You pull into the drive after a long day and sit there with the engine off, because walking into the house feels like one more job. The jaw is tight, the shoulders are up by your ears, and the third coffee is still buzzing somewhere behind your eyes. It's the moment a herbal tea or a bottle of capsules starts to look like a rescue.
Some of them do help. Chamomile, taken every day for months, kept anxious people steadier than a dummy. Lemon balm has a better record for anxiety than its gentle reputation suggests. But the herb with the biggest numbers for stress has also been linked to liver damage, a popular calming root was pulled from sale in Germany for the same reason and then failed its largest test, and the famous bedtime classic barely registers for anxiety at all. The trick is telling the helpers from the hype.
What herbs can do for stress
Start with what's causing it. Short sleep, skipped meals, no daylight and a calendar with no gaps will beat any herb, and no herb changes any of them. A herb eases how stress feels for a while. That can take the edge off while you fix those things, and in a hard month that edge can be the difference between coping and not. Stuck in Survival Mode, linked below, goes into what long-term stress does to the body.
It also helps to know what kind of stress you're dealing with. The racing, always-on kind responds to calming herbs. The flat, worn-out, running-on-empty kind is where the so-called adaptogens come in. And some herbs that are sold for stress are better left on the shelf.
Herbs for a racing mind
Lemon balm. A lemony member of the mint family, gentle enough for a garden pot. Theophrastus was calling it "bee-leaf" around 300 BC, and bees were later thought never to leave a garden where it grew. When the evidence was pooled, lemon balm brought down anxiety scores clearly, and depression scores a little, with no serious side effects.
It held up under pressure too. Given it once before a stressful computer task, 18 volunteers rated themselves calmer afterwards than on a dummy, and a little less alert. Lab work points to one possible reason, since its rosmarinic acid slows the enzyme that breaks down GABA, the brain's main calming messenger, though a cup of tea hasn't been shown to do the same. It makes a soft, pleasant drink and an easy place to begin. comes as loose cut leaf, so a spoonful makes a pot. In a test tube, its extract can interfere with the signals that drive the thyroid, so check first before making it a daily habit if you have a thyroid condition.
Chamomile. The quiet achiever. It has been the bedtime cure for longer than any of us: when Peter Rabbit limps home from Mr McGregor's garden, his mother puts him to bed with a spoonful of chamomile tea, in a story Beatrix Potter first told in an 1893 letter to a five-year-old boy. People with generalised anxiety who did well on chamomile were then divided: half stayed on it and half were switched, without knowing, to a dummy. Over the following months, those who stayed on chamomile kept their anxiety symptoms clearly lower. They took a chamomile extract, and a strong daily tea is the gentler home version.
The calm may come partly from apigenin, a compound in the flowers that binds in the brain where Valium-type drugs do. It calmed mice in the lab without knocking them out, and in people that link is still unproven. The catch is patience. This is a herb for every day, over weeks, more than a cup in a crisis.
Loose flowers make a fuller brew, and a bag of lasts for months of evenings. Chamomile belongs to the daisy family and can cause allergic reactions, occasionally severe ones: one man needed hospital treatment for swelling of his lips, eyelids and throat within half an hour of a cup. Skip it if daisies, ragweed or chrysanthemums set off your allergies. It may also clash with warfarin: a 70-year-old woman on the drug was admitted to hospital with internal bleeding after using chamomile tea and lotion. That's a single case, so raise it with a qualified health professional if you take a blood thinner.
Lavender, in a capsule. A standardised lavender oil capsule made to be swallowed has some of the strongest evidence of any herb for anxiety, and it seemed to help low mood and sleep too. This is a specific, made-for-purpose product, such as , which uses that same lavender oil extract.
In a 10-week test, 539 adults with generalised anxiety took one of two strengths, the antidepressant paroxetine, or a dummy. Both strengths beat the dummy, while the drug only came close on the main measure. On the stronger capsule, 60 percent saw their anxiety score halve, against 43 percent on the drug and 38 percent on the dummy, and the capsules brought fewer side effects than the drug. The company that makes the extract helped run that test, so weigh it with that in mind. Oil from an aromatherapy bottle is a different thing and should never be swallowed.
