleep and anxiety medications, though apigenin works through a slightly different pathway. In animal studies, apigenin produced sedative effects independent of the specific receptor site that drugs like benzodiazepines use, suggesting a gentler mechanism.
Beyond calming the nervous system directly, apigenin also appears to lower levels of the stress hormone corticosterone (the animal equivalent of cortisol) while boosting serotonin in the brain. This combination helps explain why chamomile doesn’t just make you sleepy but also helps quiet the mental chatter that keeps people awake. That said, researchers note that while the link between apigenin and sleep-related brain chemistry is strong, much of the detailed mechanistic work has been done in animals, not humans.
Anxiety Relief
Chamomile’s calming effects extend well beyond bedtime. A randomized clinical trial tested chamomile extract (1,500 mg daily, split into three doses) in people diagnosed with generalized anxiety disorder. After an initial treatment phase, participants who continued taking chamomile maintained significantly lower anxiety symptoms compared to those switched to a placebo. The difference was statistically significant.
The relapse numbers are particularly telling. Among those who switched to placebo, about 25.5% experienced a return of anxiety symptoms. In the group that kept taking chamomile, only 15.2% relapsed. People on chamomile also took nearly twice as long to relapse when it did occur: an average of 11.4 weeks compared to 6.3 weeks for placebo. While the study used concentrated capsules rather than brewed tea, the active compounds are the same. A few cups of strong chamomile tea daily delivers a meaningful dose of those same flavonoids, though likely at lower concentrations than a standardized supplement.
Blood Sugar Management
If you have type 2 diabetes or are watching your blood sugar, chamomile tea may offer a modest assist. A clinical trial of 64 people with type 2 diabetes found that drinking chamomile tea three times per day immediately after meals for eight weeks significantly improved several markers of blood sugar control. Participants who drank the tea (brewed from 3 grams of chamomile per cup) saw reductions in their long-term blood sugar marker (HbA1c), fasting insulin levels, and insulin resistance scores compared to the control group, which drank water instead.
The tea also improved antioxidant status while lowering a marker of oxidative stress, a type of cellular damage that tends to be elevated in people with diabetes and contributes to complications over time. These are meaningful changes from something as simple as a cup of tea after each meal.
Menstrual Pain and Bleeding
Chamomile has a long history as a remedy for menstrual cramps, and a systematic review of seven clinical trials covering over 1,000 women confirms it holds up under scrutiny. Menstrual cramps happen when the uterine lining overproduces compounds called prostaglandins, which trigger contractions and inflammation. Chamomile works by blocking the production of both prostaglandins and leukotrienes, two classes of inflammatory molecules responsible for the pain.
The reviewed studies found chamomile effective not only for reducing pain severity but also for decreasing menstrual bleeding volume. This makes it a practical option for people who experience heavy, painful periods and want something they can add alongside their usual pain relief strategy.
Skin Healing and Inflammation
Chamomile isn’t limited to what you drink. Applied topically, its essential oils contain compounds with anti-inflammatory, antibacterial, and antifungal properties. In wound-healing research, topical chamomile accelerated the healing of burn wounds by stimulating the growth of new skin cells, supporting the cells that build connective tissue, and increasing collagen production.
When taken orally, chamomile extract also reduced wound size and inflammation in studies, suggesting the skin benefits work from both directions. The key active compounds here are chamazulene (which gives chamomile oil its distinctive blue tint) and bisabolol, which together account for the bulk of the oil’s therapeutic effects. This is why chamomile shows up in so many skincare products, though a simple compress soaked in strong chamomile tea has been used for centuries on irritated skin and minor wounds.
German vs. Roman Chamomile
Most chamomile tea on store shelves is German chamomile, and that matters. While both German and Roman chamomile contain chamazulene and bisabolol, the concentrations differ significantly. Bisabolol, one of the most potent anti-inflammatory compounds in chamomile, makes up about 50% of German chamomile’s essential oil. Both varieties share the characteristic blue oil from chamazulene (roughly 5% of the essential oil in each), but German chamomile’s higher bisabolol content gives it a stronger therapeutic profile overall. If you’re drinking chamomile specifically for health benefits, German chamomile is the better choice.
How to Brew for Maximum Benefit
Brewing method actually affects how much of the beneficial compounds end up in your cup. The ideal approach is water heated to about 200°F (93°C), just below a full boil, steeped for 5 to 10 minutes. Five minutes extracts a solid amount of flavonoids and essential oils. Pushing to 10 minutes increases the intensity of both flavor and active compounds, though it also makes the tea more bitter. If you’re drinking chamomile primarily for its health effects rather than taste, longer steeping is worth it. Cover the cup while steeping to keep the volatile oils from escaping with the steam.
Safety and Interactions
Chamomile is safe for most people at normal tea-drinking amounts. The most notable caution is for anyone taking blood-thinning medications like warfarin. Chamomile contains compounds that can interact with these drugs, classified as a minor interaction but still worth knowing about if you’re on anticoagulant therapy. People with allergies to plants in the daisy family (ragweed, chrysanthemums, marigolds) may also react to chamomile, since they’re botanical relatives. Pregnant women are generally advised to limit chamomile intake, as some of its compounds can stimulate uterine contractions at high doses.