Botanical atlas

Quinine Tree

Rauvolfia caffra

Across much of tropical and southern Africa, the bitter bark of the quinine tree was steeped into decoctions by traditional healers and used to bring down fevers, ease stomach complaints, and treat malaria long before modern antimalarials existed, which is how it earned its common name even though it is unrelated to true quinine from the cinchona tree. The tree's genus, Rauvolfia, is famous in pharmacology for its potent alkaloids, the same chemical family that gave the world reserpine, one of the earliest drugs used to treat high blood pressure. That very potency is why the bark and root were handled with great caution by those who knew the plant well, measured out carefully rather than brewed casually. Today the tree is better known and loved as a magnificent shade and riverine species than as a home remedy.

Safety.

Rauvolfia caffra is not a plant for home remedies. Its bark, roots, and latex contain potent indole alkaloids, related to reserpine, that can cause dangerously low blood pressure, heavy sedation, severe depression, fainting, and other serious effects if ingested in uncontrolled amounts, and in some regions parts of the plant have historically been used as arrow or fish poison. It should never be self-prescribed, especially during pregnancy or breastfeeding, and it can interact seriously with blood pressure medications, antidepressants, sedatives, and other prescription drugs. Keep it away from children and pets, and treat this tree as a garden and ecological asset rather than a kitchen or medicine cabinet ingredient. Anyone drawn to its traditional medicinal history should speak with a qualified healthcare professional or a trained ethnobotanist rather than experiment on their own.