Historically, Goldenrod has been used on the skin to heal wounds. It has also been used as a diuretic, meaning it helps the body get rid of excess fluid.
Goldenrod has also been used to treat tuberculosis, diabetes, enlargement of the liver, gout, hemorrhoids, internal bleeding, asthma, and arthritis. In folk medicine, it is used as a mouth rinse to treat inflammation of the mouth and throat. It may also reduce inflammation, however, this has not been thoroughly studied in humans.
Information courtesy of Mount Sinai Hospital