Poisoning horse chestnut

Horse chestnut seeds are considered inedible and poisonous. The bitter flavor prevents consumption of large amounts. The leaves, flowers, young sprouts, and seeds are toxic. Symptoms of poisoning include nervous muscle twitching, weakness, dilated pupils, vomiting, diarrhea, depression, paralysis, and stupor (HARDIN AND arena). Incidents of anaphylactic shock after i.v. injections of horse chestnut have been reported, along with renal toxicity or failure (frohne and pfander). Horse chestnut pollens are also a common cause of aller-gic condition in urban children. 

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