Quinine Bush

Alstonia constricta

Family: Apocynaceae Evidence: T decoctionextracttincture

Aboriginal antipyretic used for fever, especially malarial fever. Contains alstonine and other indole alkaloids with antimalarial and bitter tonic properties.

Safety Profile

PregnancyUnsafe
BreastfeedingUnsafe
PediatricNot Recommended

Contraindications

Contains toxic alkaloids. Use under expert guidance only.

Interactions

May interact with cardiac medications and antimalarials.

Side Effects

Nausea, vomiting, toxicity at high doses.

Surgery: Discontinue before surgery.
Liver: Alkaloids may affect liver.
Kidney: Insufficient data.
Allergy: Rare.
This information is for educational purposes only. It is not medical advice. Consult a qualified healthcare provider before using any herbal product.