Overview

Oleander (Nerium oleander) is one of the most toxic ornamental plants in the world. Every part of the oleander plant - flowers, leaves, stems, roots, and even the smoke from burning oleander - contains cardiac glycosides that interfere with the heart's electrical system. Oleander poisoning in dogs and cats can cause fatal heart arrhythmias. Even small ingestions are dangerous. Oleander is widely planted as a landscaping shrub in warmer climates because it is drought-resistant and evergreen. Dogs and cats may chew on fallen leaves or branches, and the plant remains toxic even when dried. Pets that have ingested any part of an oleander plant need immediate veterinary emergency care.

Symptoms

Drooling, abdominal pain, heart arrhythmias, collapse

Typical onset

1-6 hours

What to do

Seek emergency care immediately. All parts contain cardiac glycosides.