This plant is common to Europe, growing among ruins and in waste places, blossoming from May to August, and maturing its berries in September. It is also found as far east as Central Asia. It is often found growing in woodlands, and especially in the woods of high elevations, as of mountains. It is cultivated to some extent in this country, in France, and in Britain. The whole plant possesses poisonous properties.Medical Uses and Dosage. Therapeutically employed belladonna exerts precisely opposite effects from those of its toxic doses. Large doses paralyze, small doses stimulate, the nervous system. Belladonna, as chiefly used in our school, is selected in conditions in which there is impairment of the capillary circulation in any part of the body, with congestion.