What is Speedwell?
Speedwell (Veronica officinalis) is a small, low-growing wild plant from European heaths, meadows and open woods. The dried leaves and flowering tops are brewed as a mild tea. In European folk practice it was taken mainly for coughs, for catarrh (thick mucus in the nose and chest), and as a general spring tonic.
It was once so popular as a daily drink in France and Germany that it was nicknamed "European tea". People also used cooled speedwell tea as a wash for itchy skin and minor scrapes, and drank it for sluggish digestion and aching joints.
Here is the honest verdict. Speedwell has a long and well-documented place in Western herbal tradition, but almost no modern human research. Traditional use tells you what people did for centuries; it does not prove the plant works, and that gap applies to every use listed on this page.
How does Speedwell work?
Nobody has shown how speedwell works in people, and the explanations below are proposals rather than proven mechanisms.
Laboratory work suggests two plausible ideas. The iridoid glycosides in the plant, mainly catalpol and aucubin, calm inflammation (swelling and irritation) in cell and animal models. The flavonoids and phenolic acids act as antioxidants, meaning they mop up reactive molecules in a test tube.
Speedwell also contains tannins, the same astringent compounds that make strong black tea taste drying. Tannins tighten surface tissue on contact, which is the usual explanation for why a cooled tea was used as a gargle or a skin wash. None of this has been confirmed in a human trial.
What forms does Speedwell come in?
Speedwell is sold in a few simple forms:
Dried loose herb, the traditional form, brewed as an infusion (a tea made by steeping in hot water).
Tea bags, often blended with other cough herbs such as thyme, mullein or plantain.
Liquid tincture, an alcohol extract taken by the drop or in water.
Cooled tea used externally as a skin wash or compress.
Capsules and tablets are uncommon. Speedwell is far more often a minor ingredient in a blend than a stand-alone product, so check the label to see how much is actually in the mix.
Where it comes from:
Speedwell has been used in European folk medicine since at least the Middle Ages. It appears in German and French herbals of the 16th and 17th centuries as a remedy for coughs, chest complaints and skin problems.
In 18th-century France and Germany it became a fashionable everyday drink called the d'Europe, or European tea, and was exported as a substitute for imported tea. Its popularity faded in the 1800s. It survives today mostly in traditional cough teas and country remedies, and it has never been a major herb in Asian or Middle Eastern systems.
Who should avoid Speedwell?
- Do not use if you are pregnant or breastfeeding, because the safety of speedwell in pregnancy and in milk has never been studied.
- Do not use if you are allergic to speedwell or to other plants in the plantain family, such as ribwort plantain.
- Do not use if you are giving it to a child under 12 without a doctor's advice, as no dose has been tested in children.
- Do not use if you have liver disease or are taking a medicine that needs liver blood tests, unless your doctor agrees, since the herb is unstudied in this situation.
- Do not use if you take iron tablets for anaemia (low red blood cells) at the same time of day, because the tea can block iron absorption.
- Do not use if you are relying on it in place of prescribed treatment for asthma, a chest infection, or gout (a painful joint condition caused by uric acid crystals).
When should you see a doctor?
See a doctor if a cough lasts more than three weeks, brings up blood, or comes with a fever, chest pain or breathlessness.
See a doctor promptly if a rash spreads, weeps or blisters, or if a sore throat makes it hard to swallow or breathe.
Stop the herb and get urgent help if you develop swelling of the lips, face or tongue, a widespread rash, or trouble breathing, which can mean an allergic reaction.
Tell your doctor or pharmacist you are taking speedwell if you also take diabetes medicine, lithium, water tablets or iron, so they can watch for problems.
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