Green tea and L-theanine. L-theanine is a calming amino acid found in tea leaves. Over four weeks, adults taking it reported less stress and better sleep, and did better on some thinking tests. It's part of why green tea feels gentler than coffee, though it still carries caffeine.
Passionflower and saffron. Both look promising for anxiety, and saffron has held its own against standard antidepressants for low mood with fewer side effects, but the evidence for either is still too thin to lean on.
Herbs for worn-out stress
Ashwagandha. The best-known adaptogen, and the best-supported one in its group. Its name is less glamorous than the marketing: it comes from the Sanskrit for "horse" and "smell", because the root smells like a horse. Pooled across 12 groups and just over 1,000 people, ashwagandha lowered both stress and anxiety compared with a dummy pill, though the review itself judged its certainty low. It helped sleep too: pooled across 400 people, ashwagandha extract improved sleep a little but clearly, more so in people with insomnia and after about two months, and they felt more alert on waking.
It has a serious side, though. It has been tied to rare liver injuries, especially in people who already had liver trouble: of 8 patients in one hospital series who became ill from ashwagandha alone, 5 already had liver disease, and 3 of them died. Stop at once if you notice itching, dark urine or yellowing skin or eyes.
Ashwagandha can also push thyroid hormone up: a 73-year-old woman who took it for two years for an underactive thyroid ended up with an overactive one and a racing heart, which settled once she stopped. Leave it alone in pregnancy, with any thyroid or hormone-sensitive condition, and if you're on thyroid medicine. Denmark went further and banned it from supplements in 2023 on the strength of a safety report that has since been disputed.
Rhodiola. A hardy golden root from cold mountain and Arctic regions. The evidence for it is a mixed bag: some groups found it eased mental fatigue, others found nothing, and almost every test of it had flaws. In a 12-week test with 57 people who had depression, rhodiola, the antidepressant sertraline and a dummy showed no clear difference, though side effects hit 30 percent on rhodiola against 63 percent on the drug and 17 percent on the dummy. Worth a try for the tired, wired kind of stress, with modest expectations.
Holy basil. A sacred plant in Indian homes and a lovely, clove-scented tea. The human tests on it lean favourable, but they're scattered across many conditions and say little about stress itself, so enjoy it as a tea and leave the big promises aside.
Herbs to skip or handle with care
Kava. The Pacific island root has a botanical name, Piper methysticum, that means roughly "intoxicating pepper", and chewing it numbs the mouth. It looked good in short tests, where pooled results had it easing anxiety better than a dummy. Then came the largest long test: 171 people with diagnosed generalised anxiety took kava or a dummy over 16 weeks, and kava came out no better. Those on it had more abnormal liver tests, more shakiness and poorer memory, though none met the criteria for actual liver injury.
Germany withdrew it from sale in 2002 over reports of liver damage, and German courts later overturned the ban. The risk rose with high amounts, long use and mixing it with other medicines or supplements. With that record, this one stays on the shelf.
Licorice root. Often sold for "adrenal fatigue", a condition with nothing solid behind it. Real licorice contains glycyrrhizin, which can push up blood pressure and drain potassium, and the effect is stronger in women, older people and those whose blood pressure already runs high. It has no place in a stress routine.
Valerian. The famous bedtime herb, also known as cat's love because it works on cats much as catnip does, so keep the lid on the jar. For anxiety the evidence barely exists. In the one small comparison available, it matched a dummy pill and went no further. It may still help you drift off, so keep it for bedtime and look elsewhere for the daytime jitters. Natural Remedies for Insomnia, linked below, matches the remedy to the kind of sleepless night.
