Why does a calming tea need decoding?
Most pages about calming teas cite studies of concentrated extracts or capsules. Of the 12 herbs in our index, only 3 have been tested as a tea in a controlled human trial, and those trials are small.
Labels rarely say how much of each herb is in a bag, and a few blends contain ingredients with real cautions, such as St John’s wort, licorice or melatonin. We read the manufacturers’ ingredient lists and connect each herb to what the evidence and official safety sources say.
What does a decoded tea look like?
Buddha Teas Calm Buddha Blend
Chamomile, Lavender, Passionflower, St John's wort
St John's wort: weakens many medicinesAvoid in pregnancySedating: avoid with alcohol or sedativesDaisy-family allergy riskTraditional Medicinals Nighty Night Extra
Lemon balm, Passionflower, Valerian root, Licorice root
Avoid in pregnancyLicorice: blood pressure & heart cautionSedating: avoid with alcohol or sedativesCelestial Seasonings Sleepytime Melatonin
Chamomile
Contains melatoninDaisy-family allergy riskCelestial Seasonings Sleepytime Classic
Chamomile, Linden flower
Daisy-family allergy risk
Which calming herbs have real evidence?
| Herb | Evidence | Traditional tea amount (EU) | Teas in index |
|---|---|---|---|
| Chamomile | Tested as tea | 1.5–4 g per 150 ml | 29 |
| Lemon balm | Extract trials only | 1.5–4.5 g per 150 ml | 7 |
| Lavender | Tested as tea | 1–2 g per 150 ml | 10 |
| Passionflower | Tested as tea | 1–2 g per 150 ml | 10 |
| Valerian root | Mixed results | 0.3–3 g per 150 ml | 4 |
| Linden flower | Traditional use only | 1.5 g per 150 ml | 7 |
| Hops | Extract trials only | 0.5–1 g per 150–200 ml | 2 |
| L-theanine (green tea) | Extract trials only | none listed | 0 |
| Ashwagandha | Extract trials only | none listed | 2 |
| Licorice root | Caution ingredient | none listed | 8 |
| St John's wort | Caution ingredient | none listed | 1 |
| Kava | Caution ingredient | none listed | 0 |
Guides
Which tea is best for sleep? What the evidence actually supports
Passionflower, chamomile, valerian or lavender? We compare bedtime teas by what was tested as tea, not as an extract, plus cautions and how to choose a box.
Chamomile tea for sleep: what the studies show
Does chamomile tea help you sleep? One small tea trial, mixed reviews, no EU sleep indication, and an allergy caution. Here's the evidence in plain English.
Tea for anxiety: what helps, what's hype, and when tea isn't enough
Chamomile, lemon balm, lavender, passionflower: which calming teas have anxiety evidence, what form was tested, the cautions, and when to get real help.
Tea or extract? Why most calming-tea studies didn't test tea
Many pages cite extract and capsule trials as proof a calming tea works. Here's how to tell the difference, and which herbs have actually been tested as tea.
Calming tea cautions: the ingredients worth checking
St John's wort, licorice, kava, valerian, melatonin and ragweed allergy: the calming-tea ingredients with real cautions, from official sources.