Hyoscyamus niger is toxic to horses. The reported severity is severe. Also known as Black Henbane.
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Ireland has no animal poison service for owners. Call your veterinarian. An Irish veterinarian can consult the Veterinary Poisons Information Service in the United Kingdom.
Giftinformationscentralen stopped answering questions about animals on 1 July 2018. Call your veterinarian or an animal hospital.
Drooling Bloat Colic Diarrhea Dilated Pupils Seizures High Heart Rate Weakness
The color of each symptom follows the severity scale above.
Henbane is a poisonous plant belonging to tribe Hyoscyameae of the nightshade family Solanaceae. Henbane is native to temperate Europe and Siberia, and naturalised in Great Britain and Ireland.
Henbane leaves and herbage without roots are chopped and dried and are then used for medicinal purposes or in incense and smoking blends, in making beer and tea, and in seasoning wine. Henbane leaves are boiled in oil to derive henbane oil. Henbane seeds are an ingredient in incense blends. In all preparations, the dosage has to be carefully estimated as henbane is highly toxic. For some therapeutic applications, dosages like 0.5 g and 1.5–3 g were used. The lethal dosage is not known. Henbane is toxic to cattle, wild animals, fish, and birds. Not all animals are susceptible; for example, the larvae of some Lepidoptera species, including cabbage moths, eat henbane. Pigs are immune to henbane toxicity and are reported to enjoy the effects of the plant.
Also recorded as Common Henbane, Henbane, Hog's-bean and Stinking Nightshade.
More from the Solanaceae family:
Countries with the most wild observations, from GBIF data.