Hyoscyamus niger, commonly known as black henbane, is a herbaceous plant belonging to the nightshade family. It is native to Europe and parts of Asia and is characterized by its large, hairy leaves and bell-shaped yellowish flowers with purple veins. The plant typically grows in disturbed areas and has a strong, unpleasant odor. The leaves and seeds of Hyoscyamus niger contain alkaloids, such as hyoscyamine and scopolamine, which have medicinal properties. Historically, it has been used in traditional medicine for its sedative and antispasmodic effects. However, due to its toxicity, it should be used with caution and under professional guidance.