The name henbane dates at least to AD 1265. The origins of the word are unclear, but "hen" probably originally meant death rather than referring to chickens.[9] Hyoscyamine, scopolamine, and other tropane alkaloids have been found in the foliage and seeds of the plant.[1] Common effects of henbane ingestion in humans include hallucinations,[1] dilated pupils, restlessness, and flushed skin. Less common symptoms, such as tachycardia, convulsions, vomiting, hypertension, hyperpyrexia, and ataxia, have all been noted.