Galega officinalis, commonly known as galega, goat’s-rue, French lilac, Italian fitch, or professor-weed,is an herbaceous plant in the Faboideae subfamily. It is native to the Middle East but has been naturalized in Europe and western Asia. The plant has been extensively cultivated as a forage crop, an ornamental, a bee plant, and as green manure.G. officinalis is rich in guanidine, a substance with blood glucose-lowering activity at the foundation for discovering metformin, a treatment for managing symptoms of diabetes mellitus. In ancient herbalism, goat’s-rue was used as a diuretic. It can be poisonous to mammals, but is a food for various insects.