St John's wort. Not a stress herb, but often bought alongside them for low mood, and it's the one most likely to clash with medicines. Its old country names include devil's scourge and witch's herb, which seems about right for a plant that causes this much trouble. It speeds up the liver's clearing of many drugs, so the contraceptive pill, blood thinners such as warfarin and heart medicines like digoxin can stop working properly, and it has caused breakthrough bleeding in women on the pill. Taken with antidepressants, it has also tipped people into serotonin syndrome, an overload of the brain's mood messenger.
Using herbs wisely
One at a time. Start a single herb and give it a few weeks before you judge it, so you know what is doing what. A stress blend of many herbs makes that impossible, and more can work against you: when 24 volunteers took a lemon balm and valerian mix under stress, the smallest amount eased their anxiety, the largest raised it at one point, and all three amounts lowered their score on a concentration test.
Buy from a brand that tests its products. Herbal supplements vary widely in what's inside. When DNA tests of 5,957 herbal products from 37 countries were pooled, 27 percent failed to match the plant on the label. Loose, recognisable herbs for tea are the easiest way round that, because you can at least see the plant, though clean is another matter. A German team tested 274 teas from Berlin shops, chamomile and lemon balm among them, and found surprisingly high levels of pyrrolizidine alkaloids in some, plant toxins that can damage the liver, most likely from weeds harvested along with the crop. So vary your teas and your brands, and let no single one become everything you drink. With capsules, look for the plant's full name, the part used and a batch or quality mark.
Keep them away from the stove. Store dried herbs in a sealed jar somewhere cool, dark and dry, since heat, light and damp wear them down. A herb that has lost its smell has probably lost much of what you paid for.
Let the making count. Brewing a pot slows you down for a few minutes whatever is in it, and no predator ever stopped to make tea.
Check your medicines. Herbs and prescriptions can interact. If you take anything regularly, from the pill to blood thinners or antidepressants, check before adding a herb. And don't drop a prescribed anxiety medicine or antidepressant to try a herb instead. Stopping can bring withdrawal symptoms, so make any change with a qualified health professional.
Before an operation. Several of these herbs change how surgery goes. Kava and valerian can deepen the sedation from an anaesthetic, St John's wort speeds up the clearing of many drugs used around an operation, ginseng, often mixed into stress blends, can lower blood sugar, and ginkgo, garlic and ginseng can increase bleeding. List every herb and supplement you take on the forms before any operation, even the ones that feel too ordinary to mention.
Pregnancy and breastfeeding. Skip stress supplements altogether unless you've been told a specific one is safe.
When it's more than stress
Sometimes stress turns into something bigger than any herb. Panic attacks, anxiety that stops you working or sleeping for weeks, low mood that hangs on for weeks, or any thought of harming yourself all deserve proper help from a qualified professional, the same way a broken bone does. Reaching out early is a strength. If you ever feel unsafe, call your local emergency number or a crisis line straight away.
A cup of calm
The best herbs for stress are the quiet ones: lemon balm where the third coffee used to be, chamomile every evening, and a lavender capsule for the worry that keeps hanging on. The loud ones, sold with the biggest promises, are the ones whose small print matters most. A life running too hot needs bigger changes, and these herbs can make those changes easier to start.
Start with one this week. Make a proper pot of chamomile or lemon balm tonight, sit down to drink it without your phone, and give it a month before you decide. The next time you sit in the drive with the engine off, there'll be something calmer waiting inside.
Feel like you've been running on alarm for months? Stuck in Survival Mode: What Chronic Stress Does to the Body — what long-term stress does inside you, and how to switch it off.
Is stress keeping you up at night? Natural Remedies for Insomnia: Match the Remedy to the Reason — which remedy fits which kind of sleepless night.
Know someone who lives on coffee by day and wine by night just to get through the week? Send them this. A pot of tea might be a kinder place to start.
Disclaimer: This article is general information. For advice about your own health, talk to a qualified health professional. Herbs can interact with medicines, so check before combining them, and avoid stress supplements in pregnancy and while breastfeeding.
Affiliate Disclosure: This article contains affiliate links. As an Amazon Associate, All For Life earns from qualifying purchases, at no extra cost to you. We only link to products we would recommend without the commission.
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