Educational information, not medical advice — ask your doctor or midwife.
African birch chewing stick is a trimmed twig or root of the tree Anogeissus leiocarpus. In Hausa the tree is called marke. You chew one end until it frays, then rub the frayed tip over your teeth.
It is used as a toothbrush across the West African savannah. The wood is bitter and high in tannins. Some people also boil the bark and drink the brew for stomach, skin or fever complaints.
Here is the honest verdict. Lab tests show the wood slows mouth bacteria. Human trials are few and small, so a dental benefit is not proven.
Long use in a tradition is not proof that something works. It is also not proof that it is safe. Both still have to be tested.
Most of the effect is probably plain scrubbing. The frayed fibres act like bristles and wipe plaque off teeth. Any brush-like tool does that.
In test-tube studies, wood and bark extracts slow common mouth bacteria. These include species linked to decay and gum disease. Whether the same thing happens in a living mouth is not established.
In laboratory work the tannins bind proteins and may block bacterial enzymes. Animal studies suggest extracts calm swelling. None of this proves a gum or tooth effect in people.
Chewing also makes you produce more saliva. Saliva helps wash the mouth and buffer acid. That part is well accepted, and it is true of chewing in general.
The usual form is a fresh twig or slim root, about pencil thick. Markets across the Sahel sell them in bundles.
Forms you may meet: - Fresh chewing sticks, sold loose or in bundles - Dried sticks, sometimes wrapped for export - Bark or stem brews made with boiled water - Powdered bark used as a tooth powder - Bark extracts in some local toothpastes and research products
The stick and the bark brew are not the same thing. Chewing is a surface use in the mouth. Drinking a brew puts the plant chemistry through your whole body.
That difference matters for safety. Internal use has had far less study. Treat the two uses separately.
The tree is a well known savannah species, often called African birch. Herders and farmers across Nigeria, Niger, Mali, Burkina Faso and Senegal used the twigs to clean teeth.
Healers also used the bark widely. Recorded uses included wound washes, worm remedies, fever brews and skin complaints. The wood and bark were also used for dye and for tanning hides.
Ethnobotanical surveys from the twentieth century list marke again and again. That record shows the plant mattered to people. It does not show the remedies worked, and it is not a reason to treat yourself.
Stop and see a dentist if your gums bleed for more than a week, pull back from the teeth, or hurt when you chew.
Get urgent dental or medical care for face or jaw swelling, fever with tooth pain, or a tooth you cannot bite on.
Stop bark brews and see a doctor for vomiting, lasting belly pain, dark urine or yellow eyes or skin.
Call emergency services for swelling of the lips, tongue or throat, or trouble breathing after any use.
In the UK, the EU and the US it is not a licensed medicine. Sticks are sold as ordinary plant goods or oral hygiene items, and no health claim is approved. In parts of West Africa they are everyday market goods.
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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