Educational information, not medical advice — ask your doctor or midwife.
Ratania is the dried root of Krameria lappacea, a low shrub of the dry Andes. It is also sold as rhatany or Peruvian rhatany. It is used most often as a mouth rinse or gargle for sore, puffy gums.
The root is very rich in tannins. Tannins are plant compounds that bind to protein and make soft tissue draw tight. That drawing-tight effect is called astringency, and it is why the root tastes harsh and dry.
Here is the honest verdict on the evidence. Good human trials are almost absent, so we cannot say it treats any condition. Its standing rests on long use and on known root chemistry, not on proof.
Traditional use is not proof that a remedy works, and it is not proof that it is safe. That point applies to everything on this page and is not repeated below.
The proposed action is simple chemistry rather than a drug effect. Tannins bind proteins in the surface layer of the gum or throat. In test-tube work this forms a thin, tight film that may shield raw tissue.
That film is also thought to cut weeping and small-vessel oozing. The idea is plausible and matches how the root feels in the mouth. Whether it speeds healing of gum disease in people has not been shown.
Lab studies have looked at other parts of the root too. Benzofuran compounds from ratania have lowered markers of swelling in cell and animal tests. In lab dishes, extracts also slow the growth of some mouth bacteria.
None of that has been tracked through to a measured result in human mouths. Treat the mechanism as a reasonable idea, not as a settled fact.
Common forms include:
- Cut or powdered root, simmered in water to make a rinse - Alcohol tincture, usually diluted in water before use - Ready-made mouthwashes and gargles - Toothpastes and gum paints in some European brands - Throat lozenges that list rhatany among the herbs - Capsules, which are far less common
Mouth and throat products are by far the main use. Products vary a lot in strength, so two bottles are rarely alike.
Andean peoples used the root long before European contact, mainly to firm up gums and clean teeth. Spanish accounts from Peru in the 1700s describe women chewing the root for this purpose.
The botanist Hipólito Ruiz brought samples to Europe in that era. Rhatany then entered European pharmacies and appeared in many pharmacopoeias through the 1800s. It was listed there as an astringent for the mouth, gut and skin.
German herbal authorities later kept a monograph for mild inflammation of the mouth and throat lining. That listing rests largely on long use and root chemistry.
Nearly all root is still dug from wild plants in Peru and Bolivia. Harvest pressure has raised real conservation concern about the species.
Stop and get urgent help if your lips, tongue or throat swell, or if you struggle to breathe. That can be a severe allergic reaction.
Stop and see a dentist or doctor if:
- A mouth sore lasts more than two weeks - Your gums bleed often or look pulled back from the teeth - You have face swelling, fever or tooth pain - A sore throat worsens or makes swallowing hard - Diarrhoea lasts over two days, or has blood in it
Tell your dentist you are using it before any dental work.
In the European Union and the United Kingdom, ratania is sold as a traditional herbal product or as a cosmetic and toothpaste ingredient. German herbal authorities hold a monograph for mild mouth and throat inflammation.
In the United States it is sold as a dietary supplement, and the FDA has not approved it to treat anything. Nearly all root is wild-dug, and harvest pressure in Peru has raised conservation concern, so supply rules vary by country.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
What it is typically used for, usual dose, cautions, and the study behind it where real trial data exists.
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