Black locust (Robinia pseudoacacia) is a tree of the origin of the North America, from where it was brought to Europe, its medicinal raw material is acacia flower [Flos Robiniae (Flos Pseudoacaciae)], which contains flavonoid glycosides, sugars, organic acids, essential oils and leuco anthocyanosides, having anti-inflammatory properties ( treatment of inflammation of the kidneys and the urinary tract), antitoxic, anti-edema (if edema resulting from heart failure). Acacia flower is also used as an supportive treatment of rheumatic diseases and hyperacidity (children and adults)