Deadly nightshade (Atropa belladonna) is a plant that is poisonous to dogs and cats. Atropine, scopolamine, and l-hyoscyamine are toxic alkaloids present in all parts of the plant. However, the toxicity of different parts depend on the part of the plant ingested and the amount ingested. The unripe fruit contains almost all toxic alkalyls. Ripe fruit contains a racemic mixture of atropine and scopolamine, which is approximately half the toxicity of atropine, and the other half is l-hyoscyamine.
What is Deadly nightshade?
Dried, toxic nightshade plants containing belladonna are commonly sold in North America and Europe as “deadly nightshade” or “herb of the devil.” Belladonna is used in herbal medicine as a sedative and sleep aid. The active ingredient is Atropa belladonna. Belladonna can cause heart and stomach problems, including tachycardia, arrhythmia, and vomiting and intestinal cramping. The plant contains solanine, which is potentially fatal to dogs and cats if ingested. If your pet comes into contact with belladonna, please call your veterinarian or the Animal Poison Helpline immediately.