Herbarium of the Ancients — Detailed Record

Ambrosia arborescens

Please 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 considered toxic at high doses or with prolonged use: professional advice is essential before any internal use. Strongly discouraged during pregnancy and breastfeeding, due to traditional abortifacient use reported in certain regions. Keep out of reach of children; do not use in young children. Avoid prolonged internal use without supervision, as interactions and skin sensitization (Asteraceae family) are possible.

Infusion — Dried leaves

Traditional digestive infusion

A few dried leaves are briefly infused in simmering water then strained. This preparation, reserved for occasional use, must be discussed beforehand with a healthcare professional given the potential toxicity of the plant. Dosage must be validated with a healthcare professional or recognized pharmacopoeia before use.

Poultice — Fresh leaves

Poultice for joint pain

Fresh leaves are slightly heated or crushed, then applied directly to the painful area and held in place with a cloth. This external use remains traditional and does not replace medical advice in case of persistent pain. Dosage must be validated with a healthcare professional or recognized pharmacopoeia before use.

Decoction — Leaves and stems

Decoction for external wash

Leaves and stems are boiled for a few minutes in water, then the cooled liquid is used as a wash on the skin. Cautious use limited to external application is recommended, due to insufficient documentation on safe internal use. Dosage must be validated with a healthcare professional or recognized pharmacopoeia before use.

Where to find it

Obtaining the plant

Ambrosia arborescens is found in the wild on the Andean slopes of South America, notably in Ecuador, Peru, and Bolivia; it is rarely sold in European herbalist shops.

Harvest season

When to harvest it

Leaves are traditionally harvested during the dry season, before flowering, when their aromatic content is most pronounced.

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