Herbier des Anciens — Detailed RecordFR · EN
sweet chestnut
Castanea sativa
Read before use: the information below describes traditional and informational uses — it does not replace the advice of a healthcare professional. In case of doubt, pregnancy, breastfeeding, ongoing treatment, or use in children, seek advice before use.
The tannins present in significant quantities may irritate an already sensitive stomach if the infusion is too concentrated or taken repeatedly on an empty stomach. Not recommended for prolonged use without advice, particularly in pregnant or breastfeeding women, as a precautionary measure in the absence of sufficient data. Do not confuse the leaves or fruits with those of horse chestnut (Aesculus hippocastanum), which is not edible and differs in use. In case of ongoing medication or chronic digestive disorders, consult a healthcare professional before any regular use.
Infusion — Dried leaves
Chestnut leaf infusion
Pour simmering water over the dried leaves and let steep for about ten minutes covered, then strain. Drink warm, optionally sweetened with a little honey. One to two teaspoons of dried leaves per cup, up to two cups per day.
Decoction — Dried leaves
Decoction for gargling
Gently boil the leaves for a few minutes in water, let cool then strain before use as a gargle or mouthwash. Do not swallow in large quantities. Dosage should be validated with a healthcare professional or recognized pharmacopoeia before use.
Where to find it
Obtaining the plant
Dried chestnut leaf can be found in herbalist shops or specialty fine food stores offering herbal teas; the tree grows spontaneously in many forests and hedgerows of western and southern Europe.
Harvest season
When to harvest it
The leaves are traditionally harvested in spring or early summer, before they harden, and are dried in the shade.
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