Oleander is admired for its vibrant flowers and lush green foliage. However, every part of the plant—leaves, flowers, stems, and even nectar—contains highly toxic compounds. Awareness of its dangers is essential to safely enjoy its ornamental beauty.

Why Oleander Is Dangerous

Toxic Compounds in Oleander:

Oleandrin & Neriine – Cardiac glycosides that disrupt heart rhythm and can cause fatal arrhythmias.

Digitoxigenin & Thevetin – Interfere with the sodium-potassium balance in cells, leading to severe toxicity.

Saponins – Irritate the digestive system, contributing to nausea and vomiting.

Key point: Even chewing a single leaf can cause serious poisoning in humans and animals.

Symptoms of Oleander Poisoning

Ingesting oleander can lead to life-threatening reactions:

Severe nausea and vomiting

Diarrhea (sometimes bloody)

Dizziness and confusion

Irregular heartbeat (arrhythmias)

Low blood pressure (hypotension)

Tremors and seizures

Coma or death in severe cases

Emergency tip: Seek immediate medical attention if poisoning is suspected.

How Oleander Poses a Risk