- Galega officinalis, commonly known as goat's rue, French lilac, Italian fitch, or professor-weed, is a bitter and strong-smelling herb that grows in the Middle East, southern Europe, and western Asia.
- Although now considered a weed, goat's rue was introduced into the United States in 1891 as forage for livestock.
- Goat's rue has been traditionally used to increase breast milk production and treat diabetes. Goat's rue may also help control blood sugar and promote weight loss.
- Although not well studied in humans, goat's rue may interact with medicines taken to reduce blood sugar or reduce the risk of bleeding.
- Galegine, a Galega extract, led to the development of the only approved biguanide antidiabetic drug, metformin.