Herbarium of the Ancients — Detailed RecordFR · EN

Alstonia constricta

Alstonia constricta
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.
Enhanced precautions for this plant: Plant containing active alkaloids (notably alstonine and reserpine-like compounds): never exceed the very low traditional doses, and seek the advice of a healthcare professional before any use. Not recommended during pregnancy and breastfeeding due to lack of safety data and the presence of potent alkaloids. Not suitable for children. Risk of interactions with cardiovascular or psychotropic medications; avoid if on medical treatment without prior medical advice.
Decoction — Bark

Traditional bitter decoction

The dried and crushed bark was gently boiled in water for about fifteen minutes, then filtered. This bitter preparation was traditionally taken in small sips, between meals. Dosage must be validated with a healthcare professional or recognized pharmacopoeia before use.

Tincture — Bark

Bark tincture

The bark was macerated in alcohol for several weeks to extract the bitter and alkaloid principles. Traditionally used in very small quantities, diluted in a little water, under the supervision of an experienced practitioner. Dosage must be validated with a healthcare professional or recognized pharmacopoeia before use.

Where to find it

Sourcing the plant

This bark is rarely found in European commerce; it comes primarily from Australia, where it grows wild in the arid regions of Queensland and New South Wales. Some herbalists specializing in rare or exotic plants may offer it in dried form.

Harvest season

When to harvest it

The bark is traditionally harvested from branches or the trunk at the end of the dry season, a period when its concentration of active principles was considered optimal by harvesters.